{"id":854,"date":"2023-09-26T19:43:17","date_gmt":"2022-11-21T04:20:50","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/spring-mvc-%e5%bc%82%e5%b8%b8%e5%a4%84%e7%90%86-controlleradvice-exceptionhandler-handlerexceptionresolver%e3%80%82\/"},"modified":"2025-08-03T13:07:05","modified_gmt":"2025-08-03T05:07:05","slug":"spring-mvc-%e5%bc%82%e5%b8%b8%e5%a4%84%e7%90%86-controlleradvice-exceptionhandler-handlerexceptionresolver%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/spring-mvc-%e5%bc%82%e5%b8%b8%e5%a4%84%e7%90%86-controlleradvice-exceptionhandler-handlerexceptionresolver%e3%80%82\/","title":{"rendered":"Spring MVC\u5f02\u5e38\u5904\u7406\u8be6\u89e3\uff1a@ControllerAdvice\u3001@ExceptionHandler\u4e0eHandlerExceptionResolver\u5168\u9762\u6307\u5357"},"content":{"rendered":"

\u8fd9\u662f\u6587\u7ae0\u300aSpring MVC \u5f02\u5e38\u5904\u7406- @ControllerAdvice, @ExceptionHandler, HandlerExceptionResolver\u300b\u7684\u7b2c1\u90e8\u5206\uff08\u51716\u90e8\u5206\uff09\u3002<\/p>\n

\u4f7f\u7528Spring MVC\u5f02\u5e38\u5904\u7406\u975e\u5e38\u91cd\u8981\uff0c\u4ee5\u786e\u4fdd\u4e0d\u5c06\u670d\u52a1\u5668\u5f02\u5e38\u53d1\u9001\u5230\u5ba2\u6237\u7aef\u3002\u4eca\u5929\u6211\u4eec\u5c06\u4f7f\u7528@ExceptionHandler\u3001@ControllerAdvice\u548cHandlerExceptionResolver\u6765\u6df1\u5165\u4e86\u89e3Spring\u5f02\u5e38\u5904\u7406\u3002\u4efb\u4f55Web\u5e94\u7528\u7a0b\u5e8f\u90fd\u9700\u8981\u826f\u597d\u7684\u5f02\u5e38\u5904\u7406\u8bbe\u8ba1\uff0c\u56e0\u4e3a\u6211\u4eec\u4e0d\u5e0c\u671b\u5728\u5e94\u7528\u7a0b\u5e8f\u51fa\u73b0\u672a\u5904\u7406\u5f02\u5e38\u65f6\u63d0\u4f9b\u5bb9\u5668\u751f\u6210\u7684\u9875\u9762\u3002<\/p>\n

Spring\u5f02\u5e38\u5904\u7406<\/h2>\n

\u62e5\u6709\u4e00\u4e2a\u660e\u786e\u5b9a\u4e49\u7684\u5f02\u5e38\u5904\u7406\u65b9\u6cd5\u5bf9\u4e8e\u4efb\u4f55\u7f51\u9875\u5e94\u7528\u7a0b\u5e8f\u6846\u67b6\u6765\u8bf4\u90fd\u662f\u4e00\u4e2a\u5de8\u5927\u7684\u4f18\u52bf\u3002\u5f53\u6d89\u53ca\u5230\u7f51\u9875\u5e94\u7528\u7a0b\u5e8f\u4e2d\u7684\u5f02\u5e38\u548c\u9519\u8bef\u5904\u7406\u65f6\uff0cSpring MVC\u6846\u67b6\u8868\u73b0\u51fa\u8272\u3002Spring MVC\u6846\u67b6\u63d0\u4f9b\u4ee5\u4e0b\u65b9\u6cd5\u6765\u5e2e\u52a9\u6211\u4eec\u5b9e\u73b0\u5065\u58ee\u7684\u5f02\u5e38\u5904\u7406\u3002<\/p>\n

    \n
  1. \n

    \u57fa\u4e8e\u63a7\u5236\u5668\u7684\u5f02\u5e38\u5904\u7406<\/h3>\n

    \u6211\u4eec\u53ef\u4ee5\u5728\u63a7\u5236\u5668\u7c7b\u4e2d\u5b9a\u4e49\u5f02\u5e38\u5904\u7406\u65b9\u6cd5\u3002\u53ea\u9700\u8981\u7528@ExceptionHandler\u6ce8\u91ca\u8fd9\u4e9b\u65b9\u6cd5\u5373\u53ef\u3002\u8be5\u6ce8\u91ca\u4ee5Exception\u7c7b\u4f5c\u4e3a\u53c2\u6570\u3002\u56e0\u6b64\uff0c\u5982\u679c\u6211\u4eec\u4e3aException\u7c7b\u5b9a\u4e49\u4e86\u5176\u4e2d\u4e4b\u4e00\uff0c\u90a3\u4e48\u8bf7\u6c42\u5904\u7406\u5668\u65b9\u6cd5\u629b\u51fa\u7684\u5f02\u5e38\u5c06\u5168\u90e8\u88ab\u5904\u7406\u3002\u8fd9\u4e9b\u5f02\u5e38\u5904\u7406\u5668\u65b9\u6cd5\u4e0e\u5176\u4ed6\u8bf7\u6c42\u5904\u7406\u5668\u65b9\u6cd5\u4e00\u6837\uff0c\u6211\u4eec\u53ef\u4ee5\u6784\u5efa\u9519\u8bef\u54cd\u5e94\u5e76\u54cd\u5e94\u4e0d\u540c\u7684\u9519\u8bef\u9875\u9762\u3002\u6211\u4eec\u8fd8\u53ef\u4ee5\u53d1\u9001JSON\u9519\u8bef\u54cd\u5e94\uff0c\u6211\u4eec\u5c06\u5728\u793a\u4f8b\u4e2d\u5b66\u4e60\u3002\u5982\u679c\u5b9a\u4e49\u4e86\u591a\u4e2a\u5f02\u5e38\u5904\u7406\u5668\u65b9\u6cd5\uff0c\u5219\u5c06\u4f7f\u7528\u79bbException\u7c7b\u6700\u8fd1\u7684\u5904\u7406\u5668\u65b9\u6cd5\u3002\u4f8b\u5982\uff0c\u5982\u679c\u6211\u4eec\u4e3aIOException\u548cException\u5206\u522b\u5b9a\u4e49\u4e86\u4e24\u4e2a\u5904\u7406\u5668\u65b9\u6cd5\uff0c\u5e76\u4e14\u6211\u4eec\u7684\u8bf7\u6c42\u5904\u7406\u5668\u65b9\u6cd5\u5f15\u53d1\u4e86IOException\uff0c\u90a3\u4e48\u5c06\u6267\u884c\u7528\u4e8eIOException\u7684\u5904\u7406\u5668\u65b9\u6cd5\u3002<\/p>\n<\/li>\n

  2. \n

    \u5168\u5c40\u5f02\u5e38\u5904\u7406\u5668<\/h3>\n

    \u5f02\u5e38\u5904\u7406\u662f\u4e00\u4e2a\u6a2a\u5207\u5173\u6ce8\u70b9\uff0c\u5e94\u8be5\u5728\u6211\u4eec\u5e94\u7528\u7a0b\u5e8f\u7684\u6240\u6709\u5207\u5165\u70b9\u4e0a\u5904\u7406\u3002\u6211\u4eec\u5df2\u7ecf\u7814\u7a76\u4e86Spring AOP\uff0c\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48Spring\u63d0\u4f9b@ControllerAdvice\u6ce8\u91ca\uff0c\u6211\u4eec\u53ef\u4ee5\u4e0e\u4efb\u4f55\u7c7b\u4e00\u8d77\u4f7f\u7528\u6765\u5b9a\u4e49\u5168\u5c40\u5f02\u5e38\u5904\u7406\u5668\u3002\u5168\u5c40\u63a7\u5236\u5668\u5efa\u8bae\u4e2d\u7684\u5904\u7406\u5668\u65b9\u6cd5\u4e0e\u57fa\u4e8e\u63a7\u5236\u5668\u7684\u5f02\u5e38\u5904\u7406\u5668\u65b9\u6cd5\u76f8\u540c\uff0c\u5728\u63a7\u5236\u5668\u7c7b\u65e0\u6cd5\u5904\u7406\u5f02\u5e38\u65f6\u4f7f\u7528\u3002<\/p>\n<\/li>\n

