{"id":52597,"date":"2025-08-11T16:19:47","date_gmt":"2025-08-11T08:19:47","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/52597.html"},"modified":"2025-08-11T16:19:47","modified_gmt":"2025-08-11T08:19:47","slug":"spring-boot-2-6-0-%e5%be%aa%e7%8e%af%e4%be%9d%e8%b5%96%e9%97%ae%e9%a2%98%e5%8f%8a%e8%a7%a3%e5%86%b3%e6%96%b9%e6%a1%88","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/52597.html","title":{"rendered":"Spring Boot 2.6.0+ \u5faa\u73af\u4f9d\u8d56\u95ee\u9898\u53ca\u89e3\u51b3\u65b9\u6848"},"content":{"rendered":"<h2>Spring Boot 2.6.0&#043; \u5faa\u73af\u4f9d\u8d56\u95ee\u9898\u53ca\u89e3\u51b3\u65b9\u6848<\/h2>\n<h3>\u76ee\u5f55<\/h3>\n<ul>\n<li>\u80cc\u666f<\/li>\n<li>\u89e3\u51b3\u65b9\u6848\n<ul>\n<li>1. \u914d\u7f6e\u6587\u4ef6\u5f00\u542f\u5faa\u73af\u4f9d\u8d56&#xff08;\u4fb5\u5165\u6027\u6700\u4f4e&#xff0c;\u4e34\u65f6\u65b9\u6848&#xff09;<\/li>\n<li>2. &#064;Lazy \u5ef6\u8fdf\u6ce8\u5165&#xff08;\u4fb5\u5165\u6027\u4f4e&#xff0c;\u63a8\u8350\u4f18\u5148\u5c1d\u8bd5&#xff09;<\/li>\n<li>3. \u624b\u52a8\u4ece\u5bb9\u5668\u83b7\u53d6&#xff08;ApplicationContextAware&#xff0c;\u4fb5\u5165\u6027\u4e2d\u7b49&#xff09;<\/li>\n<li>4. \u63a5\u53e3\u9694\u79bb \/ \u4e2d\u95f4\u5c42\u89e3\u8026&#xff08;\u4fb5\u5165\u6027\u9ad8&#xff0c;\u63a8\u8350\u957f\u671f\u65b9\u6848&#xff09;<\/li>\n<li>5. \u4e8b\u4ef6\u9a71\u52a8&#xff08;ApplicationEvent&#xff0c;\u4fb5\u5165\u6027\u4e2d\u7b49&#xff0c;\u9002\u5408\u901a\u77e5\u573a\u666f&#xff09;<\/li>\n<\/ul>\n<\/li>\n<li>\u603b\u7ed3<\/li>\n<li>\u7248\u672c\u5dee\u5f02\u8865\u5145<\/li>\n<\/ul>\n<h3>\u80cc\u666f<\/h3>\n<p>\u4ece Spring Boot 2.6.0 \u5f00\u59cb&#xff0c;Spring \u56e2\u961f\u9ed8\u8ba4\u7981\u6b62\u4e86\u5faa\u73af\u4f9d\u8d56&#xff08;circular references&#xff09;&#xff0c;\u8fd9\u662f\u4e00\u4e2a\u91cd\u8981\u7684\u8bbe\u8ba1\u53d8\u66f4\u3002\u4e3b\u8981\u539f\u56e0\u5305\u62ec&#xff1a;<\/p>\n<li>\u8bbe\u8ba1\u539f\u5219&#xff1a;\u5faa\u73af\u4f9d\u8d56\u901a\u5e38\u6697\u793a\u7740\u4e0d\u826f\u7684\u4ee3\u7801\u8bbe\u8ba1&#xff0c;\u8fdd\u53cd\u4e86\u5355\u4e00\u804c\u8d23\u539f\u5219<\/li>\n<li>\u521d\u59cb\u5316\u95ee\u9898&#xff1a;\u5faa\u73af\u4f9d\u8d56\u53ef\u80fd\u5bfc\u81f4\u96be\u4ee5\u9884\u6d4b\u7684bean\u521d\u59cb\u5316\u987a\u5e8f\u548c\u72b6\u6001<\/li>\n<li>\u8c03\u8bd5\u56f0\u96be&#xff1a;\u5faa\u73af\u4f9d\u8d56\u4f7f\u5f97\u95ee\u9898\u6392\u67e5\u53d8\u5f97\u590d\u6742<\/li>\n<li>\u6027\u80fd\u8003\u8651&#xff1a;\u4e09\u7ea7\u7f13\u5b58\u673a\u5236\u589e\u52a0\u4e86\u989d\u5916\u7684\u5185\u5b58\u5f00\u9500<\/li>\n<p>\u914d\u7f6e\u53d8\u66f4&#xff1a;<\/p>\n<p><span class=\"token key atrule\">spring<\/span><span class=\"token punctuation\">:<\/span><br \/>\n  <span class=\"token key atrule\">main<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token key atrule\">allow-circular-references<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token boolean important\">false<\/span>  <span class=\"token comment\"># 2.6&#043; \u9ed8\u8ba4\u503c<\/span><\/p>\n<p>\u5e38\u89c1\u9519\u8bef\u4fe1\u606f&#xff1a;<\/p>\n<p>The dependencies of some of the beans in the application context form a cycle:<br \/>\n\u250c\u2500\u2500\u2500\u2500\u2500\u2510<br \/>\n|  dictionaryServiceImpl defined in file [&#8230;DictionaryServiceImpl.class]<br \/>\n\u2191     \u2193<br \/>\n|  dictionaryDataServiceImpl defined in file [&#8230;DictionaryDataServiceImpl.class]<br \/>\n\u2514\u2500\u2500\u2500\u2500\u2500\u2518<\/p>\n<h3>\u89e3\u51b3\u65b9\u6848<\/h3>\n<h4>1. \u914d\u7f6e\u6587\u4ef6\u5f00\u542f\u5faa\u73af\u4f9d\u8d56&#xff08;\u4fb5\u5165\u6027\u6700\u4f4e&#xff0c;\u4e34\u65f6\u65b9\u6848&#xff09;<\/h4>\n<p>\u9002\u7528\u573a\u666f&#xff1a;\u5feb\u901f\u89e3\u51b3\u9057\u7559\u9879\u76ee\u7684\u542f\u52a8\u95ee\u9898&#xff0c;\u4e34\u65f6\u8fc7\u6e21\u65b9\u6848<\/p>\n<p><span class=\"token comment\"># application.yml<\/span><br \/>\n<span class=\"token key atrule\">spring<\/span><span class=\"token punctuation\">:<\/span><br \/>\n  <span class=\"token key