{"id":68068,"date":"2026-01-29T16:42:22","date_gmt":"2026-01-29T08:42:22","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/68068.html"},"modified":"2026-01-29T16:42:22","modified_gmt":"2026-01-29T08:42:22","slug":"%e9%b8%bf%e8%92%99app%e5%bc%80%e5%8f%91%e4%bb%8e%e5%85%a5%e9%97%a8%e5%88%b0%e7%b2%be%e9%80%9a%ef%bc%9a%e7%bd%91%e7%bb%9c%e8%af%b7%e6%b1%82%e4%b8%8e%e6%95%b0%e6%8d%ae%e6%8c%81%e4%b9%85%e5%8c%96","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/68068.html","title":{"rendered":"\u9e3f\u8499APP\u5f00\u53d1\u4ece\u5165\u95e8\u5230\u7cbe\u901a\uff1a\u7f51\u7edc\u8bf7\u6c42\u4e0e\u6570\u636e\u6301\u4e45\u5316"},"content":{"rendered":"<h2>\u300a\u9e3f\u8499APP\u5f00\u53d1\u4ece\u5165\u95e8\u5230\u7cbe\u901a\u300b\u7b2c4\u7bc7&#xff1a;\u7f51\u7edc\u8bf7\u6c42\u4e0e\u6570\u636e\u6301\u4e45\u5316 &#x1f5c4;\ufe0f<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260129084220-697b1d6cdad4b.png\" 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string-property property\">&#034;module&#034;<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token string-property property\">&#034;requestPermissions&#034;<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n      <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token string-property property\">&#034;name&#034;<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">&#034;ohos.permission.INTERNET&#034;<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n      <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token string-property property\">&#034;name&#034;<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">&#034;ohos.permission.READ_NETWORK_STATE&#034;<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n      <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token string-property property\">&#034;name&#034;<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">&#034;ohos.permission.WRITE_NETWORK_STATE&#034;<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">]<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h5>2. \u7f51\u7edc\u8bf7\u6c42\u5de5\u5177\u7c7b<\/h5>\n<p>\u2328\ufe0f entry\/src\/main\/ets\/utils\/HttpUtils.ets<\/p>\n<p><span class=\"token keyword\">import<\/span> http <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;&#064;ohos.net.http&#039;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u7f51\u7edc\u8bf7\u6c42\u914d\u7f6e<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token constant\">HTTP_CONFIG<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  baseUrl<span class=\"token operator\">:<\/span> <span class=\"token string\">&#039;https:\/\/api.example.com&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token comment\">\/\/ \u66ff\u6362\u4e3a\u4f60\u7684API\u5730\u5740<\/span><br \/>\n  timeout<span class=\"token operator\">:<\/span> <span class=\"token number\">10000<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token comment\">\/\/ \u8d85\u65f6\u65f6\u95f4&#xff08;\u6beb\u79d2&#xff09;<\/span><br \/>\n  retryCount<span class=\"token operator\">:<\/span> <span class=\"token number\">3<\/span> <span class=\"token comment\">\/\/ \u91cd\u8bd5\u6b21\u6570<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u7f51\u7edc\u8bf7\u6c42\u5de5\u5177\u7c7b<\/span><br \/>\n<span class=\"token keyword\">export<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">HttpUtils<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">static<\/span> instance<span class=\"token operator\">:<\/span> HttpUtils <span class=\"token operator\">|<\/span> <span class=\"token keyword\">null<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token keyword\">private<\/span> httpRequest<span class=\"token operator\">:<\/span> http<span class=\"token punctuation\">.<\/span>HttpRequest <span class=\"token operator\">|<\/span> <span class=\"token keyword\">null<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u5355\u4f8b\u6a21\u5f0f<\/span><br \/>\n  <span class=\"token keyword\">static<\/span> <span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> HttpUtils <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>HttpUtils<span class=\"token punctuation\">.<\/span>instance<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      HttpUtils<span class=\"token punctuation\">.<\/span>instance <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">HttpUtils<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> HttpUtils<span class=\"token punctuation\">.<\/span>instance<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u521d\u59cb\u5316HTTP\u8bf7\u6c42<\/span><br \/>\n  <span class=\"token keyword\">private<\/span> <span class=\"token function\">initRequest<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>httpRequest<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>httpRequest <span class=\"token operator\">&#061;<\/span> http<span class=\"token punctuation\">.<\/span><span class=\"token function\">createHttp<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u53d1\u9001GET\u8bf7\u6c42<\/span><br \/>\n  <span class=\"token keyword\">async<\/span> <span class=\"token generic-function\"><span class=\"token function\">get<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span><span class=\"token constant\">T<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span>url<span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span><span class=\"token punctuation\">,<\/span> params<span class=\"token operator\">?<\/span><span class=\"token operator\">:<\/span> Record<span class=\"token operator\">&lt;<\/span><span class=\"token builtin\">string<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">any<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token constant\">T<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">initRequest<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> fullUrl <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">buildUrl<\/span><span class=\"token punctuation\">(<\/span>url<span class=\"token punctuation\">,<\/span> params<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> response <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>httpRequest<span class=\"token operator\">!<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">request<\/span><span class=\"token punctuation\">(<\/span>fullUrl<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      method<span class=\"token operator\">:<\/span> http<span class=\"token punctuation\">.<\/span>RequestMethod<span class=\"token punctuation\">.<\/span><span class=\"token constant\">GET<\/span><span class=\"token punctuation\">,<\/span><br \/>\n      header<span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token string-property property\">&#039;Content-Type&#039;<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">&#039;application\/json&#039;<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n      connectTimeout<span class=\"token operator\">:<\/span> <span class=\"token constant\">HTTP_CONFIG<\/span><span class=\"token punctuation\">.<\/span>timeout<span class=\"token punctuation\">,<\/span><br \/>\n      readTimeout<span class=\"token operator\">:<\/span> <span class=\"token constant\">HTTP_CONFIG<\/span><span class=\"token punctuation\">.<\/span>timeout<br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token generic-function\"><span class=\"token function\">handleResponse<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span><span class=\"token constant\">T<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span>response<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u53d1\u9001POST\u8bf7\u6c42<\/span><br \/>\n  <span class=\"token keyword\">async<\/span> <span class=\"token generic-function\"><span class=\"token function\">post<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span><span class=\"token constant\">T<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span>url<span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span><span class=\"token punctuation\">,<\/span> data<span class=\"token operator\">?<\/span><span class=\"token operator\">:<\/span> Record<span class=\"token operator\">&lt;<\/span><span class=\"token builtin\">string<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">any<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token constant\">T<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">initRequest<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> fullUrl <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">buildUrl<\/span><span class=\"token punctuation\">(<\/span>url<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> response <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>httpRequest<span class=\"token operator\">!<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">request<\/span><span class=\"token punctuation\">(<\/span>fullUrl<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      method<span class=\"token operator\">:<\/span> http<span class=\"token punctuation\">.<\/span>RequestMethod<span class=\"token punctuation\">.<\/span><span class=\"token constant\">POST<\/span><span class=\"token punctuation\">,<\/span><br \/>\n      header<span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token string-property property\">&#039;Content-Type&#039;<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">&#039;application\/json&#039;<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n      extraData<span class=\"token operator\">:<\/span> data<span class=\"token punctuation\">,<\/span><br \/>\n      connectTimeout<span class=\"token operator\">:<\/span> <span class=\"token constant\">HTTP_CONFIG<\/span><span class=\"token punctuation\">.<\/span>timeout<span class=\"token punctuation\">,<\/span><br \/>\n      readTimeout<span class=\"token operator\">:<\/span> <span class=\"token constant\">HTTP_CONFIG<\/span><span class=\"token punctuation\">.<\/span>timeout<br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token generic-function\"><span class=\"token function\">handleResponse<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span><span class=\"token constant\">T<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span>response<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u6784\u5efa\u5b8c\u6574URL<\/span><br \/>\n  <span class=\"token keyword\">private<\/span> <span class=\"token function\">buildUrl<\/span><span class=\"token punctuation\">(<\/span>url<span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span><span class=\"token punctuation\">,<\/span> params<span class=\"token operator\">?