{"id":113603,"date":"2026-10-06T22:49:32","date_gmt":"2026-10-06T14:49:32","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/113603.html"},"modified":"2026-10-06T22:49:32","modified_gmt":"2026-10-06T14:49:32","slug":"validx-vs-google-guava-preconditions%ef%bc%9a%e9%aa%8c%e8%af%81-vs-%e6%96%ad%e8%a8%80","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/113603.html","title":{"rendered":"ValidX vs Google Guava Preconditions\uff1a\u9a8c\u8bc1 vs \u65ad\u8a00"},"content":{"rendered":"<h2>ValidX vs Google Guava Preconditions&#xff1a;\u9a8c\u8bc1 vs \u65ad\u8a00<\/h2>\n<h3>&#x1f4cb; \u76ee\u5f55<\/h3>\n<ul>\n<li>\u6982\u8ff0<\/li>\n<li>\u5feb\u901f\u5bf9\u6bd4\u8868<\/li>\n<li>\u4e00\u3001\u6838\u5fc3\u54f2\u5b66&#xff1a;\u65ad\u8a00 vs \u9a8c\u8bc1<\/li>\n<li>\u4e8c\u3001API \u5f62\u6001\u5bf9\u6bd4<\/li>\n<li>\u4e09\u3001\u5931\u8d25\u65b9\u5f0f&#xff1a;\u5f02\u5e38\u4e2d\u65ad vs \u9519\u8bef\u6536\u96c6<\/li>\n<li>\u56db\u3001\u7a7a\u503c\u8bed\u4e49\u5bf9\u6bd4<\/li>\n<li>\u4e94\u3001\u6d88\u606f\u4e0e\u56fd\u9645\u5316<\/li>\n<li>\u516d\u3001\u6027\u80fd\u4e0e\u4f9d\u8d56<\/li>\n<li>\u4e03\u3001\u5b9e\u6218\u5bf9\u7167&#xff1a;\u540c\u4e00\u4e2a\u6ce8\u518c\u63a5\u53e3<\/li>\n<li>\u516b\u3001\u534f\u4f5c&#xff1a;\u4ec0\u4e48\u65f6\u5019\u7528\u8c01<\/li>\n<li>\u4f7f\u7528\u573a\u666f\u5efa\u8bae<\/li>\n<li>\u603b\u7ed3<\/li>\n<\/ul>\n<hr \/>\n<h3>\u6982\u8ff0<\/h3>\n<p>\u5728 Java \u4e16\u754c\u91cc&#xff0c;&#034;\u5148\u68c0\u67e5\u3001\u518d\u6267\u884c&#034;\u51e0\u4e4e\u662f\u6bcf\u4e2a\u65b9\u6cd5\u7684\u7b2c\u4e00\u884c\u3002\u8fd9\u4ef6\u4e8b\u6709\u4e24\u4e2a\u4e3b\u6d41\u5de5\u5177&#xff1a;<\/p>\n<ul>\n<li>Google Guava Preconditions&#xff1a;com.google.common.base.Preconditions&#xff0c;\u63d0\u4f9b checkArgument\u3001checkNotNull\u3001checkState \u7b49\u9759\u6001\u65b9\u6cd5&#xff0c;\u6761\u4ef6\u4e0d\u6ee1\u8db3\u7acb\u523b\u629b\u5f02\u5e38&#xff1b;<\/li>\n<li>ValidX&#xff1a;\u4e00\u4e2a\u9762\u5411\u4e2d\u56fd\u4e1a\u52a1\u573a\u666f\u7684\u5f00\u6e90\u9a8c\u8bc1\u5e93&#xff0c;\u65e2\u63d0\u4f9b &#064;NotBlank \u8fd9\u7c7b\u6ce8\u89e3&#xff0c;\u4e5f\u63d0\u4f9b ValidX.init() \u94fe\u5f0f API&#xff0c;\u6761\u4ef6\u4e0d\u6ee1\u8db3\u6536\u96c6\u9519\u8bef&#xff0c;\u7531\u4e1a\u52a1\u51b3\u5b9a\u5982\u4f55\u5904\u7406\u3002<\/li>\n<\/ul>\n<p>\u4e24\u8005\u90fd\u505a&#034;\u524d\u7f6e\u68c0\u67e5&#034;&#xff0c;\u4f46\u54f2\u5b66\u622a\u7136\u4e0d\u540c\u2014\u2014\u8fd9\u6b63\u662f\u672c\u6587\u6807\u9898&#034;\u9a8c\u8bc1 vs \u65ad\u8a00&#034;\u8981\u8bb2\u6e05\u695a\u7684\u4e8b&#xff1a;Guava \u662f\u65ad\u8a00&#xff0c;ValidX \u662f\u9a8c\u8bc1\u3002\u65ad\u8a00\u7ba1\u7684\u662f&#034;\u6211\u7684\u4ee3\u7801\u5047\u8bbe\u9519\u4e86&#034;&#xff08;\u5f00\u53d1\u8005\u8fdd\u7ea6&#xff09;&#xff0c;\u9a8c\u8bc1\u7ba1\u7684\u662f&#034;\u7528\u6237\u7ed9\u7684\u6570\u636e\u4e0d\u5408\u6cd5&#034;&#xff08;\u8f93\u5165\u4e0d\u5408\u683c&#xff09;\u3002\u641e\u6df7\u5b83\u4eec&#xff0c;\u4ee3\u7801\u4f1a\u53d8\u5f97\u8981\u4e48\u8fc7\u5ea6\u9632\u5fa1\u3001\u8981\u4e48\u5bf9\u7528\u6237\u8f93\u5165\u6beb\u65e0\u62db\u67b6\u3002<\/p>\n<hr \/>\n<h3>\u5feb\u901f\u5bf9\u6bd4\u8868<\/h3>\n<table>\n<tr>\u7ef4\u5ea6Guava PreconditionsValidX \u94fe\u5f0f API<\/tr>\n<tbody>\n<tr>\n<td>\u5b9a\u4f4d<\/td>\n<td>\u7f16\u7a0b\u5951\u7ea6 \/ \u524d\u7f6e\u6761\u4ef6\u65ad\u8a00<\/td>\n<td>\u4e1a\u52a1\u6570\u636e \/ \u7528\u6237\u8f93\u5165\u9a8c\u8bc1<\/td>\n<\/tr>\n<tr>\n<td>\u5931\u8d25\u65b9\u5f0f<\/td>\n<td>\u629b\u5f02\u5e38&#xff08;fail-fast&#xff09;<\/td>\n<td>\u6536\u96c6\u9519\u8bef&#xff0c;\u8fd4\u56de List&lt;String&gt;<\/td>\n<\/tr>\n<tr>\n<td>\u5f02\u5e38\u7c7b\u578b<\/td>\n<td>IllegalArgumentException \/ NPE \/ IllegalStateException \/ IndexOutOfBoundsException<\/td>\n<td>\u4e0d\u629b&#xff08;\u53ef\u7531\u8c03\u7528\u65b9\u81ea\u884c throw ValidationException&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u6d88\u606f\u53d7\u4f17<\/td>\n<td>\u5f00\u53d1\u8005&#xff08;\u8c03\u8bd5\u5b9a\u4f4d&#xff09;<\/td>\n<td>\u6700\u7ec8\u7528\u6237&#xff08;\u53ef\u76f4\u63a5\u5c55\u793a&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u6d88\u606f\u6a21\u677f<\/td>\n<td>%s \u5360\u4f4d\u7b26<\/td>\n<td>8 \u79cd\u8bed\u8a00 &#043; \u5b57\u6bb5\u6807\u7b7e<\/td>\n<\/tr>\n<tr>\n<td>\u7a7a\u503c\u8bed\u4e49<\/td>\n<td>checkNotNull&#xff1a;null \u5373\u5931\u8d25<\/td>\n<td>\u9ed8\u8ba4\u653e\u884c&#xff0c;notNull()\/notEmpty() \u6309\u9700\u6536\u7d27<\/td>\n<\/tr>\n<tr>\n<td>\u6279\u91cf\u6821\u9a8c<\/td>\n<td>\u4e00\u6b21\u53ea\u80fd\u65ad\u4e00\u4e2a\u6761\u4ef6<\/td>\n<td>\u4e00\u6761\u94fe\u6821\u9a8c\u591a\u4e2a\u5b57\u6bb5&#xff0c;\u9519\u8bef\u7d2f\u79ef<\/td>\n<\/tr>\n<tr>\n<td>\u53ef\u8bfb\u6027<\/td>\n<td>\u8fde\u7eed if &#043; \u591a\u884c checkArgument<\/td>\n<td>\u58f0\u660e\u5f0f\u94fe\u5f0f\u8c03\u7528<\/td>\n<\/tr>\n<tr>\n<td>\u9002\u7528\u5c42<\/td>\n<td>\u5e93\u5185\u90e8 \/ \u65b9\u6cd5\u8fb9\u754c\u9632\u5fa1<\/td>\n<td>Controller \/ Service \u5165\u53e3\u3001\u6279\u91cf\u5bfc\u5165<\/td>\n<\/tr>\n<tr>\n<td>\u4f9d\u8d56<\/td>\n<td>\u6574\u4e2a Guava&#xff08;\u542b\u5927\u91cf\u65e0\u5173\u7c7b&#xff09;<\/td>\n<td>ValidX \u5355\u4e00\u4f9d\u8d56<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h3>\u4e00\u3001\u6838\u5fc3\u54f2\u5b66&#xff1a;\u65ad\u8a00 vs \u9a8c\u8bc1<\/h3>\n<h4>1.1 \u65ad\u8a00&#xff08;Guava&#xff09;&#xff1a;\u5047\u8bbe\u9519\u4e86&#xff0c;\u7a0b\u5e8f\u5c31\u522b\u8dd1\u4e86<\/h4>\n<p>Preconditions.checkArgument \u7684\u9690\u542b\u8bed\u4e49\u662f&#xff1a;\u8fd9\u4e2a\u6761\u4ef6\u5fc5\u987b\u4e3a\u771f&#xff0c;\u5982\u679c\u4e3a\u5047&#xff0c;\u8bf4\u660e\u8c03\u7528\u65b9\u8fdd\u53cd\u4e86\u7ea6\u5b9a&#xff0c;\u5373\u7a0b\u5e8f\u6709 bug\u3002\u6240\u4ee5\u5b83\u9009\u62e9 fail-fast\u2014\u2014\u7acb\u523b\u629b\u5f02\u5e38\u3001\u7acb\u523b\u505c\u6b62&#xff0c;\u628a\u95ee\u9898\u66b4\u9732\u5728\u6700\u9760\u8fd1\u6e90\u5934\u7684\u5730\u65b9\u3002<\/p>\n<p><span class=\"token comment\">\/\/ \u5e93\u7684\u5185\u90e8\u5b9e\u73b0&#xff1a;\u5047\u8bbe\u8c03\u7528\u65b9\u4f20\u4e86\u5408\u6cd5\u53c2\u6570<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token class-name\">BigDecimal<\/span> <span class=\"token function\">calculateInterest<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">BigDecimal<\/span> principal<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">double<\/span> rate<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">checkArgument<\/span><span class=\"token punctuation\">(<\/span>principal <span class=\"token operator\">!