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    2012-03-23 10:42:08 StandardWrapperValve[jsp]: Servlet.service() for      servlet jsp threw exception
    java.lang.NullPointerException
        at org.apache.jsp.jsp.TitleFrame_jsp._jspService(TitleFrame_jsp.java:66)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:133)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:311)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:284)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:204)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:257)
        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
        at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:245)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:199)
        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:184)
        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:164)
        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:156)
        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:972)
        at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:206)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:833)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:732)
        at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:619)
        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:688)
        at java.lang.Thread.run(Thread.java:536)

如何解决此错误？

每当我收到此错误时，我都必须重新启动 tomcat。而且我不想重新启动tomcat可以给我正确的解决方案吗？

4

1 回答 1

2

您需要修复 TitleFrame.jsp 中的错误。有些东西是空的，你假设它不是。

您可以在 Tomcat 的工作目录中查找 TitleFrame_jsp.java 文件，问题将出现在该文件的第 66 行。您应该能够轻松地将其映射回 jsp 中的相关行。

于 2012-05-17T14:59:26.617 回答