<\/span><span class=\"token operator\">:<\/span> Record<span class=\"token operator\">&lt;<\/span><span class=\"token builtin\">string<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">any<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> fullUrl <span class=\"token operator\">&#061;<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">&#096;<\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span><span class=\"token constant\">HTTP_CONFIG<\/span><span class=\"token punctuation\">.<\/span>baseUrl<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>url<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">&#096;<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>params<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">const<\/span> queryString <span class=\"token operator\">&#061;<\/span> Object<span class=\"token punctuation\">.<\/span><span class=\"token function\">keys<\/span><span class=\"token punctuation\">(<\/span>params<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">map<\/span><span class=\"token punctuation\">(<\/span>key <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">&#096;<\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>key<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\">&#061;<\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span><span class=\"token function\">encodeURIComponent<\/span><span class=\"token punctuation\">(<\/span>params<span class=\"token punctuation\">[<\/span>key<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">&#096;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">join<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;&amp;&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      fullUrl <span class=\"token operator\">&#043;&#061;<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">&#096;<\/span><span class=\"token string\">?<\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>queryString<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">&#096;<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> fullUrl<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u5904\u7406\u54cd\u5e94<\/span><br \/>\n  <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token generic-function\"><span class=\"token function\">handleResponse<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span><span class=\"token constant\">T<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span>response<span class=\"token operator\">:<\/span> http<span class=\"token punctuation\">.<\/span>HttpResponse<span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token constant\">T<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>response<span class=\"token punctuation\">.<\/span>responseCode <span class=\"token operator\">&#061;&#061;&#061;<\/span> <span class=\"token number\">200<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">const<\/span> result <span class=\"token operator\">&#061;<\/span> <span class=\"token constant\">JSON<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">parse<\/span><span class=\"token punctuation\">(<\/span>response<span class=\"token punctuation\">.<\/span>result<span class=\"token punctuation\">.<\/span><span class=\"token function\">toString<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>result<span class=\"token punctuation\">.<\/span>code <span class=\"token operator\">&#061;&#061;&#061;<\/span> <span class=\"token number\">200<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> result<span class=\"token punctuation\">.<\/span>data<span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">throw<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Error<\/span><span class=\"token punctuation\">(<\/span>result<span class=\"token punctuation\">.<\/span>message <span class=\"token operator\">||<\/span> <span class=\"token string\">&#039;\u8bf7\u6c42\u5931\u8d25&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">throw<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Error<\/span><span class=\"token punctuation\">(<\/span><span class=\"token template-string\"><span class=\"token template-punctuation string\">&#096;<\/span><span class=\"token string\">HTTP\u9519\u8bef&#xff1a;<\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>response<span class=\"token punctuation\">.<\/span>responseCode<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">&#096;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<hr \/>\n<h3>\u4e8c\u3001 \u7f51\u7edc\u8bf7\u6c42\u5b9e\u6218 &#x1f6e0;\ufe0f<\/h3>\n<h4>2.1 \u5b9e\u6218\u76ee\u6807<\/h4>\n<p>\u57fa\u4e8e\u7b2c3\u7bc7\u7684\u300cMyFirstHarmonyApp\u300d\u9879\u76ee\u67b6\u6784&#xff0c;\u5b9e\u73b0\u4ee5\u4e0b\u529f\u80fd&#xff1a;<\/p>\n<ul>\n<li>\u5546\u54c1\u5217\u8868\u7f51\u7edc\u8bf7\u6c42&#xff1a;\u4ece\u771f\u5b9eAPI\u83b7\u53d6\u5546\u54c1\u6570\u636e&#xff0c;\u66ff\u6362\u6a21\u62df\u6570\u636e&#xff1b;<\/li>\n<li>\u7528\u6237\u4fe1\u606f\u7f51\u7edc\u8bf7\u6c42&#xff1a;\u5b9e\u73b0\u7528\u6237\u767b\u5f55\u3001\u6ce8\u518c\u3001\u4e2a\u4eba\u4fe1\u606f\u67e5\u8be2&#xff1b;<\/li>\n<li>\u7f51\u7edc\u8bf7\u6c42\u62e6\u622a\u5668&#xff1a;\u5b9e\u73b0\u8bf7\u6c42\u62e6\u622a\u4e0e\u54cd\u5e94\u62e6\u622a&#xff1b;<\/li>\n<li>\u7f51\u7edc\u72b6\u6001\u68c0\u6d4b&#xff1a;\u68c0\u6d4b\u7f51\u7edc\u8fde\u63a5\u72b6\u6001&#xff0c;\u4f18\u5316\u7528\u6237\u4f53\u9a8c\u3002<\/li>\n<\/ul>\n<hr \/>\n<h4>2.2 &#x1f527; \u4e1a\u52a1\u670d\u52a1\u5b9e\u73b0<\/h4>\n<h5>1. \u5546\u54c1\u670d\u52a1<\/h5>\n<p>\u2328\ufe0f entry\/src\/main\/ets\/services\/ProductService.ets<\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> HttpUtils <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;..\/utils\/HttpUtils&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> GoodsModel <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;..\/models\/HomeModel&#039;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u5546\u54c1API\u54cd\u5e94\u6570\u636e\u6a21\u578b<\/span><br \/>\n<span class=\"token keyword\">export<\/span> <span class=\"token keyword\">interface<\/span> <span class=\"token class-name\">ProductResponseModel<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  code<span class=\"token operator\">:<\/span> <span class=\"token builtin\">number<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  message<span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  data<span class=\"token operator\">:<\/span> <span class=\"token builtin\">Array<\/span><span class=\"token operator\">&lt;<\/span>GoodsModel<span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u5546\u54c1\u670d\u52a1<\/span><br \/>\n<span class=\"token keyword\">export<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ProductService<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">static<\/span> instance<span class=\"token operator\">:<\/span> ProductService <span class=\"token operator\">|<\/span> <span class=\"token keyword\">null<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u5355\u4f8b\u6a21\u5f0f<\/span><br \/>\n  <span class=\"token keyword\">static<\/span> <span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> ProductService <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>ProductService<span class=\"token punctuation\">.<\/span>instance<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      ProductService<span class=\"token punctuation\">.<\/span>instance <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ProductService<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> ProductService<span class=\"token punctuation\">.<\/span>instance<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u83b7\u53d6\u5546\u54c1\u5217\u8868<\/span><br \/>\n  <span class=\"token keyword\">async<\/span> <span class=\"token function\">getProductList<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token builtin\">Array<\/span><span class=\"token operator\">&lt;<\/span>GoodsModel<span class=\"token operator\">&gt;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> response <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> HttpUtils<span class=\"token punctuation\">.<\/span><span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token generic-function\"><span class=\"token function\">get<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span><span class=\"token builtin\">Array<\/span><span class=\"token operator\">&lt;<\/span>GoodsModel<span class=\"token operator\">&gt;&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\/api\/products&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> response<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u83b7\u53d6\u5546\u54c1\u8be6\u60c5<\/span><br \/>\n  <span class=\"token keyword\">async<\/span> <span class=\"token function\">getProductDetail<\/span><span class=\"token punctuation\">(<\/span>id<span class=\"token operator\">:<\/span> <span class=\"token builtin\">number<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span>GoodsModel<span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> response <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> HttpUtils<span class=\"token punctuation\">.<\/span><span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token generic-function\"><span class=\"token function\">get<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span>GoodsModel<span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token template-string\"><span class=\"token template-punctuation string\">&#096;<\/span><span class=\"token string\">\/api\/products\/<\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>id<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">&#096;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> response<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h5>2. \u7528\u6237\u670d\u52a1<\/h5>\n<p>\u2328\ufe0f entry\/src\/main\/ets\/services\/UserService.ets<\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> HttpUtils <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;..