&#061;<\/span> <span class=\"token keyword\">null<\/span> <span class=\"token operator\">&amp;&amp;<\/span> principal<span class=\"token punctuation\">.<\/span><span class=\"token function\">signum<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u672c\u91d1\u4e0d\u80fd\u4e3a\u8d1f: %s&#034;<\/span><span class=\"token punctuation\">,<\/span> principal<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">checkArgument<\/span><span class=\"token punctuation\">(<\/span>rate <span class=\"token operator\">&gt;&#061;<\/span> <span class=\"token number\">0<\/span> <span class=\"token operator\">&amp;&amp;<\/span> rate <span class=\"token operator\">&lt;&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u5229\u7387\u5fc5\u987b\u5728 [0,1] \u533a\u95f4: %s&#034;<\/span><span class=\"token punctuation\">,<\/span> rate<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ &#8230; \u4ece\u8fd9\u91cc\u5f00\u59cb&#xff0c;\u5047\u8bbe\u524d\u63d0\u90fd\u6210\u7acb<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u201c\u65ad\u8a00\u5931\u8d25\u201d \u2248 \u201c\u6211\u7684\u4ee3\u7801\u6709 bug\u201d\u2014\u2014\u8fd9\u662f\u5f00\u53d1\u8005\u4e4b\u95f4\u7684\u5951\u7ea6\u3002<\/p>\n<h4>1.2 \u9a8c\u8bc1&#xff08;ValidX&#xff09;&#xff1a;\u6570\u636e\u4e0d\u5bf9&#xff0c;\u63d0\u793a\u7528\u6237\u6539<\/h4>\n<p>ValidX \u7684\u9690\u542b\u8bed\u4e49\u662f&#xff1a;\u8fd9\u4e2a\u8f93\u5165\u6765\u81ea\u5916\u90e8&#xff08;\u7528\u6237\u3001\u4e0a\u6e38\u7cfb\u7edf\u3001\u6587\u4ef6\u5bfc\u5165&#xff09;&#xff0c;\u5b83\u4e0d\u5408\u6cd5\u662f\u5e38\u6001&#xff0c;\u9700\u8981\u88ab\u5f53\u6210\u4e1a\u52a1\u4e8b\u4ef6\u5904\u7406\u2014\u2014\u8981\u4e48\u8fd4\u56de\u9519\u8bef\u63d0\u793a\u8ba9\u7528\u6237\u91cd\u586b&#xff0c;\u8981\u4e48\u8bb0\u5f55\u65e5\u5fd7\u3001\u8df3\u8fc7\u8fd9\u4e00\u884c\u7ee7\u7eed\u5904\u7406\u3002<\/p>\n<p><span class=\"token comment\">\/\/ \u4e1a\u52a1\u5165\u53e3&#xff1a;\u9a8c\u8bc1\u7528\u6237\u63d0\u4ea4\u7684\u6570\u636e<\/span><br \/>\n<span class=\"token class-name\">ValidX<\/span> v <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">ValidX<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">field<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u624b\u673a\u53f7&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">notEmpty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">isChinesePhone<\/span><span class=\"token punctuation\">(<\/span>phone<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">field<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u90ae\u7bb1&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">notEmpty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">isEmail<\/span><span class=\"token punctuation\">(<\/span>email<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">field<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;QQ&#xff08;\u53ef\u9009&#xff09;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">allowNull<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">isQQ<\/span><span class=\"token punctuation\">(<\/span>qq<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>v<span class=\"token punctuation\">.<\/span><span class=\"token function\">passed<\/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\">\/\/ \u9519\u8bef\u7d2f\u79ef\u6210\u5217\u8868&#xff0c;\u4ea4\u7ed9 Controller \u8fd4\u56de\u7ed9\u524d\u7aef<\/span><br \/>\n    <span class=\"token keyword\">throw<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ValidationException<\/span><span class=\"token punctuation\">(<\/span>v<span class=\"token punctuation\">.<\/span><span class=\"token function\">getErrors<\/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><\/p>\n<p>\u201c\u9a8c\u8bc1\u5931\u8d25\u201d \u2248 \u201c\u7528\u6237\u8f93\u5165\u4e0d\u5408\u683c\u201d\u2014\u2014\u8fd9\u662f\u5e94\u7528\u4e0e\u7528\u6237\u4e4b\u95f4\u7684\u5951\u7ea6\u3002<\/p>\n<h4>1.3 \u4e00\u5f20\u56fe\u770b\u61c2\u533a\u522b<\/h4>\n<table>\n<tr>\u65ad\u8a00&#xff08;Guava&#xff09;\u9a8c\u8bc1&#xff08;ValidX&#xff09;<\/tr>\n<tbody>\n<tr>\n<td>\u95ee\u7684\u95ee\u9898<\/td>\n<td>\u201c\u6211\u7684\u4ee3\u7801\u5047\u8bbe\u9519\u4e86\u5417&#xff1f;\u201d<\/td>\n<td>\u201c\u7528\u6237\u7ed9\u7684\u6570\u636e\u5408\u6cd5\u5417&#xff1f;\u201d<\/td>\n<\/tr>\n<tr>\n<td>\u5931\u8d25\u7684\u542b\u4e49<\/td>\n<td>\u7a0b\u5e8f bug<\/td>\n<td>\u4e1a\u52a1\u4e8b\u4ef6<\/td>\n<\/tr>\n<tr>\n<td>\u5e94\u8be5\u600e\u4e48\u5904\u7406<\/td>\n<td>\u5d29\u6e83\u3001\u5c3d\u65e9\u66b4\u9732<\/td>\n<td>\u63d0\u793a\u3001\u91cd\u8bd5\u3001\u964d\u7ea7\u3001\u8df3\u8fc7<\/td>\n<\/tr>\n<tr>\n<td>\u6d88\u606f\u5199\u7ed9\u8c01<\/td>\n<td>\u5f00\u53d1\u8005<\/td>\n<td>\u6700\u7ec8\u7528\u6237<\/td>\n<\/tr>\n<tr>\n<td>\u5178\u578b\u573a\u666f<\/td>\n<td>\u5e93\u53c2\u6570\u9632\u5fa1\u3001\u72b6\u6001\u673a\u6821\u9a8c<\/td>\n<td>\u8868\u5355\u63d0\u4ea4\u3001API \u5165\u53c2\u3001Excel \u5bfc\u5165<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4e00\u53e5\u8bdd\u8bb0\u5fc6&#xff1a;\u65ad\u8a00\u5931\u8d25\u662f\u4f60\u7684\u95ee\u9898&#xff0c;\u9a8c\u8bc1\u5931\u8d25\u662f\u7528\u6237\u7684\u95ee\u9898\u3002<\/p>\n<hr \/>\n<h3>\u4e8c\u3001API \u5f62\u6001\u5bf9\u6bd4<\/h3>\n<h4>2.1 Guava&#xff1a;\u56db\u4e2a\u9759\u6001\u65b9\u6cd5\u6253\u5929\u4e0b<\/h4>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token import static\"><span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>google<span class=\"token punctuation\">.