{"id":30,"date":"2021-05-30T22:00:50","date_gmt":"2021-05-30T14:00:50","guid":{"rendered":"https:\/\/blog.xiaotao2333.top:344\/?p=30"},"modified":"2021-05-30T23:40:44","modified_gmt":"2021-05-30T15:40:44","slug":"springboot%e8%a1%a8%e5%8d%95%e9%aa%8c%e8%af%81%ef%bc%9a%e8%87%aa%e5%ae%9a%e4%b9%89%e6%b3%a8%e8%a7%a3%e5%92%8c%e5%8f%82%e6%95%b0%e9%aa%8c%e8%af%81%e5%99%a8","status":"publish","type":"post","link":"https:\/\/blog.xiaotao2333.top:344\/?p=30","title":{"rendered":"SpringBoot\u8868\u5355\u9a8c\u8bc1\uff1a\u81ea\u5b9a\u4e49\u6ce8\u89e3\u548c\u53c2\u6570\u9a8c\u8bc1\u5668"},"content":{"rendered":"<h1>SpringBoot\u8868\u5355\u9a8c\u8bc1\uff1a\u81ea\u5b9a\u4e49\u6ce8\u89e3\u548c\u53c2\u6570\u9a8c\u8bc1\u5668<\/h1>\n<h2>\u5e8f\u8a00<\/h2>\n<p>\u5728\u8fdb\u884cSpringBoot\u7684Web\u7a0b\u5e8f\u5f00\u53d1\u4e2d\uff0c\u5e38\u5e38\u9700\u8981\u5bf9\u5ba2\u6237\u7aef\u53d1\u8d77\u7684\u8bf7\u6c42\u4e2d\u7684\u8868\u5355\u53c2\u6570\u8fdb\u884c\u6709\u6548\u6027\u8ba4\u8bc1\uff0c\u80fd\u591f\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u786e\u4fdd\u7cfb\u7edf\u7684\u6b63\u5e38\u5b89\u5168\u8fd0\u884c\u548c\u907f\u514d\u610f\u5916\u60c5\u51b5\uff0c\u5982<\/p>\n<ul>\n<li>\u5f3a\u5236\u89c4\u5b9a\u5bc6\u7801\u957f\u5ea6\u4e0d\u5f97\u5c11\u4e8e6\u4f4d<\/li>\n<li>\u67d0\u4e2a\u53c2\u6570\u4e0d\u5141\u8bb8\u51fa\u73b0\u67d0\u4e9b\u7279\u6b8a\u5b57\u7b26<\/li>\n<li>\u6807\u8bc6\u67d0\u4e2a\u53c2\u6570\u503c\u6240\u9700\u7684\u6743\u9650\u7ea7\u522b\u548c\u5224\u65ad\u7528\u6237\u662f\u5426\u5177\u5907\u4f20\u5165\u8be5\u503c\u7684\u6743\u9650\uff08\u53c2\u6570\u52a8\u6001\u9274\u6743\uff09<\/li>\n<li>\u5224\u65ad\u4f20\u5165\u7684\u67d0\u4e2a\u53c2\u6570\u5728\u7cfb\u7edf\u4e2d\u662f\u5426\u4e3a\u6709\u6548\u7684\u8bb0\u5f55\u503c\uff08\u5982\uff0c\u6709\u6548\u4e14\u5b58\u5728\u7684\u6587\u7ae0\u7f16\u53f7\uff0c\u7528\u6237ID\uff0c\u8d44\u6e90\u7f16\u53f7\u7b49\uff09<\/li>\n<\/ul>\n<p>\u524d\u4e24\u8005\u7684\u60c5\u51b5\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u9879\u76ee\u4e2d\u96c6\u6210\u7684<code>hibernate-validator<\/code>\u4f7f\u7528<code>@Pattern<\/code>\u4f20\u5165\u5141\u8bb8\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u5c31\u80fd\u5b9e\u73b0\uff0c\u800c\u540e\u4e24\u8005\u5219\u7a0d\u5fae\u590d\u6742\u4e00\u4e9b\uff0c\u81ea\u5e26\u7684\u9a8c\u8bc1\u89c4\u5219\u5c31\u65e0\u6cd5\u6ee1\u8db3\u6211\u4eec\u7684\u9700\u6c42\u7684\uff0c\u9700\u8981\u6211\u4eec\u81ea\u5df1\u81ea\u5b9a\u4e49\u9a8c\u8bc1\u89c4\u5219\u3002<\/p>\n<p>\u4f7f\u7528\u81ea\u5b9a\u4e49\u6ce8\u89e3\u548c\u53c2\u6570\u9a8c\u8bc1\u5668\u7684\u4f18\u52bf\uff1a<\/p>\n<ol>\n<li>\u53c2\u6570\u5b89\u5168\u6821\u9a8c\u4ee3\u7801\u4e0e\u4e1a\u52a1\u4ee3\u7801\u89e3\u8026<\/li>\n<li>\u903b\u8f91\u590d\u7528\u65b9\u4fbf\u7b80\u5355<\/li>\n<\/ol>\n<h5>\u672c\u6587\u7684\u6f14\u793a\u76ee\u6807\u4e3a\u5229\u7528\u81ea\u5b9a\u4e49\u8868\u5355\u9a8c\u8bc1\u5668\u5b9e\u73b0\u63a7\u5236\u5668\u7684\u53c2\u6570\u52a8\u6001\u9274\u6743<\/h5>\n<h2>\u672c\u7bc7\u6587\u7ae0\u4f7f\u7528\u7684\u73af\u5883<\/h2>\n<ul>\n<li>JDK - 1.8.0_221<\/li>\n<li>SpringBoot - 2.4<\/li>\n<li>\u64cd\u4f5c\u7cfb\u7edf - Windows 10 20H2 64\u4f4d<\/li>\n<\/ul>\n<h2>\u7ec4\u4ef6\u4f9d\u8d56<\/h2>\n<p>\u8bf7\u786e\u4fdd\u9879\u76ee\u4f9d\u8d56\u4e2d\u5305\u542b\u4ee5\u4e0bstarter\u4f9d\u8d56<\/p>\n<pre><code class=\"language-xml\">&lt;dependency&gt;\n    &lt;groupId&gt;org.springframework.boot&lt;\/groupId&gt;\n    &lt;artifactId&gt;spring-boot-starter-validation&lt;\/artifactId&gt;\n    &lt;version&gt;2.4.5&lt;\/version&gt;\n    &lt;type&gt;pom&lt;\/type&gt;\n&lt;\/dependency&gt;<\/code><\/pre>\n<h2>\u8d77\u6b65\uff0cCoding\u8d70\u8d77<\/h2>\n<h3>\u7b2c\u4e00\u6b65\uff1a\u5148\u5b9a\u4e49\u6ce8\u89e3<\/h3>\n<pre><code class=\"language-java\">\/**\n * \u9a8c\u8bc1\u5f53\u524d\u7528\u6237\u662f\u5426\u5177\u6709\u64cd\u4f5c\u76ee\u6807\u7528\u6237ID\u7684\u6743\u9650\n * \u9664\u7ba1\u7406\u5458\u5916\uff0c\u6bcf\u4e2a\u7528\u6237\u53ea\u80fd\u64cd\u4f5c\u81ea\u5df1\u7684\u8d44\u6e90\uff08\u5373\u76ee\u6807\u8d44\u6e90\u7684UID\u6807\u8bc6\u4e3a\u5f53\u524d\u767b\u5f55\u7528\u6237ID\uff09\n *\/\n@Target({ElementType.PARAMETER, ElementType.FIELD}) \/\/ \u5141\u8bb8\u5728\u53c2\u6570\uff0c\u5b57\u6bb5\u4e2d\u4f7f\u7528\n@Retention(RetentionPolicy.RUNTIME)                 \/\/ \u4fdd\u7559\u7b56\u7565\u5f53\u7136\u9009\u8fd0\u884c\u65f6\u7684RUNTIME\u5566\uff0c\u65b9\u4fbf\u6211\u4eec\u5728\u8fd0\u884c\u65f6\u83b7\u53d6\u6ce8\u89e3\u7684\u5c5e\u6027\n@Constraint(validatedBy = UIDValidator.class)       \/\/ \u8bbe\u5b9a\u76f8\u5173\u8054\u7684\u9a8c\u8bc1\u5668\u7c7b\uff0c\u5c06\u5728\u8be5\u9a8c\u8bc1\u5668\u7c7b\u4e2d\u7f16\u5199\u9a8c\u8bc1\u903b\u8f91\npublic @interface UID {\n    \/**\n     * \u662f\u5426\u4ec5\u5141\u8bb8\u7ba1\u7406\u5458\u64cd\u4f5c\n     *\/\n    boolean value() default false;\n\n    \/\/ \u6839\u636e JSR 303 \u63d0\u6848\uff0c\u7528\u4e8e\u9a8c\u8bc1\u53c2\u6570\u7684\u6ce8\u89e3\u4e2d\u5fc5\u987b\u6709\u4e0b\u9762\u4e09\u4e2a\u5c5e\u6027\n\n    \/\/ \u9a8c\u8bc1\u4e0d\u901a\u8fc7\u65f6\u7684\u9519\u8bef\u4fe1\u606f\n    String message() default &quot;\u65e0\u6743\u64cd\u4f5c\u8d44\u6e90&quot;;\n\n    \/\/ \u6821\u9a8c\u5206\u7ec4\uff0c\u672c\u6587\u6682\u4e0d\u63a2\u7a76\u8be5\u5c5e\u6027\uff0c\u8fd9\u91cc\u76f4\u63a5\u7528\u9ed8\u8ba4\n    Class&lt;?