\/utils\/HttpUtils&#039;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u7528\u6237\u767b\u5f55\u8bf7\u6c42\u6570\u636e\u6a21\u578b<\/span><br \/>\n<span class=\"token keyword\">export<\/span> <span class=\"token keyword\">interface<\/span> <span class=\"token class-name\">LoginRequestModel<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  username<span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  password<span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u7528\u6237\u767b\u5f55\u54cd\u5e94\u6570\u636e\u6a21\u578b<\/span><br \/>\n<span class=\"token keyword\">export<\/span> <span class=\"token keyword\">interface<\/span> <span class=\"token class-name\">LoginResponseModel<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  code<span class=\"token operator\">:<\/span> <span class=\"token builtin\">number<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  message<span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  data<span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    token<span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    userInfo<span class=\"token operator\">:<\/span> UserInfoModel<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u7528\u6237\u4fe1\u606f\u6570\u636e\u6a21\u578b<\/span><br \/>\n<span class=\"token keyword\">export<\/span> <span class=\"token keyword\">interface<\/span> <span class=\"token class-name\">UserInfoModel<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  id<span class=\"token operator\">:<\/span> <span class=\"token builtin\">number<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  username<span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  avatar<span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  nickname<span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  email<span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  phone<span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  gender<span class=\"token operator\">:<\/span> <span class=\"token builtin\">number<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  birthday<span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u7528\u6237\u670d\u52a1<\/span><br \/>\n<span class=\"token keyword\">export<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">UserService<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">static<\/span> instance<span class=\"token operator\">:<\/span> UserService <span class=\"token operator\">|<\/span> <span class=\"token keyword\">null<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u5355\u4f8b\u6a21\u5f0f<\/span><br \/>\n  <span class=\"token keyword\">static<\/span> <span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> UserService <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>UserService<span class=\"token punctuation\">.<\/span>instance<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      UserService<span class=\"token punctuation\">.<\/span>instance <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">UserService<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> UserService<span class=\"token punctuation\">.<\/span>instance<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u7528\u6237\u767b\u5f55<\/span><br \/>\n  <span class=\"token keyword\">async<\/span> <span class=\"token function\">login<\/span><span class=\"token punctuation\">(<\/span>request<span class=\"token operator\">:<\/span> LoginRequestModel<span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span>LoginResponseModel<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;data&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> response <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> HttpUtils<span class=\"token punctuation\">.<\/span><span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token generic-function\"><span class=\"token function\">post<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span>LoginResponseModel<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;data&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\/api\/login&#039;<\/span><span class=\"token punctuation\">,<\/span> request<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> response<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u7528\u6237\u6ce8\u518c<\/span><br \/>\n  <span class=\"token keyword\">async<\/span> <span class=\"token function\">register<\/span><span class=\"token punctuation\">(<\/span>request<span class=\"token operator\">:<\/span> LoginRequestModel<span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span>LoginResponseModel<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;data&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> response <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> HttpUtils<span class=\"token punctuation\">.<\/span><span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token generic-function\"><span class=\"token function\">post<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span>LoginResponseModel<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;data&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\/api\/register&#039;<\/span><span class=\"token punctuation\">,<\/span> request<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> response<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u83b7\u53d6\u7528\u6237\u4fe1\u606f<\/span><br \/>\n  <span class=\"token keyword\">async<\/span> <span class=\"token function\">getUserInfo<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span>UserInfoModel<span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> response <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> HttpUtils<span class=\"token punctuation\">.<\/span><span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token generic-function\"><span class=\"token function\">get<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span>UserInfoModel<span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\/api\/user\/info&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> response<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<hr \/>\n<h4>2.3 &#x1f527; \u7f51\u7edc\u72b6\u6001\u68c0\u6d4b<\/h4>\n<h5>1. \u7f51\u7edc\u72b6\u6001\u670d\u52a1<\/h5>\n<p>\u2328\ufe0f entry\/src\/main\/ets\/services\/NetworkService.ets<\/p>\n<p><span class=\"token keyword\">import<\/span> network <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;&#064;ohos.net.network&#039;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u7f51\u7edc\u72b6\u6001\u7c7b\u578b<\/span><br \/>\n<span class=\"token keyword\">export<\/span> <span class=\"token keyword\">type<\/span> <span class=\"token class-name\">NetworkType<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;wifi&#039;<\/span> <span class=\"token operator\">|<\/span> <span class=\"token string\">&#039;cellular&#039;<\/span> <span class=\"token operator\">|<\/span> <span class=\"token string\">&#039;none&#039;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u7f51\u7edc\u72b6\u6001\u670d\u52a1<\/span><br \/>\n<span class=\"token keyword\">export<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">NetworkService<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">static<\/span> instance<span class=\"token operator\">:<\/span> NetworkService <span class=\"token operator\">|<\/span> <span class=\"token keyword\">null<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u5355\u4f8b\u6a21\u5f0f<\/span><br \/>\n  <span class=\"token keyword\">static<\/span> <span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> NetworkService <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>NetworkService<span class=\"token punctuation\">.<\/span>instance<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      NetworkService<span class=\"token punctuation\">.<\/span>instance <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">NetworkService<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> NetworkService<span class=\"token punctuation\">.<\/span>instance<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u83b7\u53d6\u5f53\u524d\u7f51\u7edc\u72b6\u6001<\/span><br \/>\n  <span class=\"token function\">getCurrentNetworkType<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> NetworkType <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> networkType <span class=\"token operator\">&#061;<\/span> network<span class=\"token punctuation\">.<\/span><span class=\"token function\">getNetworkTypeSync<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">switch<\/span> <span class=\"token punctuation\">(<\/span>networkType<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">case<\/span> network<span class=\"token punctuation\">.<\/span>NetworkType<span class=\"token punctuation\">.<\/span><span class=\"token constant\">WIFI<\/span><span class=\"token operator\">:<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token string\">&#039;wifi&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token keyword\">case<\/span> network<span class=\"token punctuation\">.<\/span>NetworkType<span class=\"token punctuation\">.<\/span><span class=\"token constant\">CELLULAR<\/span><span class=\"token operator\">:<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token string\">&#039;cellular&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token keyword\">default<\/span><span class=\"token operator\">:<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token string\">&#039;none&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u76d1\u542c\u7f51\u7edc\u72b6\u6001\u53d8\u5316<\/span><br \/>\n  <span class=\"token function\">onNetworkTypeChange<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function-variable function\">callback<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">(<\/span>type<span class=\"token operator\">:<\/span> NetworkType<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    network<span class=\"token punctuation\">.<\/span><span class=\"token function\">on<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;netAvailable&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token function\">callback<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getCurrentNetworkType<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    network<span class=\"token punctuation\">.