HandlerExceptionResolver 全局异常拦截器 报错

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3-Dec-2017 15:49:09.225 SEVERE [http-nio-80-exec-30] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [mvc-dispatcher] in context with path [] threw exception [Request processing failed; nested exception is java.lang.ClassCastException: org.springframework.web.servlet.resource.DefaultServletHttpRequestHandler cannot be cast to org.springframework.web.method.HandlerMethod] with root cause      java.lang.ClassCastException: org.springframework.web.servlet.resource.DefaultServletHttpRequestHandler cannot be cast to org.springframework.web.method.HandlerMethod         at interceptor.GlobalExceptionResolver.resolveException(GlobalExceptionResolver.java:25)         at org.springframework.web.servlet.DispatcherServlet.processHandlerException(DispatcherServlet.java:1222)         at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1034)         at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:984)         at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901)         at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)         at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)         at javax.servlet.http.HttpServlet.service(HttpServlet.java:635)         at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)         at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)         at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)         at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)         at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)         at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504)         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)         at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)         at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)         at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)         at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)         at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790)         at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459)         at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)         at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)         at java.lang.Thread.run(Thread.java:748)

报错原因: 后台的异常拦截器对handel类型转换失败造成的: 

解决办法在handel转换前进行判断:

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if(o instanceof HandlerMethod){      String methodName = ((HandlerMethod) o).getMethod().getName();      String className  = ((HandlerMethod)o).getBeanType().getSimpleName();      logger.error("异常信息>>>>>ClassName:"+className+".....method:"+methodName+".....",e); }