&gt;[] groups() default {};\n\n    \/\/ \u7531\u9a8c\u8bc1\u5ba2\u6237\u7aef\u5c06\u4e00\u4e9b\u5143\u6570\u636e\u4fe1\u606f\u4e0e\u7ed9\u5b9a\u7684\u7ea6\u675f\u58f0\u660e\u76f8\u5173\u8054\uff0c\u672c\u6587\u6682\u4e0d\u63a2\u7a76\u8be5\u5c5e\u6027\uff0c\u8fd9\u91cc\u76f4\u63a5\u7528\u9ed8\u8ba4\n    Class&lt;? extends Payload&gt;[] payload() default {};\n}<\/code><\/pre>\n<h3>\u7b2c\u4e8c\u6b65\uff1a\u7f16\u5199\u9a8c\u8bc1\u5668\u7c7b<\/h3>\n<p>\u6bd4\u8f83\u7b80\u5355\uff0c\u5b9e\u73b0<code>ConstraintValidator<\/code>\u63a5\u53e3\u5373\u53ef<\/p>\n<h5>\u6587\u6863\u91cc\u8be5\u63a5\u53e3\u7684\u5b9a\u4e49\uff1a<\/h5>\n<pre><code class=\"language-java\">public interface ConstraintValidator&lt;A extends Annotation, T&gt; {\n    ...\n}<\/code><\/pre>\n<h5>\u6cdb\u578b\u8bf4\u660e<\/h5>\n<ul>\n<li>\n<p>A \u7531\u8be5\u9a8c\u8bc1\u5668\u5904\u7406\u7684\u6ce8\u89e3\u7c7b\u578b\uff0c\u8fd9\u91cc\u5c31\u7528\u524d\u9762\u7f16\u5199\u7684\u6ce8\u89e3<code>@UID<\/code>\u5566<\/p>\n<blockquote>\n<p>\u539f\u6587\uff1athe annotation type handled by an implementation<\/p>\n<\/blockquote>\n<\/li>\n<li>\n<p>T \u652f\u6301\u88ab\u6821\u9a8c\u7684\u6570\u636e\u7c7b\u578b\uff0c\u8fd9\u91cc\u7528Integer\u8868\u793a\u53ea\u652f\u6301\u6574\u6570\u578b\uff08\u4f7f\u7528Object\u53ef\u4ee5\u652f\u6301\u4efb\u610f\u7c7b\u578b\uff09<\/p>\n<blockquote>\n<p>\u539f\u6587\uff1athe target type supported by an implementation<\/p>\n<\/blockquote>\n<\/li>\n<\/ul>\n<p>\u9a8c\u8bc1\u5668\u4ee3\u7801\u7f16\u5199\uff1a<br \/>\n<strong>\u6ce8\u610f: \u4e0d\u9700\u8981\u7ed9\u8be5\u7c7b\u6dfb\u52a0<code>@Component<\/code>\u6ce8\u89e3\u6765\u6301\u4e45\u5316\u5355\u5b9e\u4f8b\u5bf9\u8c61\uff0c\u539f\u56e0\u770b\u8fd9\u91cc<a href=\"#a\">\u9a8c\u8bc1\u5668\u751f\u547d\u5468\u671f\u4e0e\u5b9e\u4f8b\u5316\u8fc7\u7a0b<\/a><\/strong><\/p>\n<pre><code class=\"language-java\">public class UIDValidator implements ConstraintValidator&lt;UID, Integer&gt; {\n    \/\/ \u6ce8\u89e3\u7684\u5bf9\u8c61\u5b9e\u4f8b\n    private UID validUID;\n\n    @Override\n    public boolean isValid(Integer value, ConstraintValidatorContext context) {\n        \/\/ \u6211\u8fd9\u91cc\u4f7f\u7528\u4e86SpringSecurity\u6765\u5904\u7406\u7528\u6237\u767b\u5f55\u9274\u6743\uff0c\u53ef\u901a\u8fc7\u6b64\u65b9\u6cd5\u83b7\u53d6\u5df2\u901a\u8fc7\u9274\u6743\u7684\u7528\u6237\u5bf9\u8c61\u5b9e\u4f8b\n        User user = (User) SecurityContextHolder.getContext().getAuthentication().getPrincipal();\n\n        \/\/ \u4f7f\u7528session\u7684\u8bdd\u53ef\u4ee5\u91c7\u7528\u4ee5\u4e0b\u65b9\u6cd5\u83b7\u53d6user\u5bf9\u8c61\u5b9e\u4f8b\uff0c\u6839\u636e\u9879\u76ee\u5b9e\u9645\u60c5\u51b5\u4fee\u6539session\u7684Attribute\u540d\n        \/\/ User user = (User) ((ServletRequestAttributes)RequestContextHolder.getRequestAttributes()).getRequest().getSession().getAttribute(&quot;user&quot;);\n\n        if (validUID.value() == true &amp;&amp; !user.isAdmin()) {\n            return false;   \/\/ \u82e5\u6ce8\u89e3value\u4e3atrue\u65f6\uff0c\u975e\u7ba1\u7406\u5458\u7528\u6237\u76f4\u63a5\u62d2\u7edd\n        } else if (user.getId() != value &amp;&amp; !user.isAdmin()) {\n            return