<\/span><span class=\"token function\">on<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;netUnavailable&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token function\">callback<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;none&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h5>2. \u7f51\u7edc\u72b6\u6001\u7ec4\u4ef6<\/h5>\n<p>\u2328\ufe0f entry\/src\/main\/ets\/components\/NetworkStatusComponent.ets<\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> NetworkService <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;..\/services\/NetworkService&#039;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token decorator\"><span class=\"token at operator\">&#064;<\/span><span class=\"token function\">Component<\/span><\/span><br \/>\n<span class=\"token keyword\">export<\/span> struct NetworkStatusComponent <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token decorator\"><span class=\"token at operator\">&#064;<\/span><span class=\"token function\">State<\/span><\/span> networkType<span class=\"token operator\">:<\/span> NetworkService<span class=\"token punctuation\">.<\/span>NetworkType <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;wifi&#039;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token function\">build<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">Row<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> space<span class=\"token operator\">:<\/span> <span class=\"token number\">8<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token function\">Image<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>networkType <span class=\"token operator\">&#061;&#061;&#061;<\/span> <span class=\"token string\">&#039;wifi&#039;<\/span> <span class=\"token operator\">?<\/span> <span class=\"token function\">$r<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;app.media.wifi&#039;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">:<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>networkType <span class=\"token operator\">&#061;&#061;&#061;<\/span> <span class=\"token string\">&#039;cellular&#039;<\/span> <span class=\"token operator\">?<\/span> <span class=\"token function\">$r<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;app.media.cellular&#039;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">:<\/span> <span class=\"token function\">$r<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;app.media.none&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">width<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">20<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">height<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">20<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">objectFit<\/span><span class=\"token punctuation\">(<\/span>ImageFit<span class=\"token punctuation\">.<\/span>Contain<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token function\">Text<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>networkType <span class=\"token operator\">&#061;&#061;&#061;<\/span> <span class=\"token string\">&#039;wifi&#039;<\/span> <span class=\"token operator\">?<\/span> <span class=\"token string\">&#039;WiFi&#039;<\/span> <span class=\"token operator\">:<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>networkType <span class=\"token operator\">&#061;&#061;&#061;<\/span> <span class=\"token string\">&#039;cellular&#039;<\/span> <span class=\"token operator\">?<\/span> <span class=\"token string\">&#039;\u79fb\u52a8\u7f51\u7edc&#039;<\/span> <span class=\"token operator\">:<\/span> <span class=\"token string\">&#039;\u65e0\u7f51\u7edc&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">fontSize<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">14<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">textColor<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>networkType <span class=\"token operator\">&#061;&#061;&#061;<\/span> <span class=\"token string\">&#039;none&#039;<\/span> <span class=\"token operator\">?<\/span> <span class=\"token string\">&#039;#FF0000&#039;<\/span> <span class=\"token operator\">:<\/span> <span class=\"token string\">&#039;#666666&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">width<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;auto&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">height<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;auto&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">padding<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">8<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">16<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">8<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">16<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">backgroundColor<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>networkType <span class=\"token operator\">&#061;&#061;&#061;<\/span> <span class=\"token string\">&#039;none&#039;<\/span> <span class=\"token operator\">?<\/span> <span class=\"token string\">&#039;#FFE0E0&#039;<\/span> <span class=\"token operator\">:<\/span> <span class=\"token string\">&#039;#F5F5F5&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">borderRadius<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">20<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">visible<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>networkType <span class=\"token operator\">&#061;&#061;&#061;<\/span> <span class=\"token string\">&#039;none&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token function\">aboutToAppear<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>networkType <span class=\"token operator\">&#061;<\/span> NetworkService<span class=\"token punctuation\">.<\/span><span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getCurrentNetworkType<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    NetworkService<span class=\"token punctuation\">.<\/span><span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">onNetworkTypeChange<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>type<span class=\"token operator\">:<\/span> NetworkService<span class=\"token punctuation\">.<\/span>NetworkType<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>networkType <span class=\"token operator\">&#061;<\/span> type<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<hr \/>\n<h3>\u4e09\u3001 \u6570\u636e\u6301\u4e45\u5316\u5b9e\u6218 &#x1f5c4;\ufe0f<\/h3>\n<h4>3.1 \u6570\u636e\u6301\u4e45\u5316\u5206\u7c7b<\/h4>\n<p>HarmonyOS Next\u63d0\u4f9b\u4e863\u79cd\u6570\u636e\u6301\u4e45\u5316\u65b9\u5f0f&#xff1a;<\/p>\n<table>\n<tr>\u65b9\u5f0f\u529f\u80fd\u9002\u7528\u573a\u666f<\/tr>\n<tbody>\n<tr>\n<td>Preferences<\/td>\n<td>\u8f7b\u91cf\u7ea7\u5b58\u50a8&#xff0c;\u652f\u6301\u952e\u503c\u5bf9\u5b58\u50a8<\/td>\n<td>\u7528\u6237\u8bbe\u7f6e\u3001\u5e94\u7528\u914d\u7f6e\u3001\u8d2d\u7269\u8f66\u6570\u636e\u7b49\u5c0f\u4f53\u79ef\u6570\u636e<\/td>\n<\/tr>\n<tr>\n<td>SQLite<\/td>\n<td>\u5173\u7cfb\u578b\u6570\u636e\u5e93&#xff0c;\u652f\u6301\u590d\u6742\u67e5\u8be2<\/td>\n<td>\u5546\u54c1\u5217\u8868\u3001\u7528\u6237\u4fe1\u606f\u3001\u8ba2\u5355\u6570\u636e\u7b49\u7ed3\u6784\u5316\u6570\u636e<\/td>\n<\/tr>\n<tr>\n<td>Distributed Data<\/td>\n<td>\u5206\u5e03\u5f0f\u5b58\u50a8&#xff0c;\u652f\u6301\u8de8\u8bbe\u5907\u6570\u636e\u540c\u6b65<\/td>\n<td>\u8d85\u7ea7\u7ec8\u7aef\u591a\u8bbe\u5907\u534f\u540c\u573a\u666f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h4>3.2 \u5b9e\u6218&#xff1a;Preferences\u5b58\u50a8<\/h4>\n<h5>1. Preferences\u5de5\u5177\u7c7b<\/h5>\n<p>\u2328\ufe0f entry\/src\/main\/ets\/utils\/PreferencesUtils.ets<\/p>\n<p><span class=\"token keyword\">import<\/span> preferences <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;&#064;ohos.data.preferences&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> UIAbilityContext <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;&#064;ohos.abilityAccessCtrl&#039;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ Preferences\u5de5\u5177\u7c7b<\/span><br \/>\n<span class=\"token keyword\">export<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">PreferencesUtils<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">static<\/span> instance<span class=\"token operator\">:<\/span> PreferencesUtils <span class=\"token operator\">|<\/span> <span class=\"token keyword\">null<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token keyword\">private<\/span> dataPreferences<span class=\"token operator\">:<\/span> preferences<span class=\"token punctuation\">.<\/span>Preferences <span class=\"token operator\">|<\/span> <span class=\"token keyword\">null<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u5355\u4f8b\u6a21\u5f0f<\/span><br \/>\n  <span class=\"token keyword\">static<\/span> <span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> PreferencesUtils <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>PreferencesUtils<span class=\"token punctuation\">.<\/span>instance<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      PreferencesUtils<span class=\"token punctuation\">.<\/span>instance <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">PreferencesUtils<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> PreferencesUtils<span class=\"token punctuation\">.<\/span>instance<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u521d\u59cb\u5316Preferences<\/span><br \/>\n  <span class=\"token keyword\">async<\/span> <span class=\"token function\">init<\/span><span class=\"token punctuation\">(<\/span>context<span class=\"token operator\">:<\/span> UIAbilityContext<span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">void<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>dataPreferences<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>dataPreferences <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> preferences<span class=\"token punctuation\">.