化妆品电商网站模板,开个广告公司大概需要多少钱,杭州seo公司排名,公司网站建设的不足文章目录 前言版本说明测试 Demo1、自定义过滤器 DemoFilter2、自定义业务异常 ServiceException3、自定义异常处理类 DemoExceptionHandler4、DemoController5、请求测试 问题分析1、日志打印记录2、Debug 方法 解决方案1、修改自定义过滤器2、请求测试 解决方案分析1、日志打… 文章目录 前言版本说明测试 Demo1、自定义过滤器 DemoFilter2、自定义业务异常 ServiceException3、自定义异常处理类 DemoExceptionHandler4、DemoController5、请求测试 问题分析1、日志打印记录2、Debug 方法 解决方案1、修改自定义过滤器2、请求测试 解决方案分析1、日志打印记录2、Debug 方法 对比总结扩展Filter、Interceptor、ControllerAdvice、Aspect 执行顺序 附录附录1直接抛出异常的详细日志 前言 最近在开发过滤器功能的时候遇到一个有趣的问题 在 FilterChain#doFilter 方法之前抛出了一个异常但是这个异常无法被异常处理器捕获需要使用 HandlerExceptionResolver 来处理异常。 因此本文来分析一下这个问题。 版本说明 本文使用的版本如下 Spring Bootv3.1.5Lombokv1.18.26Hutoolv5.8.15 测试 Demo Demo 打成了压缩包在文章开头可以自行下载使用。 1、自定义过滤器 DemoFilter 2、自定义业务异常 ServiceException 3、自定义异常处理类 DemoExceptionHandler 4、DemoController 5、请求测试 请求 URL http://localhost:8080/hello请求结果 返回了错误码 500且错误信息是 {timestamp: 2023-11-26T03:43:07.65500:00,status: 500,error: Internal Server Error,path: /hello }这里并没有返回理想中的结果 在自定义异常处理器重定义的错误码是 400返回信息应该是 ServiceException: / by zero。 问题分析 1、日志打印记录 根据日志的打印结果来 Debug 分析一下整个流程 2023-11-26T11:49:25.84108:00 INFO 5748 --- [ XNIO-1 task-2] space.zlyx.demo.mvc.filter.DemoFilter : DemoFilterBefore: 在请求经过过滤器之前的操作 2023-11-26T11:49:25.84208:00 ERROR 5748 --- [ XNIO-1 task-2] io.undertow.request : UT005023: Exception handling request to /hellospace.zlyx.demo.mvc.exception.ServiceException: ServiceException: / by zero # 省略详细报错完整日志可查看文末附录2023-11-26T11:49:25.84208:00 DEBUG 5748 --- [ XNIO-1 task-2] o.s.web.servlet.DispatcherServlet : ERROR dispatch for GET /error, parameters{} 2023-11-26T11:49:25.84308:00 DEBUG 5748 --- [ XNIO-1 task-2] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController#error(HttpServletRequest) 2023-11-26T11:49:25.84308:00 DEBUG 5748 --- [ XNIO-1 task-2] o.s.w.s.m.m.a.HttpEntityMethodProcessor : Using application/json, given [*/*] and supported [application/json, application/*json] 2023-11-26T11:49:25.84408:00 DEBUG 5748 --- [ XNIO-1 task-2] o.s.w.s.m.m.a.HttpEntityMethodProcessor : Writing [{timestampSun Nov 26 11:49:25 CST 2023, status500, errorInternal Server Error, path/hello}] 2023-11-26T11:49:25.84508:00 DEBUG 5748 --- [ XNIO-1 task-2] o.s.web.servlet.DispatcherServlet : Exiting from ERROR dispatch, status 500日志信息可以看出异常抛出之后没有进入异常处理器直接就写出了。 2、Debug 方法 org.springframework.web.servlet.DispatcherServlet#doService org.springframework.web.servlet.DispatcherServlet#logRequest org.springframework.web.servlet.DispatcherServlet#doDispatch // Actually invoke the handler. mv ha.handle(processedRequest, response, mappedHandler.getHandler());org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod#invokeAndHandle org.springframework.web.servlet.mvc.method.annotation.HttpEntityMethodProcessor#handleReturnValue org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor#writeWithMessageConverters 解决方案 1、修改自定义过滤器 在自定义过滤器中使用 HandlerExceptionResolver 处理异常信息 2、请求测试 请求 URL http://localhost:8080/hello请求结果 修改之后返回了正确的错误信息以及错误码。 