{"id":202598,"date":"2025-05-22T09:46:21","date_gmt":"2025-05-22T01:46:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202598\/"},"modified":"2025-05-22T09:46:21","modified_gmt":"2025-05-22T01:46:21","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8-java-%e4%b8%ad%e4%bd%bf%e7%94%a8%e6%b3%a8%e8%a7%a3%e5%a4%84%e7%90%86%e5%bc%82%e5%b8%b8%e5%a4%84%e7%90%86%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202598\/","title":{"rendered":"\u5982\u4f55\u5728 Java \u4e2d\u4f7f\u7528\u6ce8\u89e3\u5904\u7406\u5f02\u5e38\u5904\u7406\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

\u5982\u4f55\u5728 Java \u4e2d\u4f7f\u7528\u6ce8\u89e3\u5904\u7406\u5f02\u5e38\u5904\u7406\uff1f<\/h1>\n

\u7f16\u7a0b\u5e76\u4e0d\u662f\u4e00\u4e2a\u673a\u68b0\u6027\u7684\u5de5\u4f5c\uff0c\u800c\u662f\u9700\u8981\u6709\u601d\u8003\uff0c\u6709\u521b\u65b0\u7684\u5de5\u4f5c\uff0c\u8bed\u6cd5\u662f\u56fa\u5b9a\u7684\uff0c\u4f46\u89e3\u51b3\u95ee\u9898\u7684\u601d\u8def\u5219\u662f\u4f9d\u9760\u4eba\u7684\u601d\u7ef4\uff0c\u8fd9\u5c31\u9700\u8981\u6211\u4eec\u575a\u6301\u5b66\u4e60\u548c\u66f4\u65b0\u81ea\u5df1\u7684\u77e5\u8bc6\u3002\u4eca\u5929\u5c31\u6574\u7406\u5206\u4eab\u300a\u5982\u4f55\u5728 Java \u4e2d\u4f7f\u7528\u6ce8\u89e3\u5904\u7406\u5f02\u5e38\u5904\u7406\uff1f\u300b\uff0c\u6587\u7ae0\u8bb2\u89e3\u7684\u77e5\u8bc6\u70b9\u4e3b\u8981\u5305\u62ec\uff0c\u5982\u679c\u4f60\u5bf9\u6587\u7ae0\u65b9\u9762\u7684\u77e5\u8bc6\u70b9\u611f\u5174\u8da3\uff0c\u5c31\u4e0d\u8981\u9519\u8fc7\uff0c\u5728\u8fd9\u53ef\u4ee5\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5f00\u53d1\u80fd\u529b\u7684\u63d0\u5347\u3002<\/p>\n

\u901a\u8fc7\u4f7f\u7528 @ExceptionHandler \u6ce8\u89e3\uff0c\u53ef\u4ee5\u5728 Java \u4e2d\u4f7f\u7528\u6ce8\u89e3\u5904\u7406\u5f02\u5e38\u3002\u8be5\u6ce8\u89e3\u653e\u5728\u8981\u5904\u7406\u5f02\u5e38\u7684\u65b9\u6cd5\u4e0a\uff0c\u63a5\u53d7\u4e00\u4e2a Exception \u53c2\u6570\u6307\u5b9a\u8981\u5904\u7406\u7684\u5f02\u5e38\u7c7b\u578b\u3002\u4f7f\u7528\u6ce8\u89e3\uff0c\u53ef\u4ee5\u6839\u636e\u5f02\u5e38\u7c7b\u578b\u81ea\u52a8\u751f\u6210\u4ee3\u7801\u4ee5\u6355\u83b7\u548c\u5904\u7406\u5f02\u5e38\uff0c\u7b80\u5316\u4ee3\u7801\u5e76\u63d0\u9ad8\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n

<\/p>\n

\u5982\u4f55\u5728 Java \u4e2d\u4f7f\u7528\u6ce8\u89e3\u5904\u7406\u5f02\u5e38\u5904\u7406<\/strong><\/p>\n

\u7b80\u4ecb<\/strong><\/p>\n

\u6ce8\u89e3\u5904\u7406\u662f Java \u4e2d\u4e00\u79cd\u5f3a\u5927\u7684\u529f\u80fd\uff0c\u53ef\u7528\u4e8e\u5728\u7f16\u8bd1\u65f6\u4fee\u6539\u4ee3\u7801\u3002\u5b83\u53ef\u4ee5\u7528\u4e8e\u5404\u79cd\u76ee\u7684\uff0c\u5305\u62ec\u5904\u7406\u5f02\u5e38\u3002\u901a\u8fc7\u4f7f\u7528\u6ce8\u89e3\uff0c\u6211\u4eec\u53ef\u4ee5\u6839\u636e\u5f02\u5e38\u7c7b\u578b\u81ea\u52a8\u751f\u6210\u4ee3\u7801\u4ee5\u6355\u83b7\u548c\u5904\u7406\u5f02\u5e38\u3002<\/p>\n