  3. \n

    HandlerExceptionResolver<\/h3>\n

    \u5bf9\u4e8e\u901a\u7528\u5f02\u5e38\uff0c\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u63d0\u4f9b\u9759\u6001\u9875\u9762\u670d\u52a1\u3002Spring\u6846\u67b6\u63d0\u4f9b\u4e86HandlerExceptionResolver\u63a5\u53e3\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9e\u73b0\u5b83\u6765\u521b\u5efa\u5168\u5c40\u5f02\u5e38\u5904\u7406\u5668\u3002\u4e4b\u6240\u4ee5\u6709\u8fd9\u79cd\u989d\u5916\u7684\u5b9a\u4e49\u5168\u5c40\u5f02\u5e38\u5904\u7406\u5668\u7684\u65b9\u5f0f\uff0c\u662f\u56e0\u4e3aSpring\u6846\u67b6\u8fd8\u63d0\u4f9b\u4e86\u9ed8\u8ba4\u5b9e\u73b0\u7c7b\uff0c\u6211\u4eec\u53ef\u4ee5\u5728Spring\u914d\u7f6e\u6587\u4ef6\u4e2d\u5b9a\u4e49\uff0c\u4ee5\u83b7\u53d6Spring\u6846\u67b6\u7684\u5f02\u5e38\u5904\u7406\u4f18\u52bf\u3002SimpleMappingExceptionResolver\u662f\u9ed8\u8ba4\u7684\u5b9e\u73b0\u7c7b\uff0c\u5b83\u5141\u8bb8\u6211\u4eec\u914d\u7f6eexceptionMappings\uff0c\u6211\u4eec\u53ef\u4ee5\u6307\u5b9a\u8981\u4e3a\u7279\u5b9a\u5f02\u5e38\u4f7f\u7528\u7684\u8d44\u6e90\u3002\u6211\u4eec\u8fd8\u53ef\u4ee5\u8986\u76d6\u5b83\u4ee5\u6839\u636e\u6211\u4eec\u5e94\u7528\u7a0b\u5e8f\u7684\u7279\u5b9a\u66f4\u6539\u521b\u5efa\u81ea\u5df1\u7684\u5168\u5c40\u5904\u7406\u5668\uff0c\u4f8b\u5982\u8bb0\u5f55\u5f02\u5e38\u6d88\u606f\u3002<\/p>\n<\/li>\n<\/ol>\n

    \u8ba9\u6211\u4eec\u521b\u5efa\u4e00\u4e2aSpring MVC\u9879\u76ee\uff0c\u5728\u5176\u4e2d\u6211\u4eec\u5c06\u63a2\u8ba8\u57fa\u4e8e\u63a7\u5236\u5668\u3001\u57fa\u4e8eAOP\u548c\u57fa\u4e8e\u5f02\u5e38\u89e3\u6790\u5668\u7684\u5f02\u5e38\u548c\u9519\u8bef\u5904\u7406\u65b9\u6cd5\u7684\u5b9e\u73b0\u3002\u6211\u4eec\u8fd8\u5c06\u7f16\u5199\u4e00\u4e2a\u5f02\u5e38\u5904\u7406\u5668\u65b9\u6cd5\uff0c\u4ee5\u8fd4\u56deJSON\u54cd\u5e94\u3002\u5982\u679c\u60a8\u5bf9Spring\u4e2d\u7684JSON\u4e0d\u719f\u6089\uff0c\u8bf7\u9605\u8bfbSpring Restful JSON\u6559\u7a0b\u3002\u6211\u4eec\u6700\u7ec8\u7684\u9879\u76ee\u5c06\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u6211\u4eec\u5c06\u9010\u4e2a\u67e5\u770b\u5e94\u7528\u7a0b\u5e8f\u7684\u6240\u6709\u7ec4\u4ef6\u3002<\/p>\n

    Spring\u5f02\u5e38\u5904\u7406\u7684Maven\u4f9d\u8d56\u9879<\/h3>\n

    \u9664\u4e86\u6807\u51c6\u7684Spring MVC\u4f9d\u8d56\u5916\uff0c\u6211\u4eec\u8fd8\u9700\u8981\u6dfb\u52a0Jackson JSON\u4f9d\u8d56\u4ee5\u652f\u6301JSON\u529f\u80fd\u3002\u4e0b\u9762\u662f\u6211\u4eec\u6700\u7ec8\u7684pom.xml\u6587\u4ef6\u5185\u5bb9\uff1a<\/p>\n