atrule\">main<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token key atrule\">allow-circular-references<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token boolean important\">true<\/span><\/p>\n<p>\u4f18\u70b9&#xff1a;<\/p>\n<ul>\n<li>\u96f6\u4ee3\u7801\u4fee\u6539<\/li>\n<li>\u7acb\u5373\u751f\u6548<\/li>\n<li>\u4fdd\u6301\u539f\u6709\u4e1a\u52a1\u903b\u8f91\u4e0d\u53d8<\/li>\n<\/ul>\n<p>\u7f3a\u70b9&#xff1a;<\/p>\n<ul>\n<li>\u6cbb\u6807\u4e0d\u6cbb\u672c<\/li>\n<li>\u53ef\u80fd\u9690\u85cf\u6f5c\u5728\u7684\u8bbe\u8ba1\u95ee\u9898<\/li>\n<li>\u4e0d\u7b26\u5408Spring\u65b0\u7248\u672c\u7684\u8bbe\u8ba1\u7406\u5ff5<\/li>\n<\/ul>\n<h4>2. &#064;Lazy \u5ef6\u8fdf\u6ce8\u5165&#xff08;\u4fb5\u5165\u6027\u4f4e&#xff0c;\u63a8\u8350\u4f18\u5148\u5c1d\u8bd5&#xff09;<\/h4>\n<p>\u9002\u7528\u573a\u666f&#xff1a;\u7b80\u5355\u7684\u53cc\u5411\u4f9d\u8d56&#xff0c;\u4e0d\u9700\u8981\u5728\u521d\u59cb\u5316\u65f6\u7acb\u5373\u4f7f\u7528\u4f9d\u8d56\u5bf9\u8c61<\/p>\n<p>\u5b9e\u73b0\u65b9\u5f0f&#xff1a;<\/p>\n<p><span class=\"token annotation punctuation\">&#064;Service<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DictionaryDataServiceImpl<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">DictionaryDataService<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Lazy<\/span>  <span class=\"token comment\">\/\/ \u5ef6\u8fdf\u52a0\u8f7d&#xff0c;\u6253\u7834\u5faa\u73af\u4f9d\u8d56<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Resource<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">DictionaryService<\/span> dictionaryService<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">someMethod<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u53ea\u6709\u5728\u771f\u6b63\u8c03\u7528\u65f6\u624d\u4f1a\u521d\u59cb\u5316 dictionaryService<\/span><br \/>\n        <span class=\"token class-name\">Dictionary<\/span> dict <span class=\"token operator\">&#061;<\/span> dictionaryService<span class=\"token punctuation\">.<\/span><span class=\"token function\">getById<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/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 annotation punctuation\">&#064;Service<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DictionaryServiceImpl<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">DictionaryService<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Resource<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">DictionaryDataService<\/span> dictionaryDataService<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u4fdd\u6301\u6b63\u5e38\u6ce8\u5165<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u4e1a\u52a1\u903b\u8f91&#8230;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u5de5\u4f5c\u539f\u7406&#xff1a;<\/p>\n<ul>\n<li>&#064;Lazy \u6ce8\u5165\u7684\u662f\u4e00\u4e2a\u4ee3\u7406\u5bf9\u8c61&#xff0c;\u800c\u975e\u771f\u5b9e\u7684bean<\/li>\n<li>\u53ea\u6709\u5728\u7b2c\u4e00\u6b21\u8c03\u7528\u65b9\u6cd5\u65f6&#xff0c;\u624d\u4f1a\u89e6\u53d1\u771f\u5b9ebean\u7684\u521b\u5efa<\/li>\n<li>\u4ece\u800c\u907f\u5f00\u4e86\u542f\u52a8\u65f6\u7684\u5faa\u73af\u4f9d\u8d56\u68c0\u67e5<\/li>\n<\/ul>\n<p>\u4f18\u70b9&#xff1a;<\/p>\n<ul>\n<li>\u4ee3\u7801\u4fb5\u5165\u6027\u5c0f<\/li>\n<li>\u4fdd\u6301\u4e86\u4f9d\u8d56\u6ce8\u5165\u7684\u4fbf\u5229\u6027<\/li>\n<li>\u7b26\u5408Spring\u7684\u8bbe\u8ba1\u7406\u5ff5<\/li>\n<\/ul>\n<p>\u7f3a\u70b9&#xff1a;<\/p>\n<ul>\n<li>\u9996\u6b21\u8c03\u7528\u65f6\u6027\u80fd\u7565\u6709\u635f\u5931<\/li>\n<li>\u9700\u8981\u660e\u786e\u54ea\u4e2a\u4f9d\u8d56\u4f7f\u7528&#064;Lazy<\/li>\n<\/ul>\n<h4>3. \u624b\u52a8\u4ece\u5bb9\u5668\u83b7\u53d6&#xff08;ApplicationContextAware&#xff0c;\u4fb5\u5165\u6027\u4e2d\u7b49&#xff09;<\/h4>\n<p>\u9002\u7528\u573a\u666f&#xff1a;\u9700\u8981\u66f4\u7075\u6d3b\u7684\u4f9d\u8d56\u83b7\u53d6\u65b9\u5f0f&#xff0c;\u6216\u8005\u4f9d\u8d56\u5173\u7cfb\u6bd4\u8f83\u590d\u6742<\/p>\n<p>\u5b9e\u73b0\u65b9\u5f0f\u4e00&#xff1a;ApplicationContextAware\u63a5\u53e3<\/p>\n<p><span class=\"token annotation