最近在线上系统发现下面的异常信息：

    2014-10-11 11:14:09 ERROR [org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerExceptionResolver.doResolveException(143)]- Invoking request method resulted in exception : public static native long java.lang.System.currentTimeMillis()
    java.lang.IllegalArgumentException: Invalid handler method return value: 1412997249242
            at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerExceptionResolver.getModelAndView(AnnotationMethodHandlerExceptionResolver.java:410)
            at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerExceptionResolver.doResolveException(AnnotationMethodHandlerExceptionResolver.java:140)
            at org.springframework.web.servlet.handler.AbstractHandlerExceptionResolver.resolveException(AbstractHandlerExceptionResolver.java:136)
            at org.springframework.web.servlet.DispatcherServlet.processHandlerException(DispatcherServlet.java:1120)
            at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:944)
            at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
            at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
            at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789)
            at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
            at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
            at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
            at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
            at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
            at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
            at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
            at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
            at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
            at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
            at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
            at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
            at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:555)
            at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
            at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
            at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
            at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
            at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
            at java.lang.Thread.run(Thread.java:619)

检查发现是Spring 3.1的bug。已经在Spring3.2版本中修复。

解决这个问题最简单的办法就是升级Spring的版本。

参考资料：

• https://jira.spring.io/browse/SPR-9138( https://jira.spring.io/browse/SPR-9138 )
• http://stackoverflow.com/questions/5652233/spring-mvc-exception-invoking-request-method-resulted-in-exception-public-st( http://stackoverflow.com/questions/5652233/spring-mvc-exception-invoking-request-method-resulted-in-exception-public-st )