false;   \/\/ \u975e\u7ba1\u7406\u5458\u7528\u6237\u64cd\u4f5c\u975e\u81ea\u5df1ID\u7684\u8d44\u6e90\u65f6\u62d2\u7edd\n        } else {\n            return true;    \/\/ \u901a\u8fc7\u9a8c\u8bc1\n        }\n    }\n\n    \/**\n     * \u9a8c\u8bc1\u5668\u88ab\u521d\u59cb\u5316\u65f6\u4f1a\u6267\u884c\u7684\u65b9\u6cd5\uff08\u7c7b\u4f3c\u4e8e\u5bf9\u8c61\u7684\u6784\u9020\u65b9\u6cd5\uff0c\u8be5\u65b9\u6cd5\u4f1a\u5728\u9a8c\u8bc1\u5668\u88ab\u5b9e\u4f8b\u5316\u65f6\u6267\u884c\uff09\n     * @param constraintAnnotation \u6821\u9a8c\u6ce8\u89e3\u7684\u5bf9\u8c61\u5b9e\u4f8b\n     *\/\n    @Override\n    public void initialize(UID constraintAnnotation) {\n        validUID = constraintAnnotation;\n    }\n}<\/code><\/pre>\n<h3>\u5728\u63a7\u5236\u5668\u4e2d\u4f7f\u7528<\/h3>\n<p>\u63a7\u5236\u5668\u4ee3\u7801<\/p>\n<pre><code class=\"language-java\">\/**\n * \u4e00\u4e2a\u793a\u4f8b\u63a7\u5236\u5668\n * \u82e5\u63a7\u5236\u5668\u7c7b\u6ca1\u6709\u7528@Validated\u6807\u6ce8\uff0c\u5219\u9700\u8981\u5728\u8be5\u5bf9\u5e94\u65b9\u6cd5\u53c2\u6570\u4e2d\u52a0@Valid\u6ce8\u89e3\u624d\u80fd\u4f7f\u6821\u9a8c\u6ce8\u89e3\u751f\u6548\n *\/\n@RestController\n@Validated\npublic FooController {\n\n    \/**\n     * \u5220\u9664\u4e00\u4e2a\u7528\u6237\n     * \u6ce8\uff1a\u8fd9\u91cc\u7ed9\u6ce8\u89e3@UID\u4f20\u5165\u4e86\u53c2\u6570value\uff0c\u503c\u4e3atrue\n     *\/\n    @DeleteMapping(&quot;\/api\/user\/{uid}&quot;)\n    public JsonResult deleteUser(@PathVariable @UID(true) int uid) {\n        \/\/ \u63a7\u5236\u5668\u4ee3\u7801\n        return JsonResult.getInstance();\n    }\n\n    \/**\n     * \u5220\u9664\u6587\u4ef6\u6216\u76ee\u5f55\n     *\/\n    @DeleteMapping(&quot;\/api\/user\/{uid}\/file\/**&quot;)\n    public JsonResult delete(@PathVariable @UID int uid) throws IOException {\n        \/\/ \u63a7\u5236\u5668\u4ee3\u7801\n        return JsonResult.getInstance();\n    }\n}<\/code><\/pre>\n<p>\u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u7f16\u5199\u7684\u81ea\u5b9a\u4e49\u6ce8\u89e3\u548c\u8868\u5355\u9a8c\u8bc1\u5668\u5df2\u7ecf\u5f00\u59cb\u6b63\u5e38\u5de5\u4f5c\u4e86\uff0c\u53ea\u6709\u901a\u8fc7\u9a8c\u8bc1\u5668\u9a8c\u8bc1\u5904\u7406\u7684\u53c2\u6570\u624d\u80fd\u5f00\u59cbWeb\u63a7\u5236\u5668\u7684\u8fdb\u4e00\u6b65\u5904\u7406\u3002\u63a5\u4e0b\u6765\u7684\u6700\u540e\u4e00\u6b65\u5c31\u662f\u5bf9\u65e0\u6cd5\u901a\u8fc7\u8868\u5355\u9a8c\u8bc1\u7684\u8bf7\u6c42\u8fdb\u884c\u5904\u7406<\/p>\n<h3>\u5904\u7406\u6821\u9a8c\u62d2\u7edd<\/h3>\n<p>\u5f53\u8868\u5355\u6821\u9a8c\u4e0d\u901a\u8fc7\u65f6\uff0c\u6846\u67b6\u4f1a\u629b\u51fa<code>org.springframework.web.bind.MethodArgumentNotValidException<\/code>\u5f02\u5e38\uff0cSpring\u4f1a\u9ed8\u8ba4\u54cd\u5e94\u4e00\u4e2a\u9519\u8bef\u9875\u9762\u6216RESTful\u98ce\u683c\u7684\u9ed8\u8ba4\u4fe1\u606f\