punctuation\">&#064;Service<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DictionaryDataServiceImpl<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">DictionaryDataService<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">ApplicationContextAware<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">ApplicationContext<\/span> applicationContext<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">DictionaryService<\/span> dictionaryService<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">setApplicationContext<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">ApplicationContext<\/span> applicationContext<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>applicationContext <span class=\"token operator\">&#061;<\/span> applicationContext<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">DictionaryService<\/span> <span class=\"token function\">getDictionaryService<\/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>dictionaryService <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            dictionaryService <span class=\"token operator\">&#061;<\/span> applicationContext<span class=\"token punctuation\">.<\/span><span class=\"token function\">getBean<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">DictionaryService<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/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> dictionaryService<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">someMethod<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">Dictionary<\/span> dict <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">getDictionaryService<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getById<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/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>\u5b9e\u73b0\u65b9\u5f0f\u4e8c&#xff1a;SpringContextHolder\u5de5\u5177\u7c7b<\/p>\n<p><span class=\"token comment\">\/\/ \u5de5\u5177\u7c7b<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;Component<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">SpringContextHolder<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">ApplicationContextAware<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token class-name\">ApplicationContext<\/span> context<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">setApplicationContext<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">ApplicationContext<\/span> applicationContext<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        context <span class=\"token operator\">&#061;<\/span> applicationContext<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">T<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token class-name\">T<\/span> <span class=\"token function\">getBean<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Class<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">T<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> beanClass<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> context<span class=\"token punctuation\">.<\/span><span class=\"token function\">getBean<\/span><span class=\"token punctuation\">(<\/span>beanClass<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">T<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token class-name\">T<\/span> <span class=\"token function\">getBean<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> beanName<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Class<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">T<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> beanClass<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> context<span class=\"token punctuation\">.