解决方案分析 1、日志打印记录 2023-11-26T13:02:11.05308:00 INFO 11220 --- [ XNIO-1 task-2] space.zlyx.demo.mvc.filter.DemoFilter : DemoFilterBefore: 在请求经过过滤器之前的操作 2023-11-26T13:02:11.05308:00 DEBUG 11220 --- [ XNIO-1 task-2] .m.m.a.ExceptionHandlerExceptionResolver : Using ExceptionHandler space.zlyx.demo.mvc.handler.DemoExceptionHandler#handleServiceException(ServiceException, HttpServletRequest) 2023-11-26T13:02:11.05408:00 ERROR 11220 --- [ XNIO-1 task-2] s.z.d.mvc.handler.DemoExceptionHandler : 业务异常捕获Filter ServiceException: / by zero 2023-11-26T13:02:11.05408:00 DEBUG 11220 --- [ XNIO-1 task-2] m.m.a.RequestResponseBodyMethodProcessor : Using text/plain, given [*/*] and supported [text/plain, */*, application/json, application/*json] 2023-11-26T13:02:11.05408:00 DEBUG 11220 --- [ XNIO-1 task-2] m.m.a.RequestResponseBodyMethodProcessor : Writing [Filter ServiceException: / by zero] 2023-11-26T13:02:11.05508:00 DEBUG 11220 --- [ XNIO-1 task-2] .m.m.a.ExceptionHandlerExceptionResolver : Resolved [ServiceException(codenull, messageFilter ServiceException: / by zero)] 2023-11-26T13:02:11.05508:00 DEBUG 11220 --- [ XNIO-1 task-2] o.s.web.servlet.DispatcherServlet : GET /hello, parameters{} 2023-11-26T13:02:11.05508:00 DEBUG 11220 --- [ XNIO-1 task-2] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to space.zlyx.demo.mvc.controller.DemoController#hello(HttpServletRequest, HttpServletResponse) 2023-11-26T13:02:11.05508:00 INFO 11220 --- [ XNIO-1 task-2] s.z.demo.mvc.controller.DemoController : DemoController hello 2023-11-26T13:02:11.05508:00 DEBUG 11220 --- [ XNIO-1 task-2] m.m.a.RequestResponseBodyMethodProcessor : Found Content-Type:text/plain;charsetUTF-8 in response 2023-11-26T13:02:11.05508:00 DEBUG 11220 --- [ XNIO-1 task-2] m.m.a.RequestResponseBodyMethodProcessor : Writing [Hello World] 2023-11-26T13:02:11.05608:00 DEBUG 11220 --- [ XNIO-1 task-2] o.s.web.servlet.DispatcherServlet : Completed 400 BAD_REQUEST 2023-11-26T13:02:11.05608:00 INFO 11220 --- [ XNIO-1 task-2] space.zlyx.demo.mvc.filter.DemoFilter : DemoFilterAfter: 在请求经过过滤器之后的操作2、Debug 方法 org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver#doResolveHandlerMethodException org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod#invokeAndHandle DemoExceptionHandler#handleServiceException org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor#handleReturnValue org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor#writeWithMessageConverters 对比总结 经过两种不同的方式的调用对比可以得出以下结论 在 FilterChain#doFilter 之前直接抛出异常则过滤器链中断抛出异常之后结果由 HttpEntityMethodProcessor 进行处理。使用 HandlerExceptionResolver#resolveException 方法异常会被 ExceptionHandlerExceptionResolver 进行处理此时能够被异常拦截器捕获最终返回的结果由 RequestResponseBodyMethodProcessor 进行处理。使用 HandlerExceptionResolver 时因为过滤器链没有中断因此内部会继续执行 controller 方法但是请求结果已经提前输出了。 扩展 Filter、Interceptor、ControllerAdvice、Aspect 执行顺序 在没有异常的情况下各组件调用顺序如下不包含 ControllerAdvice FilterChain#doFilter 之前Interceptor#preHandleAspect#beforeControllerAspect#afterReturningAspect#afterInterceptor#postHandleInterceptor#afterCompletionFilterChain#doFilter 之后 在本文基础上顺便测试了一下 Interceptor 以及 Aspect并在各个组件中抛出异常得到的结果如下 注ControllerAdvice 即异常处理器 异常位置异常抛出方式调用方法FilterHandlerExceptionResolverFilterChain#doFilter 之前异常 ControllerAdvice Interceptor#preHandle Aspect#before Controller Aspect#afterReturning Aspect#after Interceptor#postHandle Interceptor#afterCompletion FilterChain#doFilter 之后Interceptor直接抛异常FilterChain#doFilter 之前 Interceptor#preHandle异常 