<\/span>common<span class=\"token punctuation\">.<\/span>base<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Preconditions<\/span><span class=\"token punctuation\">.<\/span><span class=\"token operator\">*<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u6761\u4ef6\u5fc5\u987b\u4e3a\u771f&#xff0c;\u5426\u5219 IllegalArgumentException<\/span><br \/>\n<span class=\"token function\">checkArgument<\/span><span class=\"token punctuation\">(<\/span>user<span class=\"token punctuation\">.<\/span><span class=\"token function\">getAge<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;&#061;<\/span> <span class=\"token number\">18<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u5e74\u9f84\u5fc5\u987b\u5927\u4e8e\u7b49\u4e8e 18&#xff1a;%s&#034;<\/span><span class=\"token punctuation\">,<\/span> user<span class=\"token punctuation\">.<\/span><span class=\"token function\">getAge<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u5f15\u7528\u4e0d\u80fd\u4e3a null&#xff0c;\u5426\u5219 NullPointerException&#xff08;\u8fd4\u56de\u539f\u5bf9\u8c61\u4fbf\u4e8e\u94fe\u5f0f&#xff09;<\/span><br \/>\n<span class=\"token class-name\">User<\/span> u <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">checkNotNull<\/span><span class=\"token punctuation\">(<\/span>user<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;user \u4e0d\u80fd\u4e3a null&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u72b6\u6001\u5fc5\u987b\u4e3a\u771f&#xff0c;\u5426\u5219 IllegalStateException<\/span><br \/>\n<span class=\"token function\">checkState<\/span><span class=\"token punctuation\">(<\/span>connection<span class=\"token punctuation\">.<\/span><span class=\"token function\">isOpen<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u8fde\u63a5\u672a\u6253\u5f00&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u4e0b\u6807\u5fc5\u987b\u5728 [0, size) \u5185&#xff0c;\u5426\u5219 IndexOutOfBoundsException<\/span><br \/>\n<span class=\"token function\">checkElementIndex<\/span><span class=\"token punctuation\">(<\/span>index<span class=\"token punctuation\">,<\/span> list<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;index&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h4>2.2 ValidX&#xff1a;\u4e00\u6761\u94fe\u641e\u5b9a\u591a\u4e2a\u5b57\u6bb5<\/h4>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">io<span class=\"token punctuation\">.<\/span>github<span class=\"token punctuation\">.<\/span>vipxieliang<span class=\"token punctuation\">.<\/span>validx<span class=\"token punctuation\">.<\/span>chain<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">ValidX<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token class-name\">ValidX<\/span> v <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">ValidX<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">field<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u624b\u673a\u53f7&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">notEmpty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">isChinesePhone<\/span><span class=\"token punctuation\">(<\/span>phone<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">field<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u8eab\u4efd\u8bc1&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">notEmpty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">isChineseIdCard<\/span><span class=\"token punctuation\">(<\/span>idCard<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">field<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u91d1\u989d&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">notNull<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">isIn<\/span><span class=\"token punctuation\">(<\/span>amount<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">String<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;USD&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;CNY&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">field<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;QQ&#xff08;\u53ef\u9009&#xff09;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">allowNull<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">isQQ<\/span><span class=\"token punctuation\">(<\/span>qq<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>v<span class=\"token punctuation\">.<\/span><span class=\"token function\">passed<\/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 class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>v<span class=\"token punctuation\">.<\/span><span class=\"token function\">getErrorMessage<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ &#034;\u624b\u673a\u53f7: &#8230;, \u8eab\u4efd\u8bc1: &#8230;&#034;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u6838\u5fc3\u5dee\u5f02&#xff1a;Guava \u662f&#034;\u4e00\u6b21\u4e00\u4e2a\u65ad\u8a00&#034;&#xff0c;N \u4e2a\u6761\u4ef6\u8981 N \u884c &#043; N \u4e2a\u5f02\u5e38\u5206\u652f&#xff1b;ValidX \u662f&#034;\u4e00\u6761\u94fe\u58f0\u660e\u5168\u90e8\u89c4\u5219&#034;&#xff0c;\u9519\u8bef\u81ea\u7136\u7d2f\u79ef&#xff0c;\u65e0\u9700\u9010\u4e2a catch\u3002<\/p>\n<hr \/>\n<h3>\u4e09\u3001\u5931\u8d25\u65b9\u5f0f&#xff1a;\u5f02\u5e38\u4e2d\u65ad vs \u9519\u8bef\u6536\u96c6<\/h3>\n<p>\u8fd9\u662f\u4e24\u8005\u6700\u76f4\u89c2\u7684\u5dee\u5f02&#xff0c;\u76f4\u63a5\u5f71\u54cd\u4ee3\u7801\u63a7\u5236\u6d41\u3002<\/p>\n<h4>3.1 Guava&#xff1a;\u629b\u5f02\u5e38 &#061; \u4e2d\u65ad\u6267\u884c<\/h4>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">transfer<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Account<\/span> from<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Account<\/span> <span class=\"token keyword\">to<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">BigDecimal<\/span> amount<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">checkArgument<\/span><span class=\"token punctuation\">(<\/span>amount <span class=\"token operator\">!