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u7a0b\u81ea\u5b9a\u4e49\u81ea\u5df1\u7684\u9519\u8bef\u54cd\u5e94\u3002<\/p>\n<h4>\u6355\u83b7\u6846\u67b6\u5f02\u5e38<\/h4>\n<p>\u65e2\u7136\u5df2\u7ecf\u5f97\u77e5\u8868\u5355\u9a8c\u8bc1\u88ab\u62d2\u7edd\u65f6\u4f1a\u629b\u51fa<code>MethodArgumentNotValidException<\/code>\u5f02\u5e38\uff0c\u90a3\u4e48\u53ea\u9700\u8981\u5728\u88ab<code>@ControllerAdvice<\/code>\u6216<code>@RestControllerAdvice<\/code>\u6ce8\u89e3\u6807\u6ce8\u7684\u7c7b\u4e2d\u7f16\u5199\u5bf9\u5e94\u7684\u5f02\u5e38\u5904\u7406\u65b9\u6cd5\u5373\u53ef\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u6837\u4f8b<\/p>\n<pre><code class=\"language-java\">@RestControllerAdvice\npublic class ControllerAdvice {\n    @ExceptionHandler(MethodArgumentNotValidException.class)\n    public JsonResult validFormError(MethodArgumentNotValidException e) {\n\n        \/\/ \u5f53\u9a8c\u8bc1\u51fa\u9519\u65f6\uff0c\u4e0d\u4f1a\u7acb\u5373\u505c\u6b62\u6821\u9a8c\uff0c\u800c\u662f\u7ee7\u7eed\u6267\u884c\u5176\u4ed6\u9700\u8981\u88ab\u9a8c\u8bc1\u7684\u53c2\u6570\u9a8c\u8bc1\n        \/\/ \u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u8fd9\u4e2a\u5f02\u5e38\u5bf9\u8c61\u7684BindingResult\u62ff\u5230\u6240\u6709\u7684\u9a8c\u8bc1\u9519\u8bef\u7684\u53c2\u6570\n        BindingResult bindingResult = e.getBindingResult();\n        StringBuilder sb = new StringBuilder();\n\n        \/**\n         * \u6211\u628a\u6240\u6709\u9519\u8bef\u4fe1\u606f\u7528&#039;;&#039;\u5206\u5272\u540e\u6765\u54cd\u5e94\u7ed9\u524d\u7aef\n         * \u8fd9\u91cc\u7684JsonResult\u662f\u6211\u81ea\u5df1\u5c01\u88c5\u7684RESTful\u6a21\u677f\uff0c\u6839\u636e\u5b9e\u9645\u9879\u76ee\u60c5\u51b5\u7075\u6d3b\u4fee\u6539\u5427\n         *\/\n        bindingResult.getFieldErrors().forEach(error -&gt; sb.append(error.getDefaultMessage()).append(&quot;;&quot;));\n        return JsonResult.getInstance(422, null, sb.toString());\n    }<\/code><\/pre>\n<p>\u5728\u88ab<code>@ControllerAdvice<\/code>\u6216<code>@RestControllerAdvice<\/code>\u6ce8\u89e3\u6807\u6ce8\u7684\u7c7b\u65b9\u6cd5\u4e2d\u6dfb\u52a0<code>@ExceptionHandler<\/code>\u6ce8\u89e3\u5c31\u80fd\u6807\u8bb0\u5f53\u4ee3\u7801\u629b\u51fa\u5f02\u5e38\u65f6\u6267\u884c\u7684\u65b9\u6cd5\u3002<br \/>\n\u8be5\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\u7684\u4f5c\u7528\u4e0e\u63a7\u5236\u5668\u7684\u8fd4\u56de\u503c\u4f5c\u7528\u76f8\u540c\u3002<\/p>\n<h3>\u9a8c\u8bc1\u5668\u7684\u751f\u547d\u5468\u671f\u4e0e\u5b9e\u4f8b\u5316\u8fc7\u7a0b<\/h3>\n<p>\u4e5f\u8bb8\u4f60\u6ce8\u610f\u5230\u4e86\uff0c\u524d\u9762\u7f16\u5199\u9a8c\u8bc1\u5668\u7684\u65f6\u5019\uff0c\u5e76\u4e0d\u9700\u8981\u4f7f\u7528<code>@Component<\/code>\u6ce8\u89e3\u6765\u5c06\u7c7b\u6ce8\u5165\u5230Spring IOC\u5bb9\u5668\uff08\u5f53\u7136\uff0c\u7528\u4e86\u4e5f\u4e0d\u662f\u4e0d\u884c\uff0c\u53ea\u662f\u4e00\u822c\u60c5\u51b5\u4e0b\u8fd9\u4e48\u505a\u6ca1\u6709\u610f\u4e49\uff0c\u6d6a\u8d39\u5185\u5b58\uff09\uff0c\u90a3\u4e48\u9a8c\u8bc1\u5668\u4f1a\u4ee5\u4ec0\u4e48\u6837\u7684\u65b9\u5f0f\u8fdb\u884c\u5b9e\u4f8b\u5316\u5462\uff0c\u4e0b\u9762\u5c06\u5bf9\u9b54\u6cd5\u8fdb\u884c\u89e3\u5bc6<\/p>\n<h4>\u751f\u547d\u5468\u671f\u4e0e\u5b9e\u4f8b\u5316\u603b\u7ed3<\/h4>\n<p>\u5148\u8bf4\u7ed3\u8bba\u5427\uff08\u6ce8\u89e3\u7684groups\u548cPayload\u5747\u4e3a\u9ed8\u8ba4\u7a7a\u503c\u7684\u60c5\u51b5\uff0c\u975e\u7a7a\u65f6\u7684\u60c5\u51b5\u6211\u8fd8\u6ca1\u63a2\u7a76\u8fc7\uff0c\u7b49\u6211\u7528\u5230\u4e86\u4e14\u4e0e\u672c\u7ed3\u8bba\u6709\u51fa\u5165\u518d\u66f4\u65b0\uff09<\/p>\n<ul>\n<li>SpringBoot\u542f\u52a8\u540e\uff0c\u7b2c\u4e00\u6b21\u9a8c\u8bc1\u53c2\u6570\u65f6\u4f1a\u5bf9\u9a8c\u8bc1\u5668\u8fdb\u884c\u5b9e\u4f8b\u5316\u5e76\u7f13\u5b58\uff0c\u4e0b\u6b21\u9700\u8981\u9a8c\u8bc1\u65f6\u76f4\u63a5\u4ece\u7f13\u5b58\u4e2d\u83b7\u53d6\u9a8c\u8bc1\u5668\u5bf9\u8c61\uff0c\u751f\u547d\u5468\u671f\u4e3a\u6301\u4e45\u5316\u7684\u5355\u4f8b\u5bf9\u8c61<\/li>\n<li>\u5177\u4f53\u7684\u5b9e\u4f8b\u5316\u64cd\u4f5c\u7531Spring\u7684BeanFactory\u6267\u884c\uff0c\u56e0\u6b64\u53ef\u4ee5\u5904\u7406\u9a8c\u8bc1\u5668\u7684<code>@Resource<\/code>,<code>@Autowired<\/code>\u6ce8\u89e3\u548c\u6784\u9020\u5668\u6ce8\u5165<\/li>\n<li>\u4f7f\u7528\u540c\u4e00\u4e2a\u6ce8\u89e3\u65f6\u5019\uff0c\u6bcf\u4e2a\u5c5e\u6027\u4e0d\u76f8\u540c\u7684\u6ce8\u89e3\u90fd\u4f1a\u6709\u4e00\u4e2a\u5bf9\u5e94\u7684\u9a8c\u8bc1\u5668<\/li>\n<\/ul>\n<h4>\u6e90\u7801\u903b\u8f91\u7b80\u6613\u5206\u6790<\/h4>\n<p>\u53c2\u6570\u9a8c\u8bc1\u662f\u57fa\u4e8e\u4ee3\u7406\u5b9e\u73b0\u7684\uff0c\u8fd9\u4e2a\u4e5f\u662f\u5f88\u5bb9\u6613\u60f3\u5230\u5b9e\u73b0\u65b9\u5f0f\u3002\u672c\u6587\u53ea\u5173\u6ce8\u5b9e\u4f8b\u5316\u7684\u8fc7\u7a0b<br \/>\n\u6211\u7528Debug\u8dd1\u4e86\u4e0b\uff0c\u7b80\u5355\u5206\u6790\u4e86\u6e90\u7801\u548c\u6821\u9a8c\u6267\u884c\u8fc7\u7a0b<\/p>\n<p>\u5f53\u9700\u8981\u5bf9\u53c2\u6570\u8fdb\u884c\u9a8c\u8bc1\u65f6\uff0c<code>ConstraintValidatorManagerImpl<\/code>(<code>ConstraintValidatorManager<\/code>\u7684\u9ed8\u8ba4\u5b9e\u73b0\u7c7b)\u4f1a\u5148\u4ece\u7f13\u5b58\u4e2d\u83b7\u53d6\u5bf9\u5e94\u7684\u9a8c\u8bc1\u5668\uff0c\u5173\u952e\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-java\">\/\/ \u521b\u5efa\u6839\u636e\u6ce8\u89e3\u4fe1\u606f\u548c\u5f85\u9a8c\u8bc1\u6570\u636e\u7684\u6570\u636e\u7c7b\u578b\u521b\u5efakey\nCacheKey key = new CacheKey( descriptor.getAnnotationDescriptor(), validatedValueType, constraintValidatorFactory, initializationContext );\n\n\/\/ \u5c1d\u8bd5\u4f9d\u636ekey\u4ece\u7f13\u5b58\u4e2d\u83b7\u53d6\u9a8c\u8bc1\u5668\u5b9e\u4f8b\u5bf9\u8c61\n@SuppressWarnings(&quot;unchecked&quot;)\nConstraintValidator&lt;A, ?