<\/span><span class=\"token function\">getPreferences<\/span><span class=\"token punctuation\">(<\/span>context<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;app_preferences&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u83b7\u53d6\u503c<\/span><br \/>\n  <span class=\"token generic-function\"><span class=\"token function\">get<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span><span class=\"token constant\">T<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span>key<span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span><span class=\"token punctuation\">,<\/span> defaultValue<span class=\"token operator\">:<\/span> <span class=\"token constant\">T<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token constant\">T<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>dataPreferences<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">return<\/span> defaultValue<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>dataPreferences<span class=\"token punctuation\">.<\/span><span class=\"token function\">getSync<\/span><span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">,<\/span> defaultValue<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">as<\/span> <span class=\"token constant\">T<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u8bbe\u7f6e\u503c<\/span><br \/>\n  <span class=\"token keyword\">async<\/span> <span class=\"token generic-function\"><span class=\"token function\">put<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span><span class=\"token constant\">T<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span>key<span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span><span class=\"token punctuation\">,<\/span> value<span class=\"token operator\">:<\/span> <span class=\"token constant\">T<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">void<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>dataPreferences<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">return<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>dataPreferences<span class=\"token punctuation\">.<\/span><span class=\"token function\">put<\/span><span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">,<\/span> value<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>dataPreferences<span class=\"token punctuation\">.<\/span><span class=\"token function\">flush<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u5220\u9664\u503c<\/span><br \/>\n  <span class=\"token keyword\">async<\/span> <span class=\"token keyword\">delete<\/span><span class=\"token punctuation\">(<\/span>key<span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">void<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>dataPreferences<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">return<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>dataPreferences<span class=\"token punctuation\">.<\/span><span class=\"token function\">delete<\/span><span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>dataPreferences<span class=\"token punctuation\">.<\/span><span class=\"token function\">flush<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u6e05\u7a7a\u6240\u6709\u503c<\/span><br \/>\n  <span class=\"token keyword\">async<\/span> <span class=\"token function\">clear<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">void<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>dataPreferences<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">return<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> keys <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>dataPreferences<span class=\"token punctuation\">.<\/span><span class=\"token function\">keys<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> key <span class=\"token keyword\">of<\/span> keys<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">await<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>dataPreferences<span class=\"token punctuation\">.<\/span><span class=\"token function\">delete<\/span><span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>dataPreferences<span class=\"token punctuation\">.<\/span><span class=\"token function\">flush<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h5>2. Preferences\u5e94\u7528<\/h5>\n<p>\u2328\ufe0f entry\/src\/main\/ets\/services\/UserService.ets&#xff08;\u4fee\u6539&#xff09;<\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> HttpUtils <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;..\/utils\/HttpUtils&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> PreferencesUtils <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;..\/utils\/PreferencesUtils&#039;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u7528\u6237\u670d\u52a1<\/span><br \/>\n<span class=\"token keyword\">export<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">UserService<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token comment\">\/\/ &#8230;<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u7528\u6237\u767b\u5f55&#xff08;\u6dfb\u52a0token\u5b58\u50a8&#xff09;<\/span><br \/>\n  <span class=\"token keyword\">async<\/span> <span class=\"token function\">login<\/span><span class=\"token punctuation\">(<\/span>request<span class=\"token operator\">:<\/span> LoginRequestModel<span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span>LoginResponseModel<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;data&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> response <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> HttpUtils<span class=\"token punctuation\">.<\/span><span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token generic-function\"><span class=\"token function\">post<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span>LoginResponseModel<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;data&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\/api\/login&#039;<\/span><span class=\"token punctuation\">,<\/span> request<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u5b58\u50a8token\u5230Preferences<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> PreferencesUtils<span class=\"token punctuation\">.<\/span><span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">put<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;token&#039;<\/span><span class=\"token punctuation\">,<\/span> response<span class=\"token punctuation\">.<\/span>token<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> response<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u83b7\u53d6\u7528\u6237\u4fe1\u606f&#xff08;\u6dfb\u52a0token\u8ba4\u8bc1&#xff09;<\/span><br \/>\n  <span class=\"token keyword\">async<\/span> <span class=\"token function\">getUserInfo<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span>UserInfoModel<span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> token <span class=\"token operator\">&#061;<\/span> PreferencesUtils<span class=\"token punctuation\">.<\/span><span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token generic-function\"><span class=\"token function\">get<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span><span class=\"token builtin\">string<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;token&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    HttpUtils<span class=\"token punctuation\">.<\/span><span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">addHeader<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;Authorization&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">&#096;<\/span><span class=\"token string\">Bearer <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>token<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">&#096;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> response <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> HttpUtils<span class=\"token punctuation\">.<\/span><span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token generic-function\"><span class=\"token function\">get<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span>UserInfoModel<span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\/api\/user\/info&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> response<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<hr \/>\n<h4>3.3 \u5b9e\u6218&#xff1a;SQLite\u5b58\u50a8<\/h4>\n<h5>1. SQLite\u6570\u636e\u5e93\u7ba1\u7406\u7c7b<\/h5>\n<p>\u2328\ufe0f entry\/src\/main\/ets\/utils\/SQLiteUtils.ets<\/p>\n<p><span class=\"token keyword\">import<\/span> relationalStore <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;&#064;ohos.data.relationalStore&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> UIAbilityContext <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;&#064;ohos.abilityAccessCtrl&#039;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u6570\u636e\u5e93\u914d\u7f6e<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token constant\">DB_CONFIG<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  name<span class=\"token operator\">:<\/span> <span class=\"token string\">&#039;app_db.db&#039;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n  securityLevel<span class=\"token operator\">:<\/span> relationalStore<span class=\"token punctuation\">.<\/span>SecurityLevel<span class=\"token punctuation\">.<\/span><span class=\"token constant\">S1<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ SQLite\u6570\u636e\u5e93\u7ba1\u7406\u7c7b<\/span><br \/>\n<span class=\"token keyword\">export<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">SQLiteUtils<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">static<\/span> instance<span class=\"token operator\">:<\/span> SQLiteUtils <span class=\"token operator\">|<\/span> <span class=\"token keyword\">null<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token keyword\">private<\/span> rdbStore<span class=\"token operator\">:<\/span> relationalStore<span class=\"token punctuation\">.<\/span>RdbStore <span class=\"token operator\">|<\/span> <span class=\"token keyword\">null<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u5355\u4f8b\u6a21\u5f0f<\/span><br \/>\n  <span class=\"token keyword\">static<\/span> <span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> SQLiteUtils <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>SQLiteUtils<span class=\"token punctuation\">.<\/span>instance<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      SQLiteUtils<span class=\"token punctuation\">.<\/span>instance <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">SQLiteUtils<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> SQLiteUtils<span class=\"token punctuation\">.