&#061;<\/span> <span class=\"token keyword\">null<\/span> <span class=\"token operator\">&amp;&amp;<\/span> amount<span class=\"token punctuation\">.<\/span><span class=\"token function\">signum<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u8f6c\u8d26\u91d1\u989d\u5fc5\u987b\u4e3a\u6b63: %s&#034;<\/span><span class=\"token punctuation\">,<\/span> amount<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">checkState<\/span><span class=\"token punctuation\">(<\/span>from<span class=\"token punctuation\">.<\/span><span class=\"token function\">getBalance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">compareTo<\/span><span class=\"token punctuation\">(<\/span>amount<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u4f59\u989d\u4e0d\u8db3&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u8d70\u5230\u8fd9\u91cc&#xff0c;\u6240\u6709\u524d\u63d0\u90fd\u6210\u7acb&#xff0c;\u4e0d\u9700\u8981\u518d\u5224\u65ad<\/span><br \/>\n    from<span class=\"token punctuation\">.<\/span><span class=\"token function\">debit<\/span><span class=\"token punctuation\">(<\/span>amount<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">to<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">credit<\/span><span class=\"token punctuation\">(<\/span>amount<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u597d\u5904&#xff1a;\u540e\u7eed\u4ee3\u7801\u65e0\u9700\u4efb\u4f55 if&#xff0c;\u56e0\u4e3a\u524d\u63d0\u5df2\u5728\u5165\u53e3\u65ad\u8a00&#xff1b;\u574f\u5904&#xff1a;\u7b2c\u4e00\u4e2a\u5931\u8d25\u5373\u7ec8\u6b62&#xff0c;\u62ff\u4e0d\u5230\u5168\u90e8\u95ee\u9898\u3002<\/p>\n<h4>3.2 ValidX&#xff1a;\u6536\u96c6\u9519\u8bef &#061; \u4e00\u6b21\u544a\u8bc9\u4f60\u6240\u6709\u95ee\u9898<\/h4>\n<p><span class=\"token class-name\">ValidX<\/span> v <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">ValidX<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">field<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u7528\u6237\u540d&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">notEmpty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">isAlphaNumber<\/span><span class=\"token punctuation\">(<\/span>username<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">field<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u90ae\u7bb1&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">notEmpty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">isEmail<\/span><span class=\"token punctuation\">(<\/span>email<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">field<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u5bc6\u7801&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">notEmpty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">isPassword<\/span><span class=\"token punctuation\">(<\/span>password<span class=\"token punctuation\">,<\/span> <span class=\"token number\">8<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>v<span class=\"token punctuation\">.<\/span><span class=\"token function\">passed<\/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\">\/\/ \u4e09\u4e2a\u5b57\u6bb5\u7684\u95ee\u9898\u4e00\u6b21\u5168\u62ff\u5230<\/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\">String<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> errors <span class=\"token operator\">&#061;<\/span> v<span class=\"token punctuation\">.<\/span><span class=\"token function\">getErrors<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ [&#034;\u7528\u6237\u540d: \u503c\u4e0d\u80fd\u4e3a\u7a7a&#034;, &#034;\u90ae\u7bb1: \u90ae\u7bb1\u683c\u5f0f\u4e0d\u6b63\u786e&#034;, &#034;\u5bc6\u7801: \u957f\u5ea6\u5fc5\u987b\u57288\u523020\u4e4b\u95f4&#034;]<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u597d\u5904&#xff1a;\u4e00\u6b21\u4ea4\u4e92\u53cd\u9988\u5168\u90e8\u95ee\u9898&#xff08;\u5bf9\u7528\u6237\u4f53\u9a8c\u5c24\u5176\u91cd\u8981\u2014\u2014\u6ca1\u4eba\u60f3\u6539\u5b8c\u90ae\u7bb1\u53c8\u88ab\u544a\u77e5\u5bc6\u7801\u4e5f\u9519\u4e86&#xff09;&#xff1b;\u574f\u5904&#xff1a;\u9700\u8981\u663e\u5f0f\u5224\u65ad passed()\u3002<\/p>\n<h4>3.3 \u4ec0\u4e48\u65f6\u5019\u5f02\u5e38\u53cd\u800c\u66f4\u597d&#xff1f;<\/h4>\n<p>\u5f53&#034;\u6821\u9a8c\u5931\u8d25 &#061; \u7a0b\u5e8f bug&#034;\u65f6&#xff0c;\u5f02\u5e38&#xff08;\u65ad\u8a00&#xff09;\u5c31\u662f\u6b63\u786e\u7684\u9009\u62e9\u3002\u4e00\u4e2a\u5178\u578b\u53cd\u4f8b\u662f\u628a\u7528\u6237\u8f93\u5165\u6821\u9a8c\u5199\u6210 checkArgument\u2014\u2014\u4e00\u65e6\u629b\u9519&#xff0c;Spring \u9ed8\u8ba4\u8fd4\u56de 500 \u800c\u4e0d\u662f 400&#xff0c;\u524d\u7aef\u62ff\u5230\u7684\u662f&#034;\u670d\u52a1\u5668\u5185\u90e8\u9519\u8bef&#034;\u800c\u4e0d\u662f&#034;\u90ae\u7bb1\u683c\u5f0f\u4e0d\u5bf9&#034;\u3002\u9519\u8bef\u7684\u6570\u636e\u6d41\u5411\u9519\u8bef\u7684\u5904\u7406\u901a\u9053&#xff0c;\u662f\u65ad\u8a00\/\u9a8c\u8bc1\u6df7\u7528\u7684\u6700\u5927\u5751\u3002<\/p>\n<hr \/>\n<h3>\u56db\u3001\u7a7a\u503c\u8bed\u4e49\u5bf9\u6bd4<\/h3>\n<table>\n<tr>\u573a\u666fGuavaValidX<\/tr>\n<tbody>\n<tr>\n<td>\u4e0d\u5141\u8bb8 null<\/td>\n<td>checkNotNull(x, &#034;msg&#034;)<\/td>\n<td>.notNull().isXxx(x) \u6216\u5168\u5c40 GLOBAL_NOT_NULL<\/td>\n<\/tr>\n<tr>\n<td>\u4e0d\u5141\u8bb8 null \u548c\u7a7a\u4e32<\/td>\n<td>\u9700\u81ea\u5df1\u518d\u5199 checkArgument(!x.isEmpty())<\/td>\n<td>.notEmpty().isXxx(x)<\/td>\n<\/tr>\n<tr>\n<td>\u5141\u8bb8 null&#xff08;\u53ef\u9009\u5b57\u6bb5&#xff09;<\/td>\n<td>if (x !