&gt; constraintValidator = (ConstraintValidator&lt;A, ?&gt;) constraintValidatorCache.get( key );\n\n\/\/ \u83b7\u53d6\u4e0d\u5230\u5219\u521b\u5efa\u5e76\u521d\u59cb\u5316\u9a8c\u8bc1\u5668\uff0c\u5e76\u5c06\u5176\u7f13\u5b58\nif ( constraintValidator == null ) {\n    constraintValidator = createAndInitializeValidator( validatedValueType, descriptor, constraintValidatorFactory, initializationContext );\n    constraintValidator = cacheValidator( key, constraintValidator );\n} else {\n    LOG.tracef( &quot;Constraint validator %s found in cache.&quot;, constraintValidator );\n}<\/code><\/pre>\n<p>\u800c\u521b\u5efa\u9a8c\u8bc1\u5668\u7684\u65b9\u6cd5\u4e2d\uff0c\u4f7f\u7528\u7684BeanFactory\u662f<code>ConstraintValidatorFactory<\/code>\uff0c\u8fd9\u4e2a\u7c7b\u6709\u4e2a<code>beanFactory<\/code>\u5c5e\u6027\uff0c\u503c\u4e3a<code>org.springframework.beans.factory.support.DefaultListableBeanFactory<\/code>\uff08spring\u6846\u67b6\u9ed8\u8ba4\u7684Bean\u5de5\u5382\uff09\uff0c\u7531\u8fd9\u4e2a\u7c7b\u628a\u9a8c\u8bc1\u5668\u4f5c\u4e3a\u4e00\u4e2aSpring Bean\u53bb\u521b\u5efa\uff0c\u81f3\u6b64\u5c31\u5b8c\u6210\u4e86\u9a8c\u8bc1\u5668\u7c7b\u7684\u5b9e\u4f8b\u5316\u3002<\/p>\n<p>\u7531\u4e8e\u4f7f\u7528\u7684\u662fSpring\u6846\u67b6\u7684Bean\u5de5\u5382\u8fdb\u884c\u521b\u5efa\uff0c\u56e0\u6b64\u4e5f\u4f1a\u5904\u7406\u9a8c\u8bc1\u5668\u4e2d\u7684<code>@Resource<\/code>\uff0c<code>@Autowired<\/code>\u6ce8\u89e3\u548c\u6784\u9020\u5668\u6ce8\u5165\u4f7f\u5f97\u6211\u4eec\u7684\u9a8c\u8bc1\u5668\u4e5f\u53ef\u4ee5\u5f88\u65b9\u4fbf\u5730\u83b7\u53d6IOC\u5bb9\u5668\u4e2d\u7684Bean<\/p>\n<p>\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u8fd9\u4e2a\u7f13\u5b58\u5185\u90e8\u662f\u4f7f\u7528Map\u6765\u5b9e\u73b0\u7684\uff0c\u5206\u6790key\u7684\u751f\u6210\u89c4\u5219\u540e\u53ef\u53d1\u73b0\u6709\u4e24\u4e2a\u5173\u952e\u7684\u5c5e\u6027\u4f1a\u5f71\u54cdkey<\/p>\n<ul>\n<li><code>descriptor.getAnnotationDescriptor()<\/code> \u6ce8\u89e3\u7684\u7ea6\u675f\u63cf\u8ff0\u7b26\u4fe1\u606f\uff0c\u5305\u542b\u6ce8\u89e3\u7c7b\u540d\uff0c\u5404\u9879\u5c5e\u6027\u548c\u503c\uff0chashCode\uff0c\u6ce8\u89e3\u5b9e\u4f8b\u5bf9\u8c61\uff08\u88ab\u4ee3\u7406\uff09<\/li>\n<li><code>validatedValueType<\/code> \u88ab\u9a8c\u8bc1\u5c5e\u6027\u7684\u6570\u636e\u7c7b\u578b<\/li>\n<\/ul>\n<p>\u56e0\u6b64\uff0c\u4f7f\u7528\u672c\u6587\u793a\u4f8b\u7684\u6ce8\u89e3\u65f6\uff0c<code>@UID(true)<\/code>\u548c<code>@UID<\/code>\u7684\u5c5e\u6027<code>value<\/code>\u4e0d\u76f8\u540c\uff0c\u5c31\u4f1a\u5bfc\u81f4<code>descriptor.getAnnotationDescriptor()<\/code>\u7684\u4fe1\u606f\u4e0d\u4e00\u6837\uff0c\u6700\u7ec8\u5bfc\u81f4\u7684\u7ed3\u679c\u5c31\u662f\u4f1a\u521b\u5efa\u4e24\u4e2a\u4e0d\u540c\u7684\u9a8c\u8bc1\u5668\u5b9e\u4f8b<\/p>\n<p><span