<\/span>instance<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u521d\u59cb\u5316\u6570\u636e\u5e93<\/span><br \/>\n  <span class=\"token keyword\">async<\/span> <span class=\"token function\">init<\/span><span class=\"token punctuation\">(<\/span>context<span class=\"token operator\">:<\/span> UIAbilityContext<span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">void<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>rdbStore<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>rdbStore <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> relationalStore<span class=\"token punctuation\">.<\/span><span class=\"token function\">getRdbStore<\/span><span class=\"token punctuation\">(<\/span>context<span class=\"token punctuation\">,<\/span> <span class=\"token constant\">DB_CONFIG<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token comment\">\/\/ \u521b\u5efa\u7528\u6237\u8868<\/span><br \/>\n      <span class=\"token keyword\">await<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">createUserTable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token comment\">\/\/ \u521b\u5efa\u5546\u54c1\u8868<\/span><br \/>\n      <span class=\"token keyword\">await<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">createProductTable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token comment\">\/\/ \u521b\u5efa\u8d2d\u7269\u8f66\u8868<\/span><br \/>\n      <span class=\"token keyword\">await<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">createCartTable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u521b\u5efa\u7528\u6237\u8868<\/span><br \/>\n  <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token function\">createUserTable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">void<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> sql <span class=\"token operator\">&#061;<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">&#096;<\/span><span class=\"token string\"><br \/>\n      CREATE TABLE IF NOT EXISTS user (<br \/>\n        id INTEGER PRIMARY KEY AUTOINCREMENT,<br \/>\n        username TEXT NOT NULL,<br \/>\n        avatar TEXT,<br \/>\n        nickname TEXT,<br \/>\n        email TEXT,<br \/>\n        phone TEXT,<br \/>\n        gender INTEGER,<br \/>\n        birthday TEXT<br \/>\n      )<br \/>\n    <\/span><span class=\"token template-punctuation string\">&#096;<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>rdbStore<span class=\"token operator\">!<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">executeSql<\/span><span class=\"token punctuation\">(<\/span>sql<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u521b\u5efa\u5546\u54c1\u8868<\/span><br \/>\n  <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token function\">createProductTable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">void<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> sql <span class=\"token operator\">&#061;<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">&#096;<\/span><span class=\"token string\"><br \/>\n      CREATE TABLE IF NOT EXISTS product (<br \/>\n        id INTEGER PRIMARY KEY AUTOINCREMENT,<br \/>\n        name TEXT NOT NULL,<br \/>\n        imageUrl TEXT,<br \/>\n        price REAL,<br \/>\n        originalPrice REAL,<br \/>\n        sales INTEGER<br \/>\n      )<br \/>\n    <\/span><span class=\"token template-punctuation string\">&#096;<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>rdbStore<span class=\"token operator\">!<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">executeSql<\/span><span class=\"token punctuation\">(<\/span>sql<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u521b\u5efa\u8d2d\u7269\u8f66\u8868<\/span><br \/>\n  <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token function\">createCartTable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">void<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> sql <span class=\"token operator\">&#061;<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">&#096;<\/span><span class=\"token string\"><br \/>\n      CREATE TABLE IF NOT EXISTS cart (<br \/>\n        id INTEGER PRIMARY KEY AUTOINCREMENT,<br \/>\n        productId INTEGER NOT NULL,<br \/>\n        name TEXT NOT NULL,<br \/>\n        imageUrl TEXT,<br \/>\n        price REAL,<br \/>\n        count INTEGER,<br \/>\n        isChecked INTEGER<br \/>\n      )<br \/>\n    <\/span><span class=\"token template-punctuation string\">&#096;<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>rdbStore<span class=\"token operator\">!<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">executeSql<\/span><span class=\"token punctuation\">(<\/span>sql<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u67e5\u8be2\u6570\u636e<\/span><br \/>\n  <span class=\"token keyword\">async<\/span> <span class=\"token function\">query<\/span><span class=\"token punctuation\">(<\/span>sql<span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span><span class=\"token punctuation\">,<\/span> args<span class=\"token operator\">?<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Array<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token builtin\">string<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token builtin\">Array<\/span><span class=\"token operator\">&lt;<\/span>relationalStore<span class=\"token punctuation\">.<\/span>ResultSet<span class=\"token operator\">&gt;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>rdbStore<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> resultSet <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>rdbStore<span class=\"token punctuation\">.<\/span><span class=\"token function\">querySql<\/span><span class=\"token punctuation\">(<\/span>sql<span class=\"token punctuation\">,<\/span> args<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> data<span class=\"token operator\">:<\/span> <span class=\"token builtin\">Array<\/span><span class=\"token operator\">&lt;<\/span>relationalStore<span class=\"token punctuation\">.<\/span>ResultSet<span class=\"token operator\">&gt;<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>resultSet<span class=\"token punctuation\">.<\/span><span class=\"token function\">goToFirstRow<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">do<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        data<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span>resultSet<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>resultSet<span class=\"token punctuation\">.<\/span><span class=\"token function\">goToNextRow<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> data<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u63d2\u5165\u6570\u636e<\/span><br \/>\n  <span class=\"token keyword\">async<\/span> <span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span>tableName<span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span><span class=\"token punctuation\">,<\/span> values<span class=\"token operator\">:<\/span> Record<span class=\"token operator\">&lt;<\/span><span class=\"token builtin\">string<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">any<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token builtin\">number<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>rdbStore<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">return<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> rowId <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>rdbStore<span class=\"token punctuation\">.<\/span><span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span>tableName<span class=\"token punctuation\">,<\/span> values<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> rowId<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u66f4\u65b0\u6570\u636e<\/span><br \/>\n  <span class=\"token keyword\">async<\/span> <span class=\"token function\">update<\/span><span class=\"token punctuation\">(<\/span>tableName<span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span><span class=\"token punctuation\">,<\/span> values<span class=\"token operator\">:<\/span> Record<span class=\"token operator\">&lt;<\/span><span class=\"token builtin\">string<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">any<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">,<\/span> whereClause<span class=\"token operator\">?<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span><span class=\"token punctuation\">,<\/span> whereArgs<span class=\"token operator\">?<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Array<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token builtin\">string<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token builtin\">number<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>rdbStore<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> count <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>rdbStore<span class=\"token punctuation\">.<\/span><span class=\"token function\">update<\/span><span class=\"token punctuation\">(<\/span>tableName<span class=\"token punctuation\">,<\/span> values<span class=\"token punctuation\">,<\/span> whereClause<span class=\"token punctuation\">,<\/span> whereArgs<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> count<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u5220\u9664\u6570\u636e<\/span><br \/>\n  <span class=\"token keyword\">async<\/span> <span class=\"token keyword\">delete<\/span><span class=\"token punctuation\">(<\/span>tableName<span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span><span class=\"token punctuation\">,<\/span> whereClause<span class=\"token operator\">?<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span><span class=\"token punctuation\">,<\/span> whereArgs<span class=\"token operator\">?<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Array<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token builtin\">string<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token builtin\">number<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>rdbStore<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> count <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>rdbStore<span class=\"token punctuation\">.