JIVE发布后无法发贴，报错：NullPointerException

我使用startup.bat将Tomcat服务起来之后，完全没有问题

但是，如果使用Windows的Apache Tomcat服务将Tomcat起来之后，

在输入http://localhost:8080后就出现了和楼主一样的问题。

具体出错信息如下：

java.lang.NullPointerException

at org.apache.jsp.index_jsp._jspService(index_jsp.java:481)

at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:136)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)

at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:320)

at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:294)

at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:286)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:253)

at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)

at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:564)

at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:256)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:210)

at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)

at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:564)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:190)

at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:175)

at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149)

at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:564)

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:564)

at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:974)

at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:207)

at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:637)

at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:488)

at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:568)

at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:631)

at java.lang.Thread.run(Thread.java:536)

但是在我将JAVA_HOME,TOMCAT_HOME,classpath

甚至CATALINA_HOME,CATALINA_BASE等环境变量设置之后，

仍然没有解决这个问题。

希望各位道友共同探讨这个问题，

//bow。

我的login.jsp现在也有这样的问题

而且当使用startup.bat开始Tomcat服务时，是没有这个错误的。

另外，如果是类没有找到，出错信息不应该是NullPointerException，

而是ClassNotFoundException。

所以偶不太同意楼上的观点，

希望再听听楼上的解释。

--------------------------------------------------------------------------------

下面有错误发生，请将错误报告到: Jdon

java.lang.NullPointerException

at org.apache.jsp.post_jsp._jspService(post_jsp.java:160)

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:534)