ControllerAdvice FilterChain#doFilter 之后Aspect直接抛异常FilterChain#doFilter 之前 Interceptor#preHandle Aspect#before异常 ControllerAdvice Interceptor#afterCompletion FilterChain#doFilter 之后Controller直接抛异常FilterChain#doFilter 之前 Interceptor#preHandle Aspect#before Controller异常 Aspect#afterThrowing Aspect#after ControllerAdvice Interceptor#afterCompletion FilterChain#doFilter 之后 请求进入执行顺序 Filter —— Interceptor —— Aspect —— Controller 异常抛出执行顺序 Controller —— Aspect —— ControllerAdvice —— Interceptor —— Filter 附录 附录1直接抛出异常的详细日志 2023-11-26T11:49:25.84108:00 INFO 5748 --- [ XNIO-1 task-2] space.zlyx.demo.mvc.filter.DemoFilter : DemoFilterBefore: 在请求经过过滤器之前的操作 2023-11-26T11:49:25.84208:00 ERROR 5748 --- [ XNIO-1 task-2] io.undertow.request : UT005023: Exception handling request to /hellospace.zlyx.demo.mvc.exception.ServiceException: ServiceException: / by zeroat space.zlyx.demo.mvc.filter.DemoFilter.doFilter(DemoFilter.java:40) ~[classes/:na]at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67) ~[undertow-servlet-2.3.10.Final.jar:2.3.10.Final]at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) ~[undertow-servlet-2.3.10.Final.jar:2.3.10.Final]at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-6.0.13.jar:6.0.13]at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.0.13.jar:6.0.13]at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67) ~[undertow-servlet-2.3.10.Final.jar:2.3.10.Final]at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) ~[undertow-servlet-2.3.10.Final.jar:2.3.10.Final]at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-6.0.13.jar:6.0.13]at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.0.13.jar:6.0.13]at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67) ~[undertow-servlet-2.3.10.Final.jar:2.3.10.Final]at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) ~[undertow-servlet-2.3.10.Final.jar:2.3.10.Final]at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-6.0.13.jar:6.0.13]at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.0.13.jar:6.0.13]at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67) ~[undertow-servlet-2.3.10.Final.jar:2.3.10.Final]at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) ~[undertow-servlet-2.3.10.Final.jar:2.3.10.Final]at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84) ~[undertow-servlet-2.3.10.Final.jar:2.3.10.Final]at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62) ~[undertow-servlet-2.3.10.Final.jar:2.3.10.Final]at io.undertow.servlet.handlers.ServletChain$1.handleRequest(ServletChain.java:68) ~[undertow-servlet-2.3.10.Final.jar:2.3.10.Final]at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) ~[undertow-servlet-2.3.10.Final.jar:2.3.10.Final]at io.undertow.servlet.handlers.RedirectDirHandler.handleRequest(RedirectDirHandler.java:68) ~[undertow-servlet-2.3.10.Final.jar:2.3.10.Final]at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:117) ~[undertow-servlet-2.3.10.Final.jar:2.3.10.Final]at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57) ~[undertow-servlet-2.3.10.Final.jar:2.3.10.Final]at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) ~[undertow-core-2.3.10.Final.jar:2.3.10.Final]at