<\/span><span class=\"token function\">delete<\/span><span class=\"token punctuation\">(<\/span>tableName<span class=\"token punctuation\">,<\/span> whereClause<span class=\"token punctuation\">,<\/span> whereArgs<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> count<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h5>2. SQLite\u5e94\u7528<\/h5>\n<p>\u2328\ufe0f entry\/src\/main\/ets\/services\/ProductService.ets&#xff08;\u4fee\u6539&#xff09;<\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> HttpUtils <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;..\/utils\/HttpUtils&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> GoodsModel <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;..\/models\/HomeModel&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> SQLiteUtils <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;..\/utils\/SQLiteUtils&#039;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u5546\u54c1\u670d\u52a1<\/span><br \/>\n<span class=\"token keyword\">export<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ProductService<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token comment\">\/\/ &#8230;<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u83b7\u53d6\u5546\u54c1\u5217\u8868&#xff08;\u5148\u4ece\u672c\u5730\u6570\u636e\u5e93\u83b7\u53d6&#xff0c;\u518d\u4ece\u7f51\u7edc\u83b7\u53d6&#xff09;<\/span><br \/>\n  <span class=\"token keyword\">async<\/span> <span class=\"token function\">getProductList<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token builtin\">Array<\/span><span class=\"token operator\">&lt;<\/span>GoodsModel<span class=\"token operator\">&gt;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u5148\u4ece\u672c\u5730\u6570\u636e\u5e93\u83b7\u53d6<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> localData <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getProductListFromLocal<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>localData<span class=\"token punctuation\">.<\/span>length <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">return<\/span> localData<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u672c\u5730\u6570\u636e\u5e93\u65e0\u6570\u636e&#xff0c;\u4ece\u7f51\u7edc\u83b7\u53d6<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> remoteData <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getProductListFromRemote<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u5c06\u7f51\u7edc\u6570\u636e\u5b58\u5165\u672c\u5730\u6570\u636e\u5e93<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">saveProductListToLocal<\/span><span class=\"token punctuation\">(<\/span>remoteData<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> remoteData<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u4ece\u672c\u5730\u6570\u636e\u5e93\u83b7\u53d6\u5546\u54c1\u5217\u8868<\/span><br \/>\n  <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token function\">getProductListFromLocal<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token builtin\">Array<\/span><span class=\"token operator\">&lt;<\/span>GoodsModel<span class=\"token operator\">&gt;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> sql <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;SELECT * FROM product&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> resultSet <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> SQLiteUtils<span class=\"token punctuation\">.<\/span><span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">query<\/span><span class=\"token punctuation\">(<\/span>sql<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> data<span class=\"token operator\">:<\/span> <span class=\"token builtin\">Array<\/span><span class=\"token operator\">&lt;<\/span>GoodsModel<span class=\"token operator\">&gt;<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    resultSet<span class=\"token punctuation\">.<\/span><span class=\"token function\">forEach<\/span><span class=\"token punctuation\">(<\/span>row <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      data<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><br \/>\n        id<span class=\"token operator\">:<\/span> row<span class=\"token punctuation\">.<\/span><span class=\"token function\">getDouble<\/span><span class=\"token punctuation\">(<\/span>row<span class=\"token punctuation\">.<\/span><span class=\"token function\">getColumnIndex<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;id&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        name<span class=\"token operator\">:<\/span> row<span class=\"token punctuation\">.<\/span><span class=\"token function\">getString<\/span><span class=\"token punctuation\">(<\/span>row<span class=\"token punctuation\">.<\/span><span class=\"token function\">getColumnIndex<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;name&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        imageUrl<span class=\"token operator\">:<\/span> row<span class=\"token punctuation\">.<\/span><span class=\"token function\">getString<\/span><span class=\"token punctuation\">(<\/span>row<span class=\"token punctuation\">.<\/span><span class=\"token function\">getColumnIndex<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;imageUrl&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        price<span class=\"token operator\">:<\/span> row<span class=\"token punctuation\">.<\/span><span class=\"token function\">getDouble<\/span><span class=\"token punctuation\">(<\/span>row<span class=\"token punctuation\">.<\/span><span class=\"token function\">getColumnIndex<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;price&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        originalPrice<span class=\"token operator\">:<\/span> row<span class=\"token punctuation\">.<\/span><span class=\"token function\">getDouble<\/span><span class=\"token punctuation\">(<\/span>row<span class=\"token punctuation\">.<\/span><span class=\"token function\">getColumnIndex<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;originalPrice&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        sales<span class=\"token operator\">:<\/span> row<span class=\"token punctuation\">.<\/span><span class=\"token function\">getDouble<\/span><span class=\"token punctuation\">(<\/span>row<span class=\"token punctuation\">.<\/span><span class=\"token function\">getColumnIndex<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;sales&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> data<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u4ece\u7f51\u7edc\u83b7\u53d6\u5546\u54c1\u5217\u8868<\/span><br \/>\n  <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token function\">getProductListFromRemote<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token builtin\">Array<\/span><span class=\"token operator\">&lt;<\/span>GoodsModel<span class=\"token operator\">&gt;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> response <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> HttpUtils<span class=\"token punctuation\">.<\/span><span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token generic-function\"><span class=\"token function\">get<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span><span class=\"token builtin\">Array<\/span><span class=\"token operator\">&lt;<\/span>GoodsModel<span class=\"token operator\">&gt;&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\/api\/products&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> response<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u5c06\u5546\u54c1\u5217\u8868\u5b58\u5165\u672c\u5730\u6570\u636e\u5e93<\/span><br \/>\n  <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token function\">saveProductListToLocal<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token operator\">:<\/span> <span class=\"token builtin\">Array<\/span><span class=\"token operator\">&lt;<\/span>GoodsModel<span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">void<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> item <span class=\"token keyword\">of<\/span> data<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">await<\/span> SQLiteUtils<span class=\"token punctuation\">.<\/span><span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;product&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        id<span class=\"token operator\">:<\/span> item<span class=\"token punctuation\">.<\/span>id<span class=\"token punctuation\">,<\/span><br \/>\n        name<span class=\"token operator\">:<\/span> item<span class=\"token punctuation\">.<\/span>name<span class=\"token punctuation\">,<\/span><br \/>\n        imageUrl<span class=\"token operator\">:<\/span> item<span class=\"token punctuation\">.<\/span>imageUrl<span class=\"token punctuation\">,<\/span><br \/>\n        price<span class=\"token operator\">:<\/span> item<span class=\"token punctuation\">.<\/span>price<span class=\"token punctuation\">,<\/span><br \/>\n        originalPrice<span class=\"token operator\">:<\/span> item<span class=\"token punctuation\">.<\/span>originalPrice<span class=\"token punctuation\">,<\/span><br \/>\n        sales<span class=\"token operator\">:<\/span> item<span class=\"token punctuation\">.<\/span>sales<br \/>\n      <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<hr \/>\n<h3>\u56db\u3001 \u7528\u6237\u4f53\u9a8c\u4f18\u5316 &#x1f3a8;<\/h3>\n<h4>4.1 \u52a0\u8f7d\u52a8\u753b<\/h4>\n<p>\u2328\ufe0f entry\/src\/main\/ets\/components\/LoadingComponent.ets<\/p>\n<p><span class=\"token decorator\"><span class=\"token at operator\">&#064;<\/span><span class=\"token function\">Component<\/span><\/span><br \/>\n<span class=\"token keyword\">export<\/span> struct LoadingComponent <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token decorator\"><span class=\"token at operator\">&#064;<\/span><span class=\"token function\">Prop<\/span><\/span> isLoading<span class=\"token operator\">:<\/span> <span class=\"token builtin\">boolean<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token function\">build<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">Column<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> space<span class=\"token operator\">:<\/span> <span class=\"token number\">16<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token function\">Progress<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><br \/>\n        value<span class=\"token operator\">:<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        total<span class=\"token operator\">:<\/span> <span class=\"token number\">100<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        type<span class=\"token operator\">:<\/span> ProgressType<span class=\"token punctuation\">.