&#061; null) checkArgument(&#8230;)<\/td>\n<td>.allowNull().isXxx(x)&#xff08;\u9ed8\u8ba4\u884c\u4e3a&#xff09;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span class=\"token comment\">\/\/ Guava&#xff1a;\u53ef\u9009\u5b57\u6bb5\u8981\u624b\u52a8 if \u5305\u88f9<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>qq <span class=\"token operator\">!&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">checkArgument<\/span><span class=\"token punctuation\">(<\/span>qq<span class=\"token punctuation\">.<\/span><span class=\"token function\">matches<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;^[1-9]\\\\\\\\d{4,10}$&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;QQ \u683c\u5f0f\u4e0d\u6b63\u786e&#034;<\/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\">\/\/ ValidX&#xff1a;allowNull() \u58f0\u660e\u5f0f\u8868\u8fbe&#034;\u53ef\u9009&#034;<\/span><br \/>\n<span class=\"token class-name\">ValidX<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">field<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;QQ&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">allowNull<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">isQQ<\/span><span class=\"token punctuation\">(<\/span>qq<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u5173\u952e\u8ba4\u77e5&#xff1a;ValidX \u94fe\u5f0f\u6821\u9a8c\u9ed8\u8ba4\u5141\u8bb8 null\/\u7a7a&#xff08;\u56e0\u4e3a Map\/JSON \u4e2d\u5b57\u6bb5\u7f3a\u5931\u8fd4\u56de null \u662f\u5e38\u6001&#xff09;&#xff0c;\u5fc5\u987b\u7528 notNull()\/notEmpty() \u663e\u5f0f\u6536\u7d27&#xff1b;Guava \u5219\u662f&#034;\u9ed8\u8ba4\u4e25\u683c&#034;&#xff0c;checkNotNull \u662f\u6700\u9ad8\u9891\u65b9\u6cd5\u3002\u4e24\u8005\u65b9\u5411\u76f8\u53cd&#xff0c;\u8fc1\u79fb\u65f6\u6700\u5bb9\u6613\u8e29\u5751\u3002<\/p>\n<hr \/>\n<h3>\u4e94\u3001\u6d88\u606f\u4e0e\u56fd\u9645\u5316<\/h3>\n<table>\n<tr>GuavaValidX<\/tr>\n<tbody>\n<tr>\n<td>\u6a21\u677f<\/td>\n<td>&#034;\u4f59\u989d\u4e0d\u8db3: %s&#034;&#xff08;%s \u5360\u4f4d&#xff09;<\/td>\n<td>\u5185\u7f6e 8 \u79cd\u8bed\u8a00\u6d88\u606f<\/td>\n<\/tr>\n<tr>\n<td>\u5b57\u6bb5\u540d<\/td>\n<td>\u624b\u5199\u8fdb\u6a21\u677f<\/td>\n<td>.field(&#034;\u624b\u673a\u53f7&#034;) \u81ea\u52a8\u62fc\u8fdb\u9519\u8bef<\/td>\n<\/tr>\n<tr>\n<td>\u8bed\u8a00\u5207\u6362<\/td>\n<td>\u624b\u52a8<\/td>\n<td>withLocale(Locale.SIMPLIFIED_CHINESE) \u4e00\u884c\u5207\u6362<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span class=\"token comment\">\/\/ Guava&#xff1a;\u6d88\u606f\u9760\u624b\u5199&#xff0c;\u9762\u5411\u8c03\u8bd5<\/span><br \/>\n<span class=\"token function\">checkArgument<\/span><span class=\"token punctuation\">(<\/span>age <span class=\"token operator\">&gt;&#061;<\/span> <span class=\"token number\">18<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;age \u4e0d\u5408\u6cd5: %s&#034;<\/span><span class=\"token punctuation\">,<\/span> age<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ ValidX&#xff1a;\u5b57\u6bb5\u6807\u7b7e &#043; \u8bed\u8a00\u5207\u6362&#xff0c;\u9762\u5411\u7528\u6237<\/span><br \/>\n<span class=\"token class-name\">ValidX<\/span> v <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">ValidX<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">withLocale<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Locale<\/span><span class=\"token punctuation\">.<\/span><span class=\"token constant\">ENGLISH<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">field<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Age&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">notEmpty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">isAge<\/span><span class=\"token punctuation\">(<\/span>age<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">120<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>   <span class=\"token comment\">\/\/ \u9519\u8bef\u6d88\u606f\u81ea\u52a8\u4e3a\u82f1\u6587<\/span><\/p>\n<p>\u5bf9\u51fa\u6d77\u5e94\u7528\u6765\u8bf4&#xff0c;ValidX \u7684&#034;\u4e00\u5957\u6821\u9a8c\u89c4\u5219\u3001\u591a\u8bed\u8a00\u9519\u8bef\u6d88\u606f&#034;\u80fd\u7701\u6389\u5927\u91cf\u786c\u7f16\u7801\u6587\u6848\u3002<\/p>\n<hr \/>\n<h3>\u516d\u3001\u6027\u80fd\u4e0e\u4f9d\u8d56<\/h3>\n<ul>\n<li>Guava Preconditions&#xff1a;\u672c\u8eab\u662f\u7eaf\u9759\u6001\u65b9\u6cd5\u8c03\u7528&#xff0c;\u5f00\u9500\u6781\u5c0f&#xff1b;\u4f46\u4e3a\u4e86\u7528\u5b83\u5f15\u5165\u6574\u4e2a Guava&#xff08;\u6570 MB\u3001\u51e0\u5341\u4e2a\u6a21\u5757&#xff09;&#xff0c;\u5bf9\u53ea\u60f3\u8981&#034;\u51e0\u4e2a\u68c0\u67e5\u65b9\u6cd5&#034;\u7684\u9879\u76ee\u662f\u6740\u9e21\u7528\u725b\u5200\u3002\u8f7b\u91cf\u66ff\u4ee3&#xff1a;JDK \u81ea\u5e26 Objects.requireNonNull &#043; Objects.checkIndex&#xff08;Java 9&#043;&#xff09;\u3002<\/li>\n<li>ValidX \u94fe\u5f0f API&#xff1a;\u4e00\u6b21\u5b9e\u4f8b\u4e00\u4e2a\u6821\u9a8c\u5668&#xff0c;\u65e0\u53cd\u5c04&#xff08;\u6ce8\u89e3\u65b9\u5f0f\u624d\u6d89\u53ca\u53cd\u5c04&#xff09;&#xff0c;\u94fe\u5f0f\u573a\u666f\u5f00\u9500\u53ef\u5ffd\u7565&#xff1b;\u5355\u4e00\u4f9d\u8d56\u3001\u7ea6 300KB&#xff0c;\u4e14\u5185\u7f6e 100&#043; \u4e1a\u52a1\u9a8c\u8bc1\u5668&#xff08;\u8eab\u4efd\u8bc1\u3001\u624b\u673a\u53f7\u3001\u94f6\u884c\u5361\u2026\u2026&#xff09;\u2014\u2014\u8fd9\u662f Guava \u7ed9\u4e0d\u4e86\u7684\u3002<\/li>\n<\/ul>\n<p>\u6027\u80fd\u5efa\u8bae&#xff1a;\u4e24\u8005\u5728&#034;\u5224\u65ad\u4e00\u4e2a\u5e03\u5c14\u503c&#034;\u4e0a\u7684\u5f00\u9500\u90fd\u53ef\u5ffd\u7565&#xff0c;\u771f\u6b63\u7684\u6027\u80fd\u5dee\u5f02\u6765\u81ea\u5f15\u5165\u4e86\u591a\u5c11\u4f60\u6839\u672c\u7528\u4e0d\u4e0a\u7684\u4ee3\u7801\u3002<\/p>\n<hr \/>\n<h3>\u4e03\u3001\u5b9e\u6218\u5bf9\u7167&#xff1a;\u540c\u4e00\u4e2a\u6ce8\u518c\u63a5\u53e3<\/h3>\n<p>\u7528\u540c\u4e00\u4e2a&#034;\u7528\u6237\u6ce8\u518c&#034;\u573a\u666f&#xff0c;\u770b\u4e24\u79cd\u601d\u8def\u7684\u5b8c\u6574\u843d\u5730&#xff1a;<\/p>\n<h4>7.1 Guava \u5199\u6cd5&#xff1a;\u65ad\u8a00\u98ce\u683c<\/h4>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">register<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">UserDTO<\/span> dto<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u6bcf\u4e2a\u6761\u4ef6\u4e00\u4e2a\u65ad\u8a00&#xff0c;\u7b2c\u4e00\u4e2a\u5931\u8d25\u5373\u629b\u5f02\u5e38<\/span><br \/>\n    <span class=\"token function\">checkArgument<\/span><span class=\"token punctuation\">(<\/span>dto <span class=\"token operator\">!&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;dto \u4e0d\u80fd\u4e3a null&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">checkArgument<\/span><span class=\"token punctuation\">(<\/span>dto<span class=\"token punctuation\">.<\/span><span class=\"token function\">getUsername<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">!&#061;<\/span> <span class=\"token keyword\">null<\/span> <span class=\"token operator\">&amp;&amp;<\/span> <span class=\"token operator\">!<\/span>dto<span class=\"token punctuation\">.<\/span><span class=\"token function\">getUsername<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">isBlank<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;\u7528\u6237\u540d\u4e0d\u80fd\u4e3a\u7a7a&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">checkArgument<\/span><span class=\"token punctuation\">(<\/span>dto<span class=\"token punctuation\">.<\/span><span class=\"token function\">getEmail<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">!&#061;<\/span> <span class=\"token keyword\">null<\/span> <span class=\"token operator\">&amp;&amp;<\/span> <span class=\"token constant\">EMAIL_PATTERN<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">matcher<\/span><span class=\"token punctuation\">(<\/span>dto<span class=\"token punctuation\">.<\/span><span class=\"token function\">getEmail<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">matches<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;\u90ae\u7bb1\u683c\u5f0f\u4e0d\u6b63\u786e: %s&#034;<\/span><span class=\"token punctuation\">,<\/span> dto<span class=\"token punctuation\">.<\/span><span class=\"token function\">getEmail<\/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 function\">checkArgument<\/span><span class=\"token punctuation\">(<\/span>dto<span class=\"token punctuation\">.<\/span><span class=\"token function\">getPhone<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token keyword\">null<\/span> <span class=\"token operator\">||<\/span> <span class=\"token constant\">PHONE_PATTERN<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">matcher<\/span><span class=\"token punctuation\">(<\/span>dto<span class=\"token punctuation\">.<\/span><span class=\"token function\">getPhone<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">matches<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;\u624b\u673a\u53f7\u683c\u5f0f\u4e0d\u6b63\u786e: %s&#034;<\/span><span class=\"token punctuation\">,<\/span> dto<span class=\"token punctuation\">.<\/span><span class=\"token function\">getPhone<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    userService<span class=\"token punctuation\">.<\/span><span class=\"token function\">create<\/span><span class=\"token punctuation\">(<\/span>dto<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u95ee\u9898&#xff1a;\u7528\u6237\u6539\u5b8c\u7528\u6237\u540d&#xff0c;\u53c8\u88ab\u544a\u77e5\u90ae\u7bb1\u4e5f\u9519\u4e86&#xff08;\u4e00\u6b21\u53ea\u80fd\u62a5\u4e00\u4e2a\u9519&#xff09;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>7.2 ValidX \u5199\u6cd5&#xff1a;\u9a8c\u8bc1\u98ce\u683c<\/h4>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">register<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">UserDTO<\/span> dto<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token class-name\">ValidX<\/span> v <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">ValidX<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token punctuation\">.<\/span><span class=\"token function\">field<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u7528\u6237\u540d&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">notEmpty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">isAlphaNumber<\/span><span class=\"token punctuation\">(<\/span>dto<span class=\"token punctuation\">.<\/span><span class=\"token function\">getUsername<\/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 function\">field<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u90ae\u7bb1&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">notEmpty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">isEmail<\/span><span class=\"token punctuation\">(<\/span>dto<span class=\"token punctuation\">.<\/span><span class=\"token function\">getEmail<\/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 function\">field<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u624b\u673a\u53f7&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">allowNull<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">isChinesePhone<\/span><span class=\"token punctuation\">(<\/span>dto<span class=\"token punctuation\">.<\/span><span class=\"token function\">getPhone<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u53ef\u9009\u5b57\u6bb5<\/span><\/p>\n<p>    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>v<span class=\"token punctuation\">.