\u4f7f\u7528\u65b9\u6cd5<\/strong><\/p>\n

\u53ef\u4ee5\u4f7f\u7528 @ExceptionHandler<\/code> \u6ce8\u89e3\u6765\u5904\u7406\u5f02\u5e38\u3002\u8be5\u6ce8\u89e3\u5e94\u653e\u5728\u8981\u5904\u7406\u5f02\u5e38\u7684\u65b9\u6cd5\u4e0a\u3002\u5b83\u63a5\u53d7\u4e00\u4e2a Throwable<\/code> \u53c2\u6570\uff0c\u6307\u5b9a\u8981\u5904\u7406\u7684\u5f02\u5e38\u7c7b\u578b\u3002<\/p>\n

\u4ee5\u4e0b\u662f\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n

import org.springframework.web.bind.annotation.ExceptionHandler;\n\n@RestController\npublic class ExampleController {\n\n    @GetMapping(\"\/example\")\n    public String example() throws Exception {\n        throw new Exception(\"This is an example exception\");\n    }\n    \n    @ExceptionHandler(Exception.class)\n    public ResponseEntity<String> handleException(Exception ex) {\n        return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(\"Error occurred: \" + ex.getMessage());\n    }\n}<\/pre>\n
\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c@ExceptionHandler<\/code> \u6ce8\u89e3\u7528\u4e8e\u5904\u7406\u4efb\u4f55\u7c7b\u578b\u7684\u5f02\u5e38\u3002\u5b83\u4f1a\u6355\u83b7 Exception<\/code> \u53ca\u5176\u5b50\u7c7b\uff0c\u5e76\u5728\u53d1\u751f\u65f6\u8fd4\u56de HTTP 500 \u54cd\u5e94\u3002<\/p>\n
\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n
\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528 Spring Boot \u548c Hibernate \u7684\u5b9e\u6218\u6848\u4f8b\uff1a<\/p>\n
import org.springframework.data.jpa.repository.JpaRepository;\nimport org.springframework.stereotype.Repository;\n\n@Repository\npublic interface UserRepository extends JpaRepository<User, Long> {\n}\n\n@Service\npublic class UserService {\n\n    @Autowired\n    private UserRepository userRepository;\n\n    public User getById(Long id) {\n        return userRepository.findById(id).orElseThrow(() -> new ResourceNotFoundException(\"User not found\"));\n    }\n}<\/pre>\n
\u5728\u6b64\u6848\u4f8b\u4e2d\uff0cUserService<\/code> \u7684 getById<\/code> \u65b9\u6cd5\u4f7f\u7528 @ExceptionHandler<\/code> \u6ce8\u89e3\u6765\u5904\u7406 ResourceNotFoundException<\/code> \u5f02\u5e38\u3002\u5982\u679c\u627e\u4e0d\u5230\u7528\u6237\uff0c\u5b83\u5c06\u629b\u51fa\u8be5\u5f02\u5e38\uff0c\u5e76\u88ab @ExceptionHandler<\/code> \u6355\u83b7\u3002<\/p>\n
\u7ed3\u8bba<\/strong><\/p>\n
\u5728 Java \u4e2d\u4f7f\u7528\u6ce8\u89e3\u5904\u7406\u5f02\u5e38\u5904\u7406\u662f\u4e00\u79cd\u4fbf\u6377\u4e14\u5f3a\u5927\u7684\u65b9\u5f0f\u3002\u5b83\u4f7f\u6211\u4eec\u80fd\u591f\u5728\u7f16\u8bd1\u65f6\u81ea\u52a8\u5904\u7406\u548c\u751f\u6210\u5f02\u5e38\u5904\u7406\u4ee3\u7801\uff0c\u4ece\u800c\u7b80\u5316\u4e86\u6211\u4eec\u7684\u4ee3\u7801\u5e76\u63d0\u9ad8\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662f\u300a\u5982\u4f55\u5728 Java \u4e2d\u4f7f\u7528\u6ce8\u89e3\u5904\u7406\u5f02\u5e38\u5904\u7406\uff1f\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8e\u5f02\u5e38\u5904\u7406,\u6ce8\u89e3\u7684\u8d44\u6599\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5982\u4f55\u5728 Java \u4e2d\u4f7f\u7528\u6ce8\u89e3\u5904\u7406...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-202598","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202598","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=202598"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202598\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202598"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202598"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202598"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}