org.apache.catalina.core.ContainerBase.

Question

java.lang.ClassCastException: com.crinode.mbank.form.POpForm 
at com.crinode.mbank.action.POpAction.Opinsert(POpAction.java:105) struts没配好吧，action和form没对应

Answer 1

POpAction.java文件的第105行出现了强制转换的错误，是由类型不匹配引起的

Answer 2

POpAction.java中的105行：我是这么写的 POpGroupForm gf=(POpGroupForm) form;

Answer 3

”struts没配好吧，action和form没对应“具体点说好吗？是不是跟页面的<form action="">有关的》？？

Answer 4

那说明form不是一个POpGroupForm的实例，你可以用form.getClass().getName()打出来看看

Answer 5

40564 [http-8080-Processor25] WARN  org.apache.struts.action.RequestProcessor  - Unhandled Exception thrown: class java.lang.ClassCastException
40564 [http-8080-Processor25] ERROR org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/PMgt].[action]  - Servlet.service() for servlet action threw exception
java.lang.ClassCastException: com.crinode.mbank.form.POpForm
at com.crinode.mbank.action.POpAction.Opinsert(POpAction.java:111)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:270)
at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:187)
at org.springframework.web.struts.DelegatingActionProxy.execute(DelegatingActionProxy.java:110)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:874)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Unknown Source)
哎还是这样，我是初学者。