<\/span><span class=\"token function\">getBean<\/span><span class=\"token punctuation\">(<\/span>beanName<span class=\"token punctuation\">,<\/span> beanClass<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\">\/\/ \u4e1a\u52a1\u7c7b\u4f7f\u7528<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;Service<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DictionaryDataServiceImpl<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">DictionaryDataService<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">someMethod<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">DictionaryService<\/span> dictionaryService <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">SpringContextHolder<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getBean<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">DictionaryService<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">Dictionary<\/span> dict <span class=\"token operator\">&#061;<\/span> dictionaryService<span class=\"token punctuation\">.<\/span><span class=\"token function\">getById<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/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>\u4f18\u70b9&#xff1a;<\/p>\n<ul>\n<li>\u5b8c\u5168\u907f\u514d\u4e86\u5faa\u73af\u4f9d\u8d56<\/li>\n<li>\u53ef\u4ee5\u52a8\u6001\u83b7\u53d6bean<\/li>\n<li>\u9002\u5408\u590d\u6742\u7684\u4f9d\u8d56\u573a\u666f<\/li>\n<\/ul>\n<p>\u7f3a\u70b9&#xff1a;<\/p>\n<ul>\n<li>\u5931\u53bb\u4e86\u4f9d\u8d56\u6ce8\u5165\u7684\u4fbf\u5229\u6027<\/li>\n<li>\u4ee3\u7801\u53ef\u8bfb\u6027\u7a0d\u5dee<\/li>\n<li>\u589e\u52a0\u4e86\u4e0eSpring\u6846\u67b6\u7684\u8026\u5408<\/li>\n<\/ul>\n<h4>4. \u63a5\u53e3\u9694\u79bb \/ \u4e2d\u95f4\u5c42\u89e3\u8026&#xff08;\u4fb5\u5165\u6027\u9ad8&#xff0c;\u63a8\u8350\u957f\u671f\u65b9\u6848&#xff09;<\/h4>\n<p>\u9002\u7528\u573a\u666f&#xff1a;\u91cd\u6784\u73b0\u6709\u67b6\u6784&#xff0c;\u4ece\u6839\u672c\u4e0a\u89e3\u51b3\u5faa\u73af\u4f9d\u8d56\u95ee\u9898<\/p>\n<p>\u65b9\u6848\u4e00&#xff1a;\u63d0\u53d6\u516c\u5171\u670d\u52a1<\/p>\n<p><span class=\"token comment\">\/\/ \u63d0\u53d6\u516c\u5171\u903b\u8f91\u5230\u65b0\u7684\u670d\u52a1<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;Service<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DictionaryCommonService<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Resource<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">DictionaryMapper<\/span> dictionaryMapper<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Resource<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">DictionaryDataMapper<\/span> dictionaryDataMapper<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">Dictionary<\/span> <span class=\"token function\">findDictionaryById<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Integer<\/span> id<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> dictionaryMapper<span class=\"token punctuation\">.<\/span><span class=\"token function\">selectById<\/span><span class=\"token punctuation\">(<\/span>id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">DictionaryData<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token function\">findDatasByDictId<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Integer<\/span> dictId<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> dictionaryDataMapper<span class=\"token punctuation\">.<\/span><span class=\"token function\">selectByDictId<\/span><span class=\"token punctuation\">(<\/span>dictId<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\">\/\/ \u91cd\u6784\u540e\u7684\u670d\u52a1<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;Service<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DictionaryServiceImpl<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">DictionaryService<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Resource<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">DictionaryCommonService<\/span> dictionaryCommonService<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">JsonResult<\/span> <span class=\"token function\">articleTypeList<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u4f7f\u7528\u516c\u5171\u670d\u52a1<\/span><br \/>\n        <span class=\"token class-name\">Dictionary<\/span> dict <span class=\"token operator\">&#061;<\/span> dictionaryCommonService<span class=\"token punctuation\">.