id=\"a\"><\/span><\/p>\n<h5>\u9a8c\u8bc1\u5668\u4e0d\u9700\u8981@Component\u6ce8\u89e3\u7684\u89e3\u91ca<\/h5>\n<p>\u7531\u4e8e\u83b7\u53d6\u9a8c\u8bc1\u5668\u65f6\uff0c\u6846\u67b6\u662f\u4f9d\u636e\u6ce8\u89e3\u7684\u5404\u9879\u5c5e\u6027\u503c\uff08\u7ea6\u675f\u63cf\u8ff0\u7b26\uff09\u6765\u751f\u6210key\uff0c\u4ee5key\u83b7\u53d6\u5bf9\u5e94\u7684\u9a8c\u8bc1\u5668\u5b9e\u4f8b\u6765\u6267\u884c\u9a8c\u8bc1\u903b\u8f91\u7684\uff0c\u800c\u6211\u4eec\u624b\u52a8\u7528<code>@Component<\/code>\u521b\u5efa\u7684\u5b9e\u4f8b\u5bf9\u8c61\u5e76\u6ca1\u6709\u4e0e<code>ConstraintValidatorCache<\/code>\u7684key\u76f8\u5173\u8054\uff0c\u5728\u9a8c\u8bc1\u7684\u8fc7\u7a0b\u4e2d\u4e0d\u4f1a\u88ab\u8c03\u7528\uff0c\u53ea\u4f1a\u767d\u767d\u6d6a\u8d39\u5185\u5b58<\/p>\n<h3>\u53c2\u8003\u6587\u6863<\/h3>\n<ul>\n<li><a href=\"https:\/\/docs.spring.io\/spring-framework\/docs\/current\/reference\/html\/core.html#validation-beanvalidation-overview\">Spring Framework Reference - validation-beanvalidation-overview<\/a><\/li>\n<li><a href=\"https:\/\/spring.io\/guides\/gs\/validating-form-input\/\">Spring Validating Form Input Guides<\/a><\/li>\n<li><a href=\"https:\/\/jcp.org\/en\/jsr\/detail?id=303\">JSR 303<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>SpringBoot\u8868\u5355\u9a8c\u8bc1\uff1a\u81ea\u5b9a\u4e49\u6ce8\u89e3\u548c\u53c2\u6570\u9a8c\u8bc1\u5668 \u5e8f\u8a00 \u5728\u8fdb\u884cSpringBoot\u7684Web\u7a0b\u5e8f\u5f00\u53d1\u4e2d\uff0c\u5e38\u5e38 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":43,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[21,20,19,18],"tags":[22,23],"_links":{"self":[{"href":"https:\/\/blog.xiaotao2333.top:344\/index.php?rest_route=\/wp\/v2\/posts\/30"}],"collection":[{"href":"https:\/\/blog.xiaotao2333.top:344\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.xiaotao2333.top:344\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.xiaotao2333.top:344\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.xiaotao2333.top:344\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=30"}],"version-history":[{"count":16,"href":"https:\/\/blog.xiaotao2333.top:344\/index.php?rest_route=\/wp\/v2\/posts\/30\/revisions"}],"predecessor-version":[{"id":70,"href":"https:\/\/blog.xiaotao2333.top:344\/index.php?rest_route=\/wp\/v2\/posts\/30\/revisions\/70"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.xiaotao2333.top:344\/index.php?rest_route=\/wp\/v2\/media\/43"}],"wp:attachment":[{"href":"https:\/\/blog.xiaotao2333.top:344\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=30"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.xiaotao2333.top:344\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=30"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.xiaotao2333.top:344\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=30"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}