    <?xml version=\"1.0\" encoding=\"UTF-8\"?>\r\n<project xmlns=\"https:\/\/maven.apache.org\/POM\/4.0.0\" xmlns:xsi=\"https:\/\/www.w3.org\/2001\/XMLSchema-instance\"\r\n\txsi:schemaLocation=\"https:\/\/maven.apache.org\/POM\/4.0.0 https:\/\/maven.apache.org\/maven-v4_0_0.xsd\">\r\n\t<modelVersion>4.0.0<\/modelVersion>\r\n\t<groupId>com.Olivia.spring<\/groupId>\r\n\t<artifactId>SpringExceptionHandling<\/artifactId>\r\n\t<name>SpringExceptionHandling<\/name>\r\n\t<packaging>war<\/packaging>\r\n\t<version>1.0.0-BUILD-SNAPSHOT<\/version>\r\n\t<properties>\r\n\t\t<java-version>1.6<\/java-version>\r\n\t\t<org.springframework-version>4.0.2.RELEASE<\/org.springframework-version>\r\n\t\t<org.aspectj-version>1.7.4<\/org.aspectj-version>\r\n\t\t<org.slf4j-version>1.7.5<\/org.slf4j-version>\r\n\t\t<jackson.databind-version>2.2.3<\/jackson.databind-version>\r\n\t<\/properties>\r\n\t<dependencies>\r\n\t\t<!-- Jackson -->\r\n\t\t<dependency>\r\n\t\t\t<groupId>com.fasterxml.jackson.core<\/groupId>\r\n\t\t\t<artifactId>jackson-databind<\/artifactId>\r\n\t\t\t<version>${jackson.databind-version}<\/version>\r\n\t\t<\/dependency>\r\n\t\t<!-- Spring -->\r\n\t\t<dependency>\r\n\t\t\t<groupId>org.springframework<\/groupId>\r\n\t\t\t<artifactId>spring-context<\/artifactId>\r\n\t\t\t<version>${org.springframework-version}<\/version>\r\n\t\t\t<exclusions>\r\n\t\t\t\t<!-- Exclude Commons Logging in favor of SLF4j -->\r\n\t\t\t\t<exclusion>\r\n\t\t\t\t\t<groupId>commons-logging<\/groupId>\r\n\t\t\t\t\t<artifactId>commons-logging<\/artifactId>\r\n\t\t\t\t<\/exclusion>\r\n\t\t\t<\/exclusions>\r\n\t\t<\/dependency>\r\n\t\t<dependency>\r\n\t\t\t<groupId>org.springframework<\/groupId>\r\n\t\t\t<artifactId>spring-webmvc<\/artifactId>\r\n\t\t\t<version>${org.springframework-version}<\/version>\r\n\t\t<\/dependency>\r\n\r\n\t\t<!-- AspectJ -->\r\n\t\t<dependency>\r\n\t\t\t<groupId>org.aspectj<\/groupId>\r\n\t\t\t<artifactId>aspectjrt<\/artifactId>\r\n\t\t\t<version>${org.aspectj-version}<\/version>\r\n\t\t<\/dependency>\r\n\r\n\t\t<!-- Logging -->\r\n\t\t<dependency>\r\n\t\t\t<groupId>org.slf4j<\/groupId>\r\n\t\t\t<artifactId>slf4j-api<\/artifactId>\r\n\t\t\t<version>${org.slf4j-version}<\/version>\r\n\t\t<\/dependency>\r\n\t\t<dependency>\r\n\t\t\t<groupId>org.slf4j<\/groupId>\r\n\t\t\t<artifactId>jcl-over-slf4j<\/artifactId>\r\n\t\t\t<version>${org.slf4j-version}<\/version>\r\n\t\t\t<scope>runtime<\/scope>\r\n\t\t<\/dependency>\r\n\t\t<dependency>\r\n\t\t\t<groupId>org.slf4j<\/groupId>\r\n\t\t\t<artifactId>slf4j-log4j12<\/artifactId>\r\n\t\t\t<version>${org.slf4j-version}<\/version>\r\n\t\t\t<scope>runtime<\/scope>\r\n\t\t<\/dependency>\r\n\t\t<dependency>\r\n\t\t\t<groupId>log4j<\/groupId>\r\n\t\t\t<artifactId>log4j<\/artifactId>\r\n\t\t\t<version>1.2.15<\/version>\r\n\t\t\t<exclusions>\r\n\t\t\t\t<exclusion>\r\n\t\t\t\t\t<groupId>javax.mail<\/groupId>\r\n\t\t\t\t\t<artifactId>mail<\/artifactId>\r\n\t\t\t\t<\/exclusion>\r\n\t\t\t\t<exclusion>\r\n\t\t\t\t\t<groupId>javax.jms<\/groupId>\r\n\t\t\t\t\t<artifactId>jms<\/artifactId>\r\n\t\t\t\t<\/exclusion>\r\n\t\t\t\t<exclusion>\r\n\t\t\t\t\t<groupId>com.sun.jdmk<\/groupId>\r\n\t\t\t\t\t<artifactId>jmxtools<\/artifactId>\r\n\t\t\t\t<\/exclusion>\r\n\t\t\t\t<exclusion>\r\n\t\t\t\t\t<groupId>com.sun.jmx<\/groupId>\r\n\t\t\t\t\t<artifactId>jmxri<\/artifactId>\r\n\t\t\t\t<\/exclusion>\r\n\t\t\t<\/exclusions>\r\n\t\t\t<scope>runtime<\/scope>\r\n\t\t<\/dependency>\r\n\r\n\t\t<!-- @Inject -->\r\n\t\t<dependency>\r\n\t\t\t<groupId>javax.inject<\/groupId>\r\n\t\t\t<artifactId>javax.inject<\/artifactId>\r\n\t\t\t<version>1<\/version>\r\n\t\t<\/dependency>\r\n\r\n\t\t<!-- Servlet -->\r\n\t\t<dependency>\r\n\t\t\t<groupId>javax.servlet<\/groupId>\r\n\t\t\t<artifactId>servlet-api<\/artifactId>\r\n\t\t\t<version>2.5<\/version>\r\n\t\t\t<scope>provided<\/scope>\r\n\t\t<\/dependency>\r\n\t\t<dependency>\r\n\t\t\t<groupId>javax.servlet.jsp<\/groupId>\r\n\t\t\t<artifactId>jsp-api<\/artifactId>\r\n\t\t\t<version>2.1<\/version>\r\n\t\t\t<scope>provided<\/scope>\r\n\t\t<\/dependency>\r\n\t\t<dependency>\r\n\t\t\t<groupId>javax.servlet<\/groupId>\r\n\t\t\t<artifactId>jstl<\/artifactId>\r\n\t\t\t<version>1.2<\/version>\r\n\t\t<\/dependency>\r\n\r\n\t\t<!-- Test -->\r\n\t\t<dependency>\r\n\t\t\t<groupId>junit<\/groupId>\r\n\t\t\t<artifactId>junit<\/artifactId>\r\n\t\t\t<version>4.7<\/version>\r\n\t\t\t<scope>test<\/scope>\r\n\t\t<\/dependency>\r\n\t<\/dependencies>\r\n\t<build>\r\n\t\t<plugins>\r\n\t\t\t<plugin>\r\n\t\t\t\t<artifactId>maven-eclipse-plugin<\/artifactId>\r\n\t\t\t\t<version>2.9<\/version>\r\n\t\t\t\t<configuration>\r\n\t\t\t\t\t<additionalProjectnatures>\r\n\t\t\t\t\t\t<projectnature>org.springframework.ide.eclipse.core.springnature<\/projectnature>\r\n\t\t\t\t\t<\/additionalProjectnatures>\r\n\t\t\t\t\t<additionalBuildcommands>\r\n\t\t\t\t\t\t<buildcommand>org.springframework.ide.eclipse.core.springbuilder<\/buildcommand>\r\n\t\t\t\t\t<\/additionalBuildcommands>\r\n\t\t\t\t\t<downloadSources>true<\/downloadSources>\r\n\t\t\t\t\t<downloadJavadocs>true<\/downloadJavadocs>\r\n\t\t\t\t<\/configuration>\r\n\t\t\t<\/plugin>\r\n\t\t\t<plugin>\r\n\t\t\t\t<groupId>org.apache.maven.plugins<\/groupId>\r\n\t\t\t\t<artifactId>maven-compiler-plugin<\/artifactId>\r\n\t\t\t\t<version>2.5.1<\/version>\r\n\t\t\t\t<configuration>\r\n\t\t\t\t\t<source>1.6<\/source>\r\n\t\t\t\t\t<target>1.6<\/target>\r\n\t\t\t\t\t<compilerArgument>-Xlint:all<\/compilerArgument>\r\n\t\t\t\t\t<showWarnings>true<\/showWarnings>\r\n\t\t\t\t\t<showDeprecation>true<\/showDeprecation>\r\n\t\t\t\t<\/configuration>\r\n\t\t\t<\/plugin>\r\n\t\t\t<plugin>\r\n\t\t\t\t<groupId>org.codehaus.mojo<\/groupId>\r\n\t\t\t\t<artifactId>exec-maven-plugin<\/artifactId>\r\n\t\t\t\t<version>1.2.1<\/version>\r\n\t\t\t\t<configuration>\r\n\t\t\t\t\t<mainClass>org.test.int1.Main<\/mainClass>\r\n\t\t\t\t<\/configuration>\r\n\t\t\t<\/plugin>\r\n\t\t<\/plugins>\r\n\t<\/build>\r\n<\/project>\r\n<\/code><\/pre>\n
    \u6211\u5df2\u7ecf\u5c06Spring Framework\u3001AspectJ\u3001Jackson\u548cslf4j\u7684\u7248\u672c\u66f4\u65b0\u4e3a\u6700\u65b0\u7248\u672c\u3002<\/p>\n
    Spring MVC \u5f02\u5e38\u5904\u7406\u90e8\u7f72\u63cf\u8ff0\u7b26<\/h3>\n
    \u8fd9\u662f\u6587\u7ae0\u300aSpring MVC \u5f02\u5e38\u5904\u7406- @ControllerAdvice, @ExceptionHandler, HandlerExceptionResolver\u300b\u7684\u7b2c3\u90e8\u5206\uff08\u51716\u90e8\u5206\uff09\u3002<\/p>\n
    \u6211\u4eec\u7684web.xml\u6587\u4ef6\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
    <?xml version=\"1.0\" encoding=\"UTF-8\"?>\r\n<web-app version=\"2.5\" xmlns=\"https:\/\/java.sun.com\/xml\/ns\/javaee\"\r\n\txmlns:xsi=\"https:\/\/www.w3.org\/2001\/XMLSchema-instance\"\r\n\txsi:schemaLocation=\"https:\/\/java.sun.com\/xml\/ns\/javaee https:\/\/java.sun.com\/xml\/ns\/javaee\/web-app_2_5.xsd\">\r\n\r\n\t<!-- The definition of the Root Spring Container shared by all Servlets and Filters -->\r\n\t<context-param>\r\n\t\t<param-name>contextConfigLocation<\/param-name>\r\n\t\t<param-value>\/WEB-INF\/spring\/root-context.xml<\/param-value>\r\n\t<\/context-param>\r\n\t\r\n\t<!-- Creates the Spring Container shared by all Servlets and Filters -->\r\n\t<listener>\r\n\t\t<listener-class>org.springframework.web.context.ContextLoaderListener<\/listener-class>\r\n\t<\/listener>\r\n\r\n\t<!-- Processes application requests -->\r\n\t<servlet>\r\n\t\t<servlet-name>appServlet<\/servlet-name>\r\n\t\t<servlet-class>org.springframework.web.servlet.DispatcherServlet<\/servlet-class>\r\n\t\t<init-param>\r\n\t\t\t<param-name>contextConfigLocation<\/param-name>\r\n\t\t\t<param-value>\/WEB-INF\/spring\/spring.xml<\/param-value>\r\n\t\t<\/init-param>\r\n\t\t<load-on-startup>1<\/load-on-startup>\r\n\t<\/servlet>\r\n\t\t\r\n\t<servlet-mapping>\r\n\t\t<servlet-name>appServlet<\/servlet-name>\r\n\t\t<url-pattern>\/<\/url-pattern>\r\n\t<\/servlet-mapping>\r\n\r\n\t<error-page>\r\n\t\t<error-code>404<\/error-code>\r\n\t\t<location>\/resources\/404.jsp<\/location>\r\n\t<\/error-page>\r\n<\/web-app>\r\n<\/code><\/pre>\n
    \u9664\u4e86\u4e3a\u6211\u4eec\u7684Web\u5e94\u7528\u7a0b\u5e8f\u63d2\u5165Spring\u6846\u67b6\u7684\u5927\u90e8\u5206\u90e8\u5206\u5916\uff0c\u8fd8\u5b9a\u4e49\u4e86404\u9519\u8bef\u7684\u9519\u8bef\u9875\u3002\u56e0\u6b64\uff0c\u5f53\u6211\u4eec\u7684\u5e94\u7528\u7a0b\u5e8f\u51fa\u73b0404\u9519\u8bef\u65f6\uff0c\u5c06\u4f7f\u7528\u8be5\u9875\u9762\u4f5c\u4e3a\u54cd\u5e94\u3002\u6b64\u914d\u7f6e\u662f\u7531\u5bb9\u5668\u5728\u6211\u4eec\u7684Spring Web\u5e94\u7528\u7a0b\u5e8f\u629b\u51fa404\u9519\u8bef\u7801\u65f6\u4f7f\u7528\u7684\u3002<\/p>\n
    Spring\u5f02\u5e38\u5904\u7406 – \u6a21\u578b\u7c7b<\/h3>\n
    \u6211\u5df2\u5c06Employee bean\u5b9a\u4e49\u4e3a\u6a21\u578b\u7c7b\uff0c\u4f46\u5728\u6211\u4eec\u7684\u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u6211\u4eec\u53ea\u4f1a\u5728\u7279\u5b9a\u573a\u666f\u4e2d\u4f7f\u7528\u5b83\u6765\u8fd4\u56de\u6709\u6548\u7684\u54cd\u5e94\u3002\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u4f1a\u6545\u610f\u629b\u51fa\u4e0d\u540c\u7c7b\u578b\u7684\u5f02\u5e38\u3002<\/p>\n
    package com.Olivia.spring.model;\r\n\r\npublic class Employee {\r\n\r\n\tprivate String name;\r\n\tprivate int id;\r\n\r\n\tpublic String getName() {\r\n\t\treturn name;\r\n\t}\r\n\r\n\tpublic void setName(String name) {\r\n\t\tthis.name = name;\r\n\t}\r\n\r\n\tpublic int getId() {\r\n\t\treturn id;\r\n\t}\r\n\r\n\tpublic void setId(int id) {\r\n\t\tthis.id = id;\r\n\t}\r\n}\r\n<\/code><\/pre>\n
    \u7531\u4e8e\u6211\u4eec\u8fd8\u5c06\u8fd4\u56deJSON\u54cd\u5e94\uff0c\u8ba9\u6211\u4eec\u521b\u5efa\u4e00\u4e2a\u5305\u542b\u5f02\u5e38\u8be6\u7ec6\u4fe1\u606f\u7684Java bean\uff0c\u4f5c\u4e3a\u54cd\u5e94\u53d1\u9001\u51fa\u53bb\u3002<\/p>\n
    package com.Olivia.spring.model;\r\n\r\npublic class ExceptionJSONInfo {\r\n\r\n\tprivate String url;\r\n\tprivate String message;\r\n\t\r\n\tpublic String getUrl() {\r\n\t\treturn url;\r\n\t}\r\n\tpublic void setUrl(String url) {\r\n\t\tthis.url = url;\r\n\t}\r\n\tpublic String getMessage() {\r\n\t\treturn message;\r\n\t}\r\n\tpublic void setMessage(String message) {\r\n\t\tthis.message = message;\r\n\t}\r\n}\r\n<\/code><\/pre>\n