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46) ~[undertow-core-2.3.10.Final.jar:2.3.10.Final]at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64) ~[undertow-servlet-2.3.10.Final.jar:2.3.10.Final]at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60) ~[undertow-core-2.3.10.Final.jar:2.3.10.Final]at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77) ~[undertow-servlet-2.3.10.Final.jar:2.3.10.Final]at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43) ~[undertow-core-2.3.10.Final.jar:2.3.10.Final]at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) ~[undertow-core-2.3.10.Final.jar:2.3.10.Final]at io.undertow.servlet.handlers.SendErrorPageHandler.handleRequest(SendErrorPageHandler.java:52) ~[undertow-servlet-2.3.10.Final.jar:2.3.10.Final]at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) ~[undertow-core-2.3.10.Final.jar:2.3.10.Final]at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:276) ~[undertow-servlet-2.3.10.Final.jar:2.3.10.Final]at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:135) ~[undertow-servlet-2.3.10.Final.jar:2.3.10.Final]at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:132) ~[undertow-servlet-2.3.10.Final.jar:2.3.10.Final]at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48) ~[undertow-servlet-2.3.10.Final.jar:2.3.10.Final]at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43) ~[undertow-servlet-2.3.10.Final.jar:2.3.10.Final]at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:256) ~[undertow-servlet-2.3.10.Final.jar:2.3.10.Final]at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:101) ~[undertow-servlet-2.3.10.Final.jar:2.3.10.Final]at io.undertow.server.Connectors.executeRootHandler(Connectors.java:393) ~[undertow-core-2.3.10.Final.jar:2.3.10.Final]at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:859) ~[undertow-core-2.3.10.Final.jar:2.3.10.Final]at org.jboss.threads.ContextHandler$1.runWith(ContextHandler.java:18) ~[jboss-threads-3.5.0.Final.jar:3.5.0.Final]at org.jboss.threads.EnhancedQueueExecutor$Task.run(EnhancedQueueExecutor.java:2513) ~[jboss-threads-3.5.0.Final.jar:3.5.0.Final]at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1538) ~[jboss-threads-3.5.0.Final.jar:3.5.0.Final]at org.xnio.XnioWorker$WorkerThreadFactory$1$1.run(XnioWorker.java:1282) ~[xnio-api-3.8.8.Final.jar:3.8.8.Final]at java.base/java.lang.Thread.run(Thread.java:833) ~[na:na]2023-11-26T11:49:25.84208:00 DEBUG 5748 --- [ XNIO-1 task-2] o.s.web.servlet.DispatcherServlet : ERROR dispatch for GET /error, parameters{} 2023-11-26T11:49:25.84308:00 DEBUG 5748 --- [ XNIO-1 task-2] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController#error(HttpServletRequest) 2023-11-26T11:49:25.84308:00 DEBUG 5748 --- [ XNIO-1 task-2] o.s.w.s.m.m.a.HttpEntityMethodProcessor : Using application/json, given [*/*] and supported [application/json, application/*json] 2023-11-26T11:49:25.84408:00 DEBUG 5748 --- [ XNIO-1 task-2] o.s.w.s.m.m.a.HttpEntityMethodProcessor : Writing [{timestampSun Nov 26 11:49:25 CST 2023, status500, errorInternal Server Error, path/hello}] 2023-11-26T11:49:25.84508:00 DEBUG 5748 --- [ XNIO-1 task-2] o.s.web.servlet.DispatcherServlet : Exiting from ERROR dispatch, status 500