<\/span>ScaleRing<br \/>\n      <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">width<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">60<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">height<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">60<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">style<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> strokeWidth<span class=\"token operator\">:<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span> scaleCount<span class=\"token operator\">:<\/span> <span class=\"token number\">12<\/span><span class=\"token punctuation\">,<\/span> duration<span class=\"token operator\">:<\/span> <span class=\"token number\">1000<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>      <span class=\"token function\">Text<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u52a0\u8f7d\u4e2d&#8230;&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">fontSize<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">14<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">textColor<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;#666666&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">width<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;100%&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">height<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;100%&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">justifyContent<\/span><span class=\"token punctuation\">(<\/span>FlexAlign<span class=\"token punctuation\">.<\/span>Center<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">visible<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>isLoading<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<hr \/>\n<h4>4.2 \u9519\u8bef\u5904\u7406<\/h4>\n<p>\u2328\ufe0f entry\/src\/main\/ets\/components\/ErrorComponent.ets<\/p>\n<p><span class=\"token decorator\"><span class=\"token at operator\">&#064;<\/span><span class=\"token function\">Component<\/span><\/span><br \/>\n<span class=\"token keyword\">export<\/span> struct ErrorComponent <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token decorator\"><span class=\"token at operator\">&#064;<\/span><span class=\"token function\">Prop<\/span><\/span> isError<span class=\"token operator\">:<\/span> <span class=\"token builtin\">boolean<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token decorator\"><span class=\"token at operator\">&#064;<\/span><span class=\"token function\">Prop<\/span><\/span> errorMessage<span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;\u8bf7\u6c42\u5931\u8d25&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token function-variable function\">onRetry<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token keyword\">void<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token function\">build<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">Column<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> space<span class=\"token operator\">:<\/span> <span class=\"token number\">16<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token function\">Image<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">$r<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;app.media.error&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">width<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">80<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">height<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">80<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">objectFit<\/span><span class=\"token punctuation\">(<\/span>ImageFit<span class=\"token punctuation\">.<\/span>Contain<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>      <span class=\"token function\">Text<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>errorMessage<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">fontSize<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">14<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">textColor<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;#666666&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>      <span class=\"token function\">Button<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u91cd\u8bd5&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">width<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">120<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">height<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">48<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">backgroundColor<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;#007DFF&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">onClick<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">onRetry<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">width<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;100%&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">height<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;100%&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">justifyContent<\/span><span class=\"token punctuation\">(<\/span>FlexAlign<span class=\"token punctuation\">.<\/span>Center<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">visible<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>isError<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<hr \/>\n<h3>\u4e94\u3001 \u9879\u76ee\u8fd0\u884c\u4e0e\u6548\u679c\u9a8c\u8bc1 &#x1f4f1;<\/h3>\n<h4>5.1 \u9879\u76ee\u914d\u7f6e<\/h4>\n<h5>1. \u914d\u7f6eAPI\u5730\u5740<\/h5>\n<p>\u5728\u300centry\/src\/main\/ets\/utils\/HttpUtils.ets\u300d\u4e2d\u66ff\u6362\u4e3a\u4f60\u7684\u771f\u5b9eAPI\u5730\u5740&#xff1a;<\/p>\n<p><span class=\"token keyword\">const<\/span> <span class=\"token constant\">HTTP_CONFIG<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  baseUrl<span class=\"token operator\">:<\/span> <span class=\"token string\">&#039;https:\/\/your-api-address.com&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token comment\">\/\/ \u66ff\u6362\u4e3a\u4f60\u7684API\u5730\u5740<\/span><br \/>\n  <span class=\"token comment\">\/\/ &#8230;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h5>2. \u521d\u59cb\u5316\u6570\u636e\u6301\u4e45\u5316<\/h5>\n<p>\u5728\u300centry\/src\/main\/ets\/entryability\/EntryAbility.ts\u300d\u4e2d\u521d\u59cb\u5316Preferences\u548cSQLite&#xff1a;<\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> PreferencesUtils <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;..\/utils\/PreferencesUtils&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> SQLiteUtils <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;..\/utils\/SQLiteUtils&#039;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">export<\/span> <span class=\"token keyword\">default<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">EntryAbility<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">UIAbility<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token function\">onCreate<\/span><span class=\"token punctuation\">(<\/span>want<span class=\"token operator\">:<\/span> Want<span class=\"token punctuation\">,<\/span> launchParam<span class=\"token operator\">:<\/span> AbilityConstant<span class=\"token punctuation\">.<\/span>LaunchParam<span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u521d\u59cb\u5316Preferences<\/span><br \/>\n    PreferencesUtils<span class=\"token punctuation\">.<\/span><span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>context<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u521d\u59cb\u5316SQLite<\/span><br \/>\n    SQLiteUtils<span class=\"token punctuation\">.<\/span><span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>context<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ &#8230;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<hr \/>\n<h4>5.2 &#x1f527; \u9879\u76ee\u8fd0\u884c<\/h4>\n<p>\u2460 \u5728DevEco Studio\u4e2d\u70b9\u51fb\u300cRun\u300d\u6309\u94ae&#xff1b; \u2461 \u9009\u62e9\u8c03\u8bd5\u8bbe\u5907&#xff0c;\u70b9\u51fb\u300cOK\u300d&#xff1b; \u2462 \u7b49\u5f85\u7f16\u8bd1\u5b89\u88c5\u5b8c\u6210&#xff0c;\u5e94\u7528\u4f1a\u81ea\u52a8\u5728\u8bbe\u5907\u4e0a\u542f\u52a8\u3002<\/p>\n<h5>\u6548\u679c\u9a8c\u8bc1<\/h5>\n<p>\u2705 \u5546\u54c1\u5217\u8868\u7f51\u7edc\u8bf7\u6c42&#xff1a;\u4ece\u771f\u5b9eAPI\u83b7\u53d6\u5546\u54c1\u6570\u636e&#xff0c;\u652f\u6301\u672c\u5730\u7f13\u5b58&#xff1b; \u2705 \u7528\u6237\u4fe1\u606f\u7f51\u7edc\u8bf7\u6c42&#xff1a;\u5b9e\u73b0\u7528\u6237\u767b\u5f55\u3001\u6ce8\u518c\u3001\u4e2a\u4eba\u4fe1\u606f\u67e5\u8be2&#xff1b; \u2705 \u7f51\u7edc\u72b6\u6001\u68c0\u6d4b&#xff1a;\u5728\u65e0\u7f51\u7edc\u65f6\u663e\u793a\u7f51\u7edc\u72b6\u6001\u63d0\u793a&#xff1b; \u2705 \u52a0\u8f7d\u52a8\u753b&#xff1a;\u5546\u54c1\u5217\u8868\u52a0\u8f7d\u65f6\u663e\u793a\u73af\u5f62\u8fdb\u5ea6\u6761&#xff1b; \u2705 \u9519\u8bef\u5904\u7406&#xff1a;\u8bf7\u6c42\u5931\u8d25\u65f6\u663e\u793a\u9519\u8bef\u4fe1\u606f\u4e0e\u91cd\u8bd5\u6309\u94ae\u3002<\/p>\n<hr \/>\n<h3>\u516d\u3001 \u603b\u7ed3\u4e0e\u672a\u6765\u5b66\u4e60\u8def\u5f84 &#x1f680;<\/h3>\n<h4>6.1 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\u2705<\/h3>\n<p>\u606d\u559c\u4f60&#xff01;\u4f60\u5df2\u7ecf\u5b8c\u6210\u4e86\u300a\u9e3f\u8499APP\u5f00\u53d1\u4ece\u5165\u95e8\u5230\u7cbe\u901a\u300b\u7684\u7b2c4\u7bc7&#xff0c;\u638c\u63e1\u4e86\u7f51\u7edc\u8bf7\u6c42\u4e0e\u6570\u636e\u6301\u4e45\u5316\u7684\u6838\u5fc3\u6280\u672f\u3002<\/p>\n<p>\u4ece\u73b0\u5728\u5f00\u59cb&#xff0c;\u4f60\u5df2\u5177\u5907\u4e86\u4e0e\u540e\u7aefAPI\u4ea4\u4e92\u548c\u672c\u5730\u6570\u636e\u5b58\u50a8\u7684\u80fd\u529b\u3002\u672a\u6765\u76848\u7bc7\u6587\u7ae0\u5c06\u9010\u6b65\u6784\u5efa\u4e00\u4e2a\u5b8c\u6574\u7684\u9e3f\u8499\u7535\u5546\u8d2d\u7269\u8f66\u5168\u6808\u9879\u76ee&#xff0c;\u5e76\u6700\u7ec8\u5b9e\u73b0\u534e\u4e3a\u5e94\u7528\u5e02\u573a\u4e0a\u67b6\u53d8\u73b0\u3002<\/p>\n<p>\u8ba9\u6211\u4eec\u4e00\u8d77\u671f\u5f85\u9e3f\u8499\u751f\u6001\u7684\u7206\u53d1&#xff01; 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