    \u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b – Spring\u5f02\u5e38\u5904\u7406<\/h3>\n
    \u8ba9\u6211\u4eec\u521b\u5efa\u4e00\u4e2a\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\uff0c\u4f9b\u6211\u4eec\u7684\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528\u3002<\/p>\n
    package com.Olivia.spring.exceptions;\r\n\r\nimport org.springframework.http.HttpStatus;\r\nimport org.springframework.web.bind.annotation.ResponseStatus;\r\n\r\n@ResponseStatus(value=HttpStatus.NOT_FOUND, reason=\"Employee Not Found\") \/\/404\r\npublic class EmployeeNotFoundException extends Exception {\r\n\r\n\tprivate static final long serialVersionUID = -3332292346834265371L;\r\n\r\n\tpublic EmployeeNotFoundException(int id){\r\n\t\tsuper(\"EmployeeNotFoundException with id=\"+id);\r\n\t}\r\n}\r\n<\/code><\/pre>\n
    \u8bf7\u6ce8\u610f\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528@ResponseStatus\u6ce8\u89e3\u4e0e\u5f02\u5e38\u7c7b\u4e00\u8d77\u4f7f\u7528\uff0c\u4ee5\u5b9a\u4e49\u5e94\u7528\u7a0b\u5e8f\u5728\u629b\u51fa\u6b64\u7c7b\u578b\u5f02\u5e38\u5e76\u7531\u6211\u4eec\u7684\u5f02\u5e38\u5904\u7406\u5b9e\u73b0\u5904\u7406\u65f6\u53d1\u9001\u7684HTTP\u72b6\u6001\u7801\u3002\u5982\u4f60\u6240\u89c1\uff0c\u6211\u5c06HTTP\u72b6\u6001\u8bbe\u7f6e\u4e3a404\uff0c\u5e76\u4e3a\u6b64\u5b9a\u4e49\u4e86\u9519\u8bef\u9875\uff0c\u56e0\u6b64\u5982\u679c\u6211\u4eec\u6ca1\u6709\u8fd4\u56de\u4efb\u4f55\u89c6\u56fe\uff0c\u6211\u4eec\u7684\u5e94\u7528\u7a0b\u5e8f\u5e94\u8be5\u4f7f\u7528\u6b64\u7c7b\u578b\u5f02\u5e38\u7684\u9519\u8bef\u9875\u3002\u6211\u4eec\u8fd8\u53ef\u4ee5\u5728\u5f02\u5e38\u5904\u7406\u5668\u65b9\u6cd5\u4e2d\u8986\u76d6\u72b6\u6001\u7801\uff0c\u5c06\u5176\u89c6\u4e3a\u9ed8\u8ba4\u7684HTTP\u72b6\u6001\u7801\uff0c\u5f53\u5f02\u5e38\u5904\u7406\u5668\u65b9\u6cd5\u6ca1\u6709\u8fd4\u56de\u4efb\u4f55\u89c6\u56fe\u9875\u4f5c\u4e3a\u54cd\u5e94\u65f6\u4f7f\u7528\u3002<\/p>\n
    Spring MVC\u5f02\u5e38\u5904\u7406 – \u63a7\u5236\u5668\u7c7b<\/h3>\n
    \u8ba9\u6211\u4eec\u6765\u67e5\u770b\u63a7\u5236\u5668\u7c7b\uff0c\u6211\u4eec\u5c06\u629b\u51fa\u4e0d\u540c\u7c7b\u578b\u7684\u5f02\u5e38\u3002<\/p>\n
    package com.Olivia.spring.controllers;\r\n\r\nimport java.io.IOException;\r\nimport java.sql.SQLException;\r\n\r\nimport javax.servlet.http.HttpServletRequest;\r\n\r\nimport org.slf4j.Logger;\r\nimport org.slf4j.LoggerFactory;\r\nimport org.springframework.stereotype.Controller;\r\nimport org.springframework.ui.Model;\r\nimport org.springframework.web.bind.annotation.ExceptionHandler;\r\nimport org.springframework.web.bind.annotation.PathVariable;\r\nimport org.springframework.web.bind.annotation.RequestMapping;\r\nimport org.springframework.web.bind.annotation.RequestMethod;\r\nimport org.springframework.web.bind.annotation.ResponseBody;\r\nimport org.springframework.web.servlet.ModelAndView;\r\n\r\nimport com.Olivia.spring.exceptions.EmployeeNotFoundException;\r\nimport com.Olivia.spring.model.Employee;\r\nimport com.Olivia.spring.model.ExceptionJSONInfo;\r\n\r\n@Controller\r\npublic class EmployeeController {\r\n\t\r\n\tprivate static final Logger logger = LoggerFactory.getLogger(EmployeeController.class);\r\n\t\r\n\t@RequestMapping(value=\"\/emp\/{id}\", method=RequestMethod.GET)\r\n\tpublic String getEmployee(@PathVariable(\"id\") int id, Model model) throws Exception{\r\n\t\t\/\/deliberately throwing different types of exception\r\n\t\tif(id==1){\r\n\t\t\tthrow new EmployeeNotFoundException(id);\r\n\t\t}else if(id==2){\r\n\t\t\tthrow new SQLException(\"SQLException, id=\"+id);\r\n\t\t}else if(id==3){\r\n\t\t\tthrow new IOException(\"IOException, id=\"+id);\r\n\t\t}else if(id==10){\r\n\t\t\tEmployee emp = new Employee();\r\n\t\t\temp.setName(\"Pankaj\");\r\n\t\t\temp.setId(id);\r\n\t\t\tmodel.addAttribute(\"employee\", emp);\r\n\t\t\treturn \"home\";\r\n\t\t}else {\r\n\t\t\tthrow new Exception(\"Generic Exception, id=\"+id);\r\n\t\t}\r\n\t\t\r\n\t}\r\n\t\r\n\t@ExceptionHandler(EmployeeNotFoundException.class)\r\n\tpublic ModelAndView handleEmployeeNotFoundException(HttpServletRequest request, Exception ex){\r\n\t\tlogger.error(\"Requested URL=\"+request.getRequestURL());\r\n\t\tlogger.error(\"Exception Raised=\"+ex);\r\n\t\t\r\n\t\tModelAndView modelAndView = new ModelAndView();\r\n\t    modelAndView.addObject(\"exception\", ex);\r\n\t    modelAndView.addObject(\"url\", request.getRequestURL());\r\n\t    \r\n\t    modelAndView.setViewName(\"error\");\r\n\t    return modelAndView;\r\n\t}\t\r\n}\r\n<\/code><\/pre>\n
    \u8bf7\u6ce8\u610f\uff0c\u5bf9\u4e8eEmployeeNotFoundException\u7684\u5904\u7406\u7a0b\u5e8f\uff0c\u6211\u8fd4\u56de\u7684\u662fModelAndView\uff0c\u56e0\u6b64HTTP\u72b6\u6001\u7801\u5c06\u88ab\u53d1\u9001\u4e3aOK\uff08200\uff09\u3002\u5982\u679c\u8fd4\u56de\u503c\u4e3avoid\uff0c\u5219HTTP\u72b6\u6001\u7801\u5c06\u88ab\u53d1\u9001\u4e3a404\u3002\u6211\u4eec\u5c06\u5728\u5168\u5c40\u5f02\u5e38\u5904\u7406\u7a0b\u5e8f\u4e2d\u7814\u7a76\u8fd9\u79cd\u5b9e\u73b0\u7c7b\u578b\u3002\u7531\u4e8e\u6211\u53ea\u5904\u7406\u63a7\u5236\u5668\u4e2d\u7684EmployeeNotFoundException\uff0c\u6240\u4ee5\u7531\u6211\u4eec\u7684\u63a7\u5236\u5668\u629b\u51fa\u7684\u6240\u6709\u5176\u4ed6\u5f02\u5e38\u90fd\u5c06\u7531\u5168\u5c40\u5f02\u5e38\u5904\u7406\u7a0b\u5e8f\u5904\u7406\u3002<\/p>\n