<\/span><span class=\"token function\">findDictionaryById<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">DictionaryData<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> dataList <span class=\"token operator\">&#061;<\/span> dictionaryCommonService<span class=\"token punctuation\">.<\/span><span class=\"token function\">findDatasByDictId<\/span><span class=\"token punctuation\">(<\/span>dict<span class=\"token punctuation\">.<\/span><span class=\"token function\">getDictId<\/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 comment\">\/\/ \u5904\u7406\u903b\u8f91&#8230;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token annotation punctuation\">&#064;Service<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DictionaryDataServiceImpl<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">DictionaryDataService<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Resource<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">DictionaryCommonService<\/span> dictionaryCommonService<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u4e1a\u52a1\u903b\u8f91\u4f7f\u7528\u516c\u5171\u670d\u52a1<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u65b9\u6848\u4e8c&#xff1a;\u63a5\u53e3\u9694\u79bb\u539f\u5219<\/p>\n<p><span class=\"token comment\">\/\/ \u5b9a\u4e49\u6700\u5c0f\u5316\u63a5\u53e3<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">interface<\/span> <span class=\"token class-name\">DictionaryQueryService<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token class-name\">Dictionary<\/span> <span class=\"token function\">getById<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Integer<\/span> id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">interface<\/span> <span class=\"token class-name\">DictionaryDataQueryService<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">DictionaryData<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token function\">getByDictId<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Integer<\/span> dictId<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u5b9e\u73b0\u7c7b\u53ea\u4f9d\u8d56\u9700\u8981\u7684\u63a5\u53e3<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;Service<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DictionaryServiceImpl<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">DictionaryService<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">DictionaryQueryService<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Resource<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">DictionaryDataQueryService<\/span> dictionaryDataQueryService<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u5b9e\u73b0\u903b\u8f91&#8230;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token annotation punctuation\">&#064;Service<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DictionaryDataServiceImpl<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">DictionaryDataService<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">DictionaryDataQueryService<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Resource<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">DictionaryQueryService<\/span> dictionaryQueryService<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u5b9e\u73b0\u903b\u8f91&#8230;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u4f18\u70b9&#xff1a;<\/p>\n<ul>\n<li>\u4ece\u6839\u672c\u4e0a\u89e3\u51b3\u4e86\u8bbe\u8ba1\u95ee\u9898<\/li>\n<li>\u63d0\u9ad8\u4e86\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027<\/li>\n<li>\u7b26\u5408SOLID\u539f\u5219<\/li>\n<li>\u964d\u4f4e\u4e86\u6a21\u5757\u95f4\u7684\u8026\u5408\u5ea6<\/li>\n<\/ul>\n<p>\u7f3a\u70b9&#xff1a;<\/p>\n<ul>\n<li>\u9700\u8981\u5927\u91cf\u7684\u4ee3\u7801\u91cd\u6784<\/li>\n<li>\u53ef\u80fd\u6d89\u53ca\u4e1a\u52a1\u903b\u8f91\u7684\u8c03\u6574<\/li>\n<li>\u77ed\u671f\u5185\u5de5\u4f5c\u91cf\u8f83\u5927<\/li>\n<\/ul>\n<h4>5. \u4e8b\u4ef6\u9a71\u52a8&#xff08;ApplicationEvent&#xff0c;\u4fb5\u5165\u6027\u4e2d\u7b49&#xff0c;\u9002\u5408\u901a\u77e5\u573a\u666f&#xff09;<\/h4>\n<p>\u9002\u7528\u573a\u666f&#xff1a;\u4e00\u4e2a\u670d\u52a1\u9700\u8981\u901a\u77e5\u53e6\u4e00\u4e2a\u670d\u52a1\u6267\u884c\u67d0\u4e9b\u64cd\u4f5c<\/p>\n<p>\u5b9e\u73b0\u65b9\u5f0f&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ \u5b9a\u4e49\u4e8b\u4ef6<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DictionaryDataChangeEvent<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">ApplicationEvent<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">final<\/span> <span class=\"token class-name\">String<\/span> dictCode<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">DictionaryDataChangeEvent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Object<\/span> source<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">String<\/span> dictCode<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">super<\/span><span class=\"token punctuation\">(<\/span>source<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>dictCode <span class=\"token operator\">&#061;<\/span> dictCode<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">String<\/span> <span class=\"token function\">getDictCode<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> dictCode<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\">\/\/ \u4e8b\u4ef6\u53d1\u5e03\u8005<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;Service<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DictionaryDataServiceImpl<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">DictionaryDataService<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Resource<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">ApplicationEventPublisher<\/span> eventPublisher<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">boolean<\/span> <span class=\"token function\">save<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">DictionaryData<\/span> entity<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">boolean<\/span> success <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">super<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">save<\/span><span class=\"token punctuation\">(<\/span>entity<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>success<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token comment\">\/\/ \u53d1\u5e03\u4e8b\u4ef6\u800c\u4e0d\u662f\u76f4\u63a5\u8c03\u7528\u5176\u4ed6\u670d\u52a1<\/span><br \/>\n            eventPublisher<span class=\"token punctuation\">.<\/span><span class=\"token function\">publishEvent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">DictionaryDataChangeEvent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">,<\/span> entity<span class=\"token punctuation\">.<\/span><span class=\"token function\">getDictCode<\/span><span class=\"token punctuation\">(<\/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> success<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\">\/\/ \u4e8b\u4ef6\u76d1\u542c\u8005<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;Service<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DictionaryServiceImpl<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">DictionaryService<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;EventListener<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">handleDictionaryDataChange<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">DictionaryDataChangeEvent<\/span> event<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u5904\u7406\u5b57\u5178\u6570\u636e\u53d8\u66f4\u540e\u7684\u903b\u8f91<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> dictCode <span class=\"token operator\">&#061;<\/span> event<span class=\"token punctuation\">.<\/span><span class=\"token function\">getDictCode<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u6e05\u9664\u7f13\u5b58\u3001\u66f4\u65b0\u72b6\u6001\u7b49<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token 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