<\/span><span class=\"token function\">passed<\/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\">\/\/ \u4e00\u6b21\u8fd4\u56de\u5168\u90e8\u9519\u8bef&#xff0c;\u76f4\u63a5\u62fc\u8fdb\u54cd\u5e94\u4f53<\/span><br \/>\n        <span class=\"token keyword\">throw<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ValidationException<\/span><span class=\"token punctuation\">(<\/span>v<span class=\"token punctuation\">.<\/span><span class=\"token function\">getErrors<\/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><\/p>\n<p>    userService<span class=\"token punctuation\">.<\/span><span class=\"token function\">create<\/span><span class=\"token punctuation\">(<\/span>dto<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u76f4\u89c2\u5dee\u5f02&#xff1a;<\/p>\n<ul>\n<li>Guava \u7248\u6bcf\u591a\u4e00\u4e2a\u5b57\u6bb5\u5c31\u8981\u591a\u5199\u4e00\u884c\u6b63\u5219 &#043; \u4e00\u4e2a\u5f02\u5e38&#xff1b;ValidX \u7248\u662f\u5b57\u6bb5\u6807\u7b7e &#043; \u73b0\u6210\u9a8c\u8bc1\u5668&#xff1b;<\/li>\n<li>\u624b\u673a\u53f7\/\u8eab\u4efd\u8bc1\u8fd9\u7c7b\u4e2d\u56fd\u4e1a\u52a1\u683c\u5f0f&#xff0c;Guava \u6ca1\u6709\u5185\u7f6e&#xff0c;\u5fc5\u987b\u624b\u5199\u6b63\u5219&#xff1b;ValidX \u76f4\u63a5 isChinesePhone\/isChineseIdCard&#xff1b;<\/li>\n<li>Guava \u4e00\u6b21\u53ea\u80fd\u62a5\u4e00\u4e2a\u9519&#xff0c;ValidX \u4e00\u6b21\u62a5\u5168\u90e8\u3002<\/li>\n<\/ul>\n<hr \/>\n<h3>\u516b\u3001\u534f\u4f5c&#xff1a;\u4ec0\u4e48\u65f6\u5019\u7528\u8c01<\/h3>\n<p>\u6b63\u786e\u7684\u59ff\u52bf\u4e0d\u662f\u4e8c\u9009\u4e00&#xff0c;\u800c\u662f\u5404\u53f8\u5176\u804c&#xff1a;<\/p>\n<table>\n<tr>\u5c42\u7ea7\u7528\u8c01\u539f\u56e0<\/tr>\n<tbody>\n<tr>\n<td>\u5e93 \/ \u5de5\u5177\u7c7b\u5185\u90e8\u53c2\u6570\u9632\u5fa1<\/td>\n<td>Guava checkArgument \/ checkNotNull<\/td>\n<td>\u8c03\u7528\u65b9\u662f\u5f00\u53d1\u8005&#xff0c;\u8fdd\u7ea6\u5373 bug&#xff0c;\u5e94 fail-fast<\/td>\n<\/tr>\n<tr>\n<td>\u72b6\u6001\u673a \/ \u4e0d\u53ef\u9006\u64cd\u4f5c\u524d\u7f6e<\/td>\n<td>Guava checkState<\/td>\n<td>&#034;\u72b6\u6001\u4e0d\u5bf9&#034;\u8bf4\u660e\u7a0b\u5e8f\u6d41\u8f6c\u51fa\u9519&#xff0c;\u662f bug<\/td>\n<\/tr>\n<tr>\n<td>Controller \/ Service \u5165\u53c2<\/td>\n<td>ValidX \u94fe\u5f0f \/ \u6ce8\u89e3<\/td>\n<td>\u8f93\u5165\u6765\u81ea\u7528\u6237&#xff0c;\u9700\u8981\u53cb\u597d\u3001\u805a\u5408\u7684\u9519\u8bef\u63d0\u793a<\/td>\n<\/tr>\n<tr>\n<td>\u6279\u91cf\u5bfc\u5165&#xff08;Excel\/CSV&#xff09;<\/td>\n<td>ValidX \u94fe\u5f0f<\/td>\n<td>\u9700\u8981&#034;\u8fd9\u884c\u6709\u95ee\u9898\u8df3\u8fc7&#xff0c;\u7ee7\u7eed\u5904\u7406\u4e0b\u4e00\u884c&#034;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u6df7\u5408\u4f7f\u7528\u793a\u4f8b&#xff1a;\u4e1a\u52a1\u5165\u53e3\u7528 ValidX \u9a8c\u8bc1\u7528\u6237\u8f93\u5165&#xff0c;\u901a\u8fc7\u540e\u8fdb\u5165\u5185\u90e8\u65b9\u6cd5\u7528 Guava \u65ad\u8a00\u5185\u90e8\u5951\u7ea6\u3002<\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">submitOrder<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">OrderRequest<\/span> req<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u7b2c\u4e00\u5c42&#xff1a;\u7528\u6237\u8f93\u5165\u9a8c\u8bc1&#xff08;ValidX&#xff0c;\u9519\u8bef\u8fd4\u56de\u7ed9\u524d\u7aef&#xff09;<\/span><br \/>\n    <span class=\"token class-name\">ValidX<\/span> v <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">ValidX<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token punctuation\">.<\/span><span class=\"token function\">field<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u5546\u54c1ID&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">notEmpty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">isAlphaNumber<\/span><span class=\"token punctuation\">(<\/span>req<span class=\"token punctuation\">.<\/span><span class=\"token function\">getProductId<\/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 function\">field<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6570\u91cf&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">notNull<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">isIn<\/span><span class=\"token punctuation\">(<\/span>req<span class=\"token punctuation\">.<\/span><span class=\"token function\">getQuantity<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">String<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;1&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;2&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;3&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;4&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;5&#034;<\/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><span class=\"token operator\">!<\/span>v<span class=\"token punctuation\">.<\/span><span class=\"token function\">passed<\/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\">throw<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ValidationException<\/span><span class=\"token punctuation\">(<\/span>v<span class=\"token punctuation\">.<\/span><span class=\"token function\">getErrors<\/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><\/p>\n<p>    <span class=\"token comment\">\/\/ \u7b2c\u4e8c\u5c42&#xff1a;\u5185\u90e8\u5951\u7ea6\u65ad\u8a00&#xff08;Guava&#xff0c;\u8fdd\u7ea6\u5373 bug&#xff09;<\/span><br \/>\n    <span class=\"token function\">checkState<\/span><span class=\"token punctuation\">(<\/span>inventory<span class=\"token punctuation\">.<\/span><span class=\"token function\">isLocked<\/span><span class=\"token punctuation\">(<\/span>req<span class=\"token punctuation\">.