    @ControllerAdvice\u548c@ExceptionHandler<\/h3>\n
    \u8fd9\u662f\u6211\u4eec\u7684\u5168\u5c40\u5f02\u5e38\u5904\u7406\u5668\u63a7\u5236\u7c7b\u3002\u8bf7\u6ce8\u610f\uff0c\u8be5\u7c7b\u4f7f\u7528@ControllerAdvice\u6ce8\u89e3\u8fdb\u884c\u6807\u6ce8\u3002\u540c\u65f6\uff0c\u65b9\u6cd5\u4e5f\u4f7f\u7528@ExceptionHandler\u6ce8\u89e3\u8fdb\u884c\u6807\u6ce8\u3002<\/p>\n
    package com.Olivia.spring.controllers;\r\n\r\nimport java.io.IOException;\r\nimport java.sql.SQLException;\r\n\r\nimport javax.servlet.http.HttpServletRequest;\r\n\r\nimport org.slf4j.Logger;\r\nimport org.slf4j.LoggerFactory;\r\nimport org.springframework.http.HttpStatus;\r\nimport org.springframework.web.bind.annotation.ControllerAdvice;\r\nimport org.springframework.web.bind.annotation.ExceptionHandler;\r\nimport org.springframework.web.bind.annotation.ResponseStatus;\r\n\r\n@ControllerAdvice\r\npublic class GlobalExceptionHandler {\r\n\r\n\tprivate static final Logger logger = LoggerFactory.getLogger(GlobalExceptionHandler.class);\r\n\t\r\n\t@ExceptionHandler(SQLException.class)\r\n\tpublic String handleSQLException(HttpServletRequest request, Exception ex){\r\n\t\tlogger.info(\"SQLException Occured:: URL=\"+request.getRequestURL());\r\n\t\treturn \"database_error\";\r\n\t}\r\n\t\r\n\t@ResponseStatus(value=HttpStatus.NOT_FOUND, reason=\"IOException occured\")\r\n\t@ExceptionHandler(IOException.class)\r\n\tpublic void handleIOException(){\r\n\t\tlogger.error(\"IOException handler executed\");\r\n\t\t\/\/returning 404 error code\r\n\t}\r\n}\r\n<\/code><\/pre>\n
    \u8bf7\u6ce8\u610f\uff0c\u5bf9\u4e8eSQLException\uff0c\u6211\u5c06\u4ee5200\u7684HTTP\u72b6\u6001\u7801\u8fd4\u56dedatabase_error.jsp\u4f5c\u4e3a\u54cd\u5e94\u9875\u9762\u3002\u5bf9\u4e8eIOException\uff0c\u6211\u4eec\u4ee5404\u7684\u72b6\u6001\u7801\u8fd4\u56devoid\uff0c\u56e0\u6b64\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\u5c06\u4f7f\u7528\u6211\u4eec\u7684error-page\u3002\u6b63\u5982\u4f60\u6240\u770b\u5230\u7684\uff0c\u6211\u5728\u8fd9\u91cc\u6ca1\u6709\u5904\u7406\u5176\u4ed6\u7c7b\u578b\u7684\u5f02\u5e38\uff0c\u6211\u5c06\u8fd9\u90e8\u5206\u7559\u7ed9HandlerExceptionResolver\u5b9e\u73b0\u3002<\/p>\n
    \u5f02\u5e38\u5904\u7406\u89e3\u6790\u5668<\/h3>\n
    \u6211\u4eec\u53ea\u662f\u6269\u5c55SimpleMappingExceptionResolver\u5e76\u91cd\u5199\u5176\u4e2d\u7684\u4e00\u4e2a\u65b9\u6cd5\uff0c\u4f46\u6211\u4eec\u53ef\u4ee5\u91cd\u5199\u5b83\u6700\u91cd\u8981\u7684\u65b9\u6cd5resolveException\u6765\u8fdb\u884c\u65e5\u5fd7\u8bb0\u5f55\u5e76\u53d1\u9001\u4e0d\u540c\u7c7b\u578b\u7684\u89c6\u56fe\u9875\u9762\u3002\u4f46\u8fd9\u4e0e\u4f7f\u7528ControllerAdvice\u5b9e\u73b0\u7684\u65b9\u5f0f\u76f8\u540c\uff0c\u6240\u4ee5\u6211\u653e\u5f03\u4e86\u8fd9\u79cd\u65b9\u6cd5\u3002\u6211\u4eec\u5c06\u4f7f\u7528\u5b83\u6765\u914d\u7f6e\u6240\u6709\u5176\u4ed6\u672a\u7ecf\u6211\u4eec\u5904\u7406\u7684\u5f02\u5e38\u7684\u89c6\u56fe\u9875\u9762\uff0c\u901a\u8fc7\u54cd\u5e94\u901a\u7528\u9519\u8bef\u9875\u9762\u3002<\/p>\n
    Spring\u5f02\u5e38\u5904\u7406\u7684\u914d\u7f6e\u6587\u4ef6<\/h3>\n
    \u8fd9\u662f\u6587\u7ae0\u300aSpring MVC \u5f02\u5e38\u5904\u7406- @ControllerAdvice, @ExceptionHandler, HandlerExceptionResolver\u300b\u7684\u7b2c5\u90e8\u5206\uff08\u51716\u90e8\u5206\uff09\u3002<\/p>\n
    \u6211\u4eec\u7684Spring Bean\u914d\u7f6e\u6587\u4ef6\u5982\u4e0b\u6240\u793a\u3002spring.xml\u4ee3\u7801\uff1a<\/p>\n
    <?xml version=\"1.0\" encoding=\"UTF-8\"?>\r\n<beans:beans xmlns=\"https:\/\/www.springframework.org\/schema\/mvc\"\r\n\txmlns:xsi=\"https:\/\/www.w3.org\/2001\/XMLSchema-instance\"\r\n\txmlns:beans=\"https:\/\/www.springframework.org\/schema\/beans\"\r\n\txmlns:context=\"https:\/\/www.springframework.org\/schema\/context\"\r\n\txsi:schemaLocation=\"https:\/\/www.springframework.org\/schema\/mvc https:\/\/www.springframework.org\/schema\/mvc\/spring-mvc.xsd\r\n\t\thttps:\/\/www.springframework.org\/schema\/beans https:\/\/www.springframework.org\/schema\/beans\/spring-beans.xsd\r\n\t\thttps:\/\/www.springframework.org\/schema\/context https:\/\/www.springframework.org\/schema\/context\/spring-context.xsd\">\r\n\r\n\t<!-- DispatcherServlet\u4e0a\u4e0b\u6587\uff1a\u5b9a\u4e49\u6b64servlet\u7684\u8bf7\u6c42\u5904\u7406\u57fa\u7840\u8bbe\u65bd -->\r\n\t\r\n\t<!-- \u542f\u7528Spring MVC @Controller\u7f16\u7a0b\u6a21\u578b -->\r\n\t<annotation-driven \/>\r\n\r\n\t<!-- \u901a\u8fc7\u9ad8\u6548\u63d0\u4f9b${webappRoot}\/resources\u76ee\u5f55\u4e2d\u7684\u9759\u6001\u8d44\u6e90\u6765\u5904\u7406\/resources\/**\u7684HTTP GET\u8bf7\u6c42 -->\r\n\t<resources mapping=\"\/resources\/**\" location=\"\/resources\/\" \/>\r\n\r\n\t<!