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我正在为在 Tomcat 7 上运行的 Java Web 应用程序使用 spring-mvc 和安全性。我通过扩展 AbstractAuthenticationProcessingFilter 来自定义 spring 安全性并捕获自定义异常，我有一个扩展 ExceptionHandlerExceptionResolver 的类。

现在，当我遇到异常时，无论是否运行时，我都无法在我的 tomcat 日志中看到异常的原因。Tomcat 会生成一个日志，该日志是关于 spring 安全链中的类和 ExceptionHandlerExceptionResolver 类的。

如何取回我的默认日志？

示例日志：

org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:927) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:811) javax.servlet.http.HttpServlet.service(HttpServlet.java: 621) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:796) javax.servlet.http.HttpServlet.service(HttpServlet.java:728) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter( FilterChainProxy.java:330) org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118) org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.session.SessionManagementFilter。 doFilter(SessionManagementFilter.java:103) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113) org. springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:150) org.springframework.security.web。FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java: 342) com.cagatay.deneme.server.security.AuthFilter.doFilter(AuthFilter.java:65) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web。 authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter。 doFilterInternal(WebAsyncManagerIntegrationFilter.java:50) org.springframework。web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.session.ConcurrentSessionFilter.doFilter(ConcurrentSessionFilter. java:125) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87) org.springframework.security。 web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192) org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160) org.springframework.web.filter。DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)

根本原因java.lang.NullPointerException com.cagatay.deneme.server.controller.errorhandler.ErrorController.doResolveHandlerMethodException(ErrorController.java:40) org.springframework.web.servlet.handler.AbstractHandlerMethodExceptionResolver.doResolveException(AbstractHandlerMethodExceptionResolver.java:60) org.springframework .web.servlet.handler.AbstractHandlerExceptionResolver.resolveException(AbstractHandlerExceptionResolver.java:136) org.springframework.web.servlet.DispatcherServlet.processHandlerException(DispatcherServlet.java:1148) org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java :985) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:939) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856) org.springframework.web。servlet.FrameworkServlet.processRequest(FrameworkServlet.java:915) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:811) javax.servlet.http.HttpServlet.service(HttpServlet.java:621) org.springframework。 web.servlet.FrameworkServlet.service(FrameworkServlet.java:796) javax.servlet.http.HttpServlet.service(HttpServlet.java:728) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118) org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84) org.springframework.security。 web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web。access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java: 103) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113) org.springframework.security.web。 FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:150) org.springframework.security.web.FilterChainProxy$VirtualFilterChain。doFilter(FilterChainProxy.java:342) org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) com。 cagatay.deneme.server.security.AuthFilter.doFilter(AuthFilter.java:65) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.authentication.logout。 LogoutFilter.doFilter(LogoutFilter.java:105) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter. java:50) org.springframework.web.filter.OncePerRequestFilter。doFilter(OncePerRequestFilter.java:107) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.session.ConcurrentSessionFilter.doFilter(ConcurrentSessionFilter.java:125) org. springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87) org.springframework.security.web.FilterChainProxy$VirtualFilterChain。 doFilter(FilterChainProxy.java:342) org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192) org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160) org.springframework.web。 filter.DelegatingFilterProxy。invokeDelegate(DelegatingFilterProxy.java:346) org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)

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2 回答 2

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根据堆栈跟踪，看起来您NullPointerException在com.cagatay.deneme.server.controller.errorhandler.ErrorController. 您需要找出导致此问题的原因并进行修复。

编辑：

根据AbstractHandlerMethodExceptionResolver 的文档，异常处理程序应该返回一个ModelAndView. 在您的代码中，NullPointerException抛出了 a 。现在不看你的代码，我不知道你是否重新抛出异常，但堆栈跟踪让我相信 NPE 起源于第 40 行。恕我直言，异常处理程序本身不应该抛出异常。

于 2013-02-26T15:35:45.923 回答
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在最高级别，您可以捕获任何预期的和意外的异常，并在您希望它们出现时自己手动记录它们，而不是让它们传播到 Spring 并让它自己做事。

一种方法是使用 ExceptionHandler。示例：http ://www.mkyong.com/spring-mvc/spring-mvc-exceptionhandler-example/

于 2014-12-06T01:42:09.793 回答