<\/span><span class=\"token function\">getProductId<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u5e93\u5b58\u672a\u9501\u5b9a&#xff0c;\u6d41\u7a0b\u72b6\u6001\u5f02\u5e38&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">checkArgument<\/span><span class=\"token punctuation\">(<\/span>orderService<span class=\"token punctuation\">.<\/span><span class=\"token function\">calcPrice<\/span><span class=\"token punctuation\">(<\/span>req<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">signum<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u8ba1\u7b97\u51fa\u7684\u4ef7\u683c\u975e\u6cd5&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    orderService<span class=\"token punctuation\">.<\/span><span class=\"token function\">submit<\/span><span class=\"token punctuation\">(<\/span>req<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<hr \/>\n<h3>\u4f7f\u7528\u573a\u666f\u5efa\u8bae<\/h3>\n<table>\n<tr>\u4f60\u7684\u573a\u666f\u63a8\u8350\u4e00\u53e5\u8bdd\u7406\u7531<\/tr>\n<tbody>\n<tr>\n<td>\u5199\u516c\u5171\u5e93 \/ SDK&#xff0c;\u9632\u5fa1\u975e\u6cd5\u53c2\u6570<\/td>\n<td>Guava checkArgument<\/td>\n<td>\u8c03\u7528\u65b9\u8fdd\u7ea6\u5373 bug&#xff0c;fail-fast \u6700\u5408\u9002<\/td>\n<\/tr>\n<tr>\n<td>Controller \u63a5\u6536\u7528\u6237\u8868\u5355\/JSON<\/td>\n<td>ValidX \u94fe\u5f0f\u6216\u6ce8\u89e3<\/td>\n<td>\u9519\u8bef\u8981\u805a\u5408\u3001\u8981\u53cb\u597d\u3001\u8981\u53ef\u591a\u8bed\u8a00<\/td>\n<\/tr>\n<tr>\n<td>\u6821\u9a8c\u4e2d\u56fd\u624b\u673a\u53f7\/\u8eab\u4efd\u8bc1\/\u94f6\u884c\u5361<\/td>\n<td>ValidX<\/td>\n<td>\u5185\u7f6e\u9a8c\u8bc1\u5668&#xff0c;\u4e0d\u7528\u624b\u5199\u6b63\u5219<\/td>\n<\/tr>\n<tr>\n<td>Excel \u6279\u91cf\u5bfc\u5165&#xff0c;\u884c\u7ea7\u5bb9\u9519<\/td>\n<td>ValidX \u94fe\u5f0f<\/td>\n<td>\u6536\u96c6\u5168\u90e8\u95ee\u9898\u884c&#xff0c;\u8df3\u8fc7\u7ee7\u7eed<\/td>\n<\/tr>\n<tr>\n<td>\u53ea\u9700\u8981&#034;\u975e\u7a7a &#043; \u4e0d\u8d8a\u754c&#034;<\/td>\n<td>JDK Objects.requireNonNull<\/td>\n<td>\u96f6\u4f9d\u8d56\u5373\u53ef&#xff0c;\u4e0d\u5fc5\u5f15\u5165\u4efb\u4f55\u5e93<\/td>\n<\/tr>\n<tr>\n<td>\u72b6\u6001\u673a \/ \u64cd\u4f5c\u524d\u7f6e\u6761\u4ef6<\/td>\n<td>Guava checkState<\/td>\n<td>&#034;\u72b6\u6001\u4e0d\u5bf9&#034;\u662f\u7a0b\u5e8f bug \u4fe1\u53f7<\/td>\n<\/tr>\n<tr>\n<td>\u6846\u67b6\u5185\u90e8 DTO \u81ea\u52a8\u6821\u9a8c<\/td>\n<td>ValidX \u6ce8\u89e3&#xff08;&#064;NotBlank \u7b49&#xff09;<\/td>\n<td>\u4e0e Bean Validation \u65e0\u7f1d\u96c6\u6210<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h3>\u603b\u7ed3<\/h3>\n<ul>\n<li>Guava Preconditions \u662f\u65ad\u8a00&#xff1a;\u9762\u5411\u5f00\u53d1\u8005\u5951\u7ea6&#xff0c;\u5931\u8d25\u5373\u629b\u5f02\u5e38&#xff08;fail-fast&#xff09;&#xff0c;\u6d88\u606f\u662f\u7ed9\u8c03\u8bd5\u770b\u7684\u3002\u5b83\u7684\u4ef7\u503c\u5728\u4e8e\u628a&#034;\u524d\u63d0\u6761\u4ef6&#034;\u538b\u7f29\u5230\u65b9\u6cd5\u5165\u53e3&#xff0c;\u8ba9\u540e\u7eed\u4ee3\u7801\u514d\u4e8e\u5224\u65ad\u3002<\/li>\n<li>ValidX \u662f\u9a8c\u8bc1&#xff1a;\u9762\u5411\u7528\u6237\u8f93\u5165&#xff0c;\u5931\u8d25\u6536\u96c6\u9519\u8bef&#xff08;\u53ef\u805a\u5408\u3001\u53ef\u591a\u8bed\u8a00\u3001\u53ef\u5e26\u5b57\u6bb5\u6807\u7b7e&#xff09;&#xff0c;\u6d88\u606f\u662f\u7ed9\u7528\u6237\u770b\u7684\u3002\u5b83\u7684\u4ef7\u503c\u5728\u4e8e\u7528\u58f0\u660e\u5f0f\u94fe\u5f0f API \u8986\u76d6\u4e2d\u56fd\u4e1a\u52a1\u573a\u666f\u7684\u6d77\u91cf\u683c\u5f0f\u89c4\u5219\u3002<\/li>\n<li>\u522b\u6df7\u7528&#xff1a;\u628a\u7528\u6237\u8f93\u5165\u6821\u9a8c\u5199\u6210 checkArgument&#xff0c;\u4f1a\u628a&#034;\u8f93\u5165\u4e0d\u5408\u6cd5&#034;\u8bef\u62a5\u6210&#034;\u670d\u52a1\u5668\u9519\u8bef&#034;&#xff1b;\u628a\u5185\u90e8\u5951\u7ea6\u5199\u6210\u4e1a\u52a1\u9a8c\u8bc1&#xff0c;\u53c8\u4f1a\u8ba9 bug \u88ab&#034;\u53cb\u597d\u63d0\u793a&#034;\u63a9\u76d6\u3002<\/li>\n<li>\u6700\u4f73\u5b9e\u8df5\u662f\u5206\u5c42\u534f\u4f5c&#xff1a;\u5165\u53e3\u7528 ValidX \u9a8c\u8bc1\u6570\u636e&#xff0c;\u5185\u90e8\u7528 Guava \u65ad\u8a00\u5951\u7ea6\u2014\u2014\u9a8c\u8bc1\u7ba1\u7528\u6237&#xff0c;\u65ad\u8a00\u7ba1\u81ea\u5df1\u3002<\/li>\n<\/ul>\n<p>\u5173\u8054\u9605\u8bfb&#xff1a;\u672c\u7cfb\u5217\u5bf9\u6bd4\u6587\u7ae0\u300aValidX vs Apache Commons Validator&#xff1a;\u529f\u80fd\u4e0e\u6027\u80fd\u5bf9\u6bd4\u300b\u300aValidX vs Hutool Validator&#xff1a;\u4e13\u4e1a\u6846\u67b6 vs \u5de5\u5177\u5e93\u300b&#xff0c;\u5e2e\u4f60\u628a ValidX \u653e\u8fdb\u6574\u4e2a Java \u9a8c\u8bc1\u751f\u6001\u4e2d\u9009\u578b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>ValidX vs Google Guava Preconditions&#xff1a;\u9a8c\u8bc1 vs \u65ad\u8a00<br \/>\n&#x1f4cb; \u76ee\u5f55<br \/>\n\u6982\u8ff0\u5feb\u901f\u5bf9\u6bd4\u8868\u4e00\u3001\u6838\u5fc3\u54f2\u5b66&#xff1a;\u65ad\u8a00 vs \u9a8c\u8bc1\u4e8c\u3001API \u5f62\u6001\u5bf9\u6bd4\u4e09\u3001\u5931\u8d25\u65b9\u5f0f&#xff1a;\u5f02\u5e38\u4e2d\u65ad vs \u9519\u8bef\u6536\u96c6\u56db\u3001\u7a7a\u503c\u8bed\u4e49\u5bf9\u6bd4\u4e94\u3001\u6d88\u606f\u4e0e\u56fd\u9645\u5316\u516d\u3001\u6027\u80fd\u4e0e\u4f9d\u8d56\u4e03\u3001\u5b9e\u6218\u5bf9\u7167&#xff1a;\u540c\u4e00\u4e2a\u6ce8\u518c\u63a5\u53e3\u516b\u3001\u534f\u4f5c&#xff1a;\u4ec0\u4e48\u65f6\u5019\u7528\u8c01\u4f7f\u7528\u573a\u666f\u5efa\u8bae\u603b\u7ed3 \u6982\u8ff0<br \/>\n\u5728 Java 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\/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ValidX vs Google Guava Preconditions\uff1a\u9a8c\u8bc1 vs \u65ad\u8a00 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"ValidX vs Google Guava Preconditions&#xff1a;\u9a8c\u8bc1 vs \u65ad\u8a00 &#x1f4cb; \u76ee\u5f55 \u6982\u8ff0\u5feb\u901f\u5bf9\u6bd4\u8868\u4e00\u3001\u6838\u5fc3\u54f2\u5b66&#xff1a;\u65ad\u8a00 vs \u9a8c\u8bc1\u4e8c\u3001API \u5f62\u6001\u5bf9\u6bd4\u4e09\u3001\u5931\u8d25\u65b9\u5f0f&#xff1a;\u5f02\u5e38\u4e2d\u65ad vs 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