-- \u5c06@Controller\u9009\u62e9\u7684\u89c6\u56fe\u89e3\u6790\u4e3a\/WEB-INF\/views\u76ee\u5f55\u4e2d\u7684.jsp\u8d44\u6e90 -->\r\n\t<beans:bean class=\"org.springframework.web.servlet.view.InternalResourceViewResolver\">\r\n\t\t<beans:property name=\"prefix\" value=\"\/WEB-INF\/views\/\" \/>\r\n\t\t<beans:property name=\"suffix\" value=\".jsp\" \/>\r\n\t<\/beans:bean>\r\n\t\r\n\t\r\n\t<beans:bean id=\"simpleMappingExceptionResolver\" class=\"com.Olivia.spring.resolver.MySimpleMappingExceptionResolver\">\r\n\t\t<beans:property name=\"exceptionMappings\">\r\n\t\t\t<beans:map>\r\n\t\t\t\t<beans:entry key=\"Exception\" value=\"generic_error\"><\/beans:entry>\r\n\t\t\t<\/beans:map>\r\n\t\t<\/beans:property>\r\n\t\t<beans:property name=\"defaultErrorView\" value=\"generic_error\"\/>\r\n\t<\/beans:bean>\r\n\t\r\n\t<!-- \u914d\u7f6e\u4ee5\u5728\u65b9\u6cd5\u5904\u7406\u7a0b\u5e8f\u4e2d\u5c06JSON\u4f5c\u4e3a\u8bf7\u6c42\u548c\u54cd\u5e94\u63d2\u4ef6 -->\r\n\t<beans:bean class=\"org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter\">\r\n\t\t<beans:property name=\"messageConverters\">\r\n\t\t\t<beans:list>\r\n\t\t\t\t<beans:ref bean=\"jsonMessageConverter\"\/>\r\n\t\t\t<\/beans:list>\r\n\t\t<\/beans:property>\r\n\t<\/beans:bean>\r\n\t\r\n\t<!-- \u914d\u7f6eBean\u4ee5\u5c06JSON\u8f6c\u6362\u4e3aPOJO\uff0c\u53cd\u4e4b\u4ea6\u7136 -->\r\n\t<beans:bean id=\"jsonMessageConverter\" class=\"org.springframework.http.converter.json.MappingJackson2HttpMessageConverter\">\r\n\t<\/beans:bean>\r\n\t\r\n\t<context:component-scan base-package=\"com.Olivia.spring\" \/>\r\n\t\r\n<\/beans:beans>\r\n<\/code><\/pre>\n
    \u8bf7\u6ce8\u610f\u6211\u4eecWeb\u5e94\u7528\u7a0b\u5e8f\u4e2d\u7528\u4e8e\u652f\u6301JSON\u7684Bean\u914d\u7f6e\u3002\u4e0e\u5f02\u5e38\u5904\u7406\u76f8\u5173\u7684\u552f\u4e00\u90e8\u5206\u662fsimpleMappingExceptionResolver Bean\u7684\u5b9a\u4e49\uff0c\u6211\u4eec\u5c06generic_error.jsp\u5b9a\u4e49\u4e3aException\u7c7b\u7684\u89c6\u56fe\u9875\u9762\u3002\u8fd9\u786e\u4fdd\u4e86\u6211\u4eec\u5e94\u7528\u7a0b\u5e8f\u4e2d\u672a\u5904\u7406\u7684\u4efb\u4f55\u5f02\u5e38\u4e0d\u4f1a\u4f5c\u4e3a\u54cd\u5e94\u53d1\u9001\u670d\u52a1\u5668\u751f\u6210\u7684\u9519\u8bef\u9875\u9762\u3002<\/p>\n
    Spring MVC \u5f02\u5e38\u5904\u7406 JSP \u89c6\u56fe\u9875\u9762<\/h3>\n
    \u5b9e\u73b0\u89c6\u56fe\u9875\u9762<\/h3>\n
    \u662f\u65f6\u5019\u6765\u770b\u4e00\u4e0b\u6211\u4eec\u5e94\u7528\u7a0b\u5e8f\u7684\u6700\u540e\u4e00\u90e8\u5206\uff0c\u4e5f\u5c31\u662f\u6211\u4eec\u5e94\u7528\u7a0b\u5e8f\u4e2d\u5c06\u8981\u4f7f\u7528\u7684\u89c6\u56fe\u9875\u9762\u3002home.jsp\u7684\u4ee3\u7801\uff1a<\/p>\n
    <%@ taglib uri=\"https:\/\/java.sun.com\/jsp\/jstl\/core\" prefix=\"c\" %>\r\n<%@ page session=\"false\" %>\r\n<html>\r\n<head>\r\n\t<title>\u9996\u9875<\/title>\r\n<\/head>\r\n<body>\r\n\t<h3>\u4f60\u597d ${employee.name}!<\/h3><br>\r\n\t<h4>\u4f60\u7684ID\u662f ${employee.id}<\/h4>  \r\n<\/body>\r\n<\/html>\r\n<\/code><\/pre>\n
    \u5f53\u5ba2\u6237\u7aef\u8bf7\u6c42\u4e2d\u7684id\u53c2\u6570\u4e3a10\u65f6\uff0chome.jsp\u7528\u4e8e\u54cd\u5e94\u6709\u6548\u6570\u636e\u3002404.jsp\u7684\u4ee3\u7801\uff1a<\/p>\n
    <%@ page language=\"java\" contentType=\"text\/html; charset=UTF-8\"\r\n    pageEncoding=\"UTF-8\"%>\r\n<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.01 Transitional\/\/EN\" \"https:\/\/www.w3.org\/TR\/html4\/loose.dtd\">\r\n<html>\r\n<head>\r\n<meta http-equiv=\"Content-Type\" content=\"text\/html; charset=UTF-8\">\r\n<title>404\u9519\u8bef\u9875\u9762<\/title>\r\n<\/head>\r\n<body>\r\n\r\n<h2>\u8d44\u6e90\u672a\u627e\u5230\u9519\u8bef\uff0c\u8bf7\u8054\u7cfb\u652f\u6301\u4eba\u5458\u3002<\/h2>\r\n\r\n<\/body>\r\n<\/html>\r\n<\/code><\/pre>\n
    \u5f53\u6211\u4eec\u6536\u5230\u5ba2\u6237\u7aef\u8bf7\u6c42\u4e2d\u7684id\u4e3a3\u65f6\uff0c\u6211\u4eec\u4f7f\u7528404.jsp\u751f\u6210404 HTTP\u72b6\u6001\u7801\u7684\u89c6\u56fe\uff0c\u8fd9\u5e94\u8be5\u662f\u6211\u4eec\u5b9e\u73b0\u4e2d\u7684\u54cd\u5e94\u3002error.jsp\u4ee3\u7801\uff1a<\/p>\n
    <%@ page language=\"java\" contentType=\"text\/html; charset=UTF-8\"\r\n    pageEncoding=\"UTF-8\"%>\r\n<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.01 Transitional\/\/EN\" \"https:\/\/www.w3.org\/TR\/html4\/loose.dtd\">\r\n<%@ taglib uri=\"https:\/\/java.sun.com\/jsp\/jstl\/core\" prefix=\"c\" %>\r\n<html>\r\n<head>\r\n<meta http-equiv=\"Content-Type\" content=\"text\/html; charset=UTF-8\">\r\n<title>\u9519\u8bef\u9875\u9762<\/title>\r\n<\/head>\r\n<body>\r\n<h2>\u5e94\u7528\u7a0b\u5e8f\u9519\u8bef\uff0c\u8bf7\u8054\u7cfb\u652f\u6301\u4eba\u5458\u3002<\/h2>\r\n\r\n<h3>\u8c03\u8bd5\u4fe1\u606f\uff1a<\/h3>\r\n\r\n\u8bf7\u6c42\u7684URL= ${url}<br><br>\r\n\r\n\u5f02\u5e38= ${exception.message}<br><br>\r\n\r\n<strong>\u5f02\u5e38\u5806\u6808\u8ddf\u8e2a<\/strong><br>\r\n<c:forEach items=\"${exception.stackTrace}\" var=\"ste\">\r\n\t${ste}\r\n<\/c:forEach>\r\n\r\n<\/body>\r\n<\/html>\r\n<\/code><\/pre>\n
    error.jsp\u5728\u6211\u4eec\u7684\u63a7\u5236\u5668\u7c7b\u8bf7\u6c42\u5904\u7406\u65b9\u6cd5\u629b\u51faEmployeeNotFoundException\u65f6\u4f7f\u7528\u3002\u5f53\u5ba2\u6237\u7aef\u8bf7\u6c42\u4e2d\u7684id\u503c\u4e3a1\u65f6\uff0c\u6211\u4eec\u5e94\u8be5\u5728\u54cd\u5e94\u4e2d\u83b7\u5f97\u8be5\u9875\u9762\u3002database_error.jsp\u7684\u4ee3\u7801\uff1a<\/p>\n
    <%@ page language=\"java\" contentType=\"text\/html; charset=UTF-8\"\r\n    pageEncoding=\"UTF-8\"%>\r\n<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.01 Transitional\/\/EN\" \"https:\/\/www.w3.org\/TR\/html4\/loose.dtd\">\r\n<html>\r\n<head>\r\n<meta http-equiv=\"Content-Type\" content=\"text\/html; charset=UTF-8\">\r\n<title>\u6570\u636e\u5e93\u9519\u8bef\u9875\u9762<\/title>\r\n<\/head>\r\n<body>\r\n\r\n<h2>\u6570\u636e\u5e93\u9519\u8bef\uff0c\u8bf7\u8054\u7cfb\u652f\u6301\u4eba\u5458\u3002<\/h2>\r\n\r\n<\/body>\r\n<\/html>\r\n<\/code><\/pre>\n
    \u5728GlobalExceptionHandler\u7c7b\u4e2d\u914d\u7f6e\u4e86\u5f53\u6211\u4eec\u7684\u5e94\u7528\u7a0b\u5e8f\u629b\u51faSQLException\u65f6\u4f7f\u7528database_error.jsp\u3002\u5f53\u5ba2\u6237\u7aef\u8bf7\u6c42\u4e2d\u7684id\u503c\u4e3a2\u65f6\uff0c\u6211\u4eec\u5e94\u8be5\u5f97\u5230\u8fd9\u4e2a\u9875\u9762\u4f5c\u4e3a\u54cd\u5e94\u3002generic_error.jsp\u7684\u4ee3\u7801\uff1a<\/p>\n
    <%@ page language=\"java\" contentType=\"text\/html; charset=UTF-8\"\r\n    pageEncoding=\"UTF-8\"%>\r\n<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.01 Transitional\/\/EN\" \"https:\/\/www.w3.org\/TR\/html4\/loose.dtd\">\r\n<html>\r\n<head>\r\n<meta http-equiv=\"Content-Type\" content=\"text\/html; charset=UTF-8\">\r\n<title>\u901a\u7528\u9519\u8bef\u9875\u9762<\/title>\r\n<\/head>\r\n<body>\r\n\r\n<h2>\u53d1\u751f\u672a\u77e5\u9519\u8bef\uff0c\u8bf7\u8054\u7cfb\u652f\u6301\u4eba\u5458\u3002<\/h2>\r\n\r\n<\/body>\r\n<\/html>\r\n<\/code><\/pre>\n
    \u53ea\u6709\u5728\u6211\u4eec\u7684\u5e94\u7528\u4ee3\u7801\u672a\u5904\u7406\u7684\u4efb\u4f55\u5f02\u5e38\u53d1\u751f\u65f6\uff0c\u624d\u4f1a\u51fa\u73b0\u8fd9\u4e2a\u9875\u9762\u4f5c\u4e3a\u54cd\u5e94\uff0c\u5e76\u4e14simpleMappingExceptionResolver bean\u8d1f\u8d23\u5904\u7406\u3002\u5f53\u5ba2\u6237\u7aef\u8bf7\u6c42\u4e2d\u7684id\u503c\u4e0d\u662f1\u30012\u30013\u621610\u65f6\uff0c\u6211\u4eec\u5e94\u8be5\u5f97\u5230\u8fd9\u4e2a\u9875\u9762\u4f5c\u4e3a\u54cd\u5e94\u3002<\/p>\n
    \u8fd0\u884cSpring MVC\u5f02\u5e38\u5904\u7406\u5e94\u7528\u7a0b\u5e8f<\/h3>\n
    \u53ea\u9700\u5728\u60a8\u6b63\u5728\u4f7f\u7528\u7684Servlet\u5bb9\u5668\u4e2d\u90e8\u7f72\u5e94\u7528\u7a0b\u5e8f\uff0c\u672c\u793a\u4f8b\u4f7f\u7528Apache Tomcat 7\u3002\u4e0b\u9762\u7684\u56fe\u7247\u663e\u793a\u4e86\u6211\u4eec\u7684\u5e94\u7528\u7a0b\u5e8f\u6839\u636eid\u503c\u8fd4\u56de\u7684\u4e0d\u540c\u54cd\u5e94\u9875\u9762\u3002ID=10\uff0c\u6709\u6548\u7684\u54cd\u5e94\u3002ID=1\uff0c\u4f7f\u7528\u63a7\u5236\u5668\u5f02\u5e38\u5904\u7406\u7a0b\u5e8f\u3002ID=2\uff0c\u4f7f\u7528\u5168\u5c40\u5f02\u5e38\u5904\u7406\u7a0b\u5e8f\u5e76\u5c06\u89c6\u56fe\u4f5c\u4e3a\u54cd\u5e94\u3002ID=3\uff0c\u4f7f\u7528404\u9519\u8bef\u9875\u9762\u3002ID=4\uff0c\u4f7f\u7528simpleMappingExceptionResolver\u4f5c\u4e3a\u54cd\u5e94\u89c6\u56fe\u3002\u6b63\u5982\u60a8\u6240\u770b\u5230\u7684\uff0c\u6211\u4eec\u5728\u6240\u6709\u60c5\u51b5\u4e0b\u90fd\u5f97\u5230\u4e86\u9884\u671f\u7684\u54cd\u5e94\u3002<\/p>\n
    Spring\u5f02\u5e38\u5904\u7406\u7684JSON\u54cd\u5e94<\/h3>\n
    \u6211\u4eec\u7684\u6559\u7a0b\u5373\u5c06\u5b8c\u6210\uff0c\u53ea\u5269\u4e0b\u6700\u540e\u4e00\u90e8\u5206\uff0c\u5373\u6211\u5c06\u89e3\u91ca\u5982\u4f55\u5728\u5f02\u5e38\u5904\u7406\u65b9\u6cd5\u4e2d\u53d1\u9001JSON\u54cd\u5e94\u3002\u6211\u4eec\u7684\u5e94\u7528\u7a0b\u5e8f\u5177\u6709\u6240\u6709\u7684JSON\u4f9d\u8d56\u9879\uff0c\u5e76\u914d\u7f6e\u4e86jsonMessageConverter\uff0c\u6211\u4eec\u53ea\u9700\u8981\u5b9e\u73b0\u5f02\u5e38\u5904\u7406\u7a0b\u5e8f\u65b9\u6cd5\u5373\u53ef\u3002\u4e3a\u4e86\u7b80\u5355\u8d77\u89c1\uff0c\u6211\u5c06\u91cd\u65b0\u7f16\u5199EmployeeController\u7684handleEmployeeNotFoundException()\u65b9\u6cd5\uff0c\u4ee5\u8fd4\u56deJSON\u54cd\u5e94\u3002\u53ea\u9700\u66f4\u65b0EmployeeController\u7684\u5f02\u5e38\u5904\u7406\u7a0b\u5e8f\u65b9\u6cd5\u4e3a\u4ee5\u4e0b\u4ee3\u7801\uff0c\u5e76\u91cd\u65b0\u90e8\u7f72\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n
    \t@ExceptionHandler(EmployeeNotFoundException.class)\r\n\tpublic @ResponseBody ExceptionJSONInfo handleEmployeeNotFoundException(HttpServletRequest request, Exception ex){\r\n\t\t\r\n\t\tExceptionJSONInfo response = new ExceptionJSONInfo();\r\n\t\tresponse.setUrl(request.getRequestURL().toString());\r\n\t\tresponse.setMessage(ex.getMessage());\r\n\t\t\r\n\t\treturn response;\r\n\t}\r\n<\/code><\/pre>\n
    \u73b0\u5728\u5f53\u6211\u4eec\u5728\u5ba2\u6237\u7aef\u8bf7\u6c42\u4e2d\u4f7f\u7528id\u4e3a1\u65f6\uff0c\u6211\u4eec\u4f1a\u5f97\u5230\u4e0b\u9762\u56fe\u7247\u4e2d\u663e\u793a\u7684JSON\u54cd\u5e94\u3002\u8fd9\u5c31\u662fSpring\u5f02\u5e38\u5904\u7406\u548cSpring MVC\u5f02\u5e38\u5904\u7406\u7684\u5168\u90e8\u5185\u5bb9\uff0c\u8bf7\u4ece\u4e0b\u9762\u7684URL\u4e0b\u8f7d\u5e94\u7528\u7a0b\u5e8f\u5e76\u5c3d\u60c5\u4f7f\u7528\u4ee5\u83b7\u53d6\u66f4\u591a\u7684\u5b66\u4e60\u7ecf\u9a8c\u3002<\/p>\n
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