类型肯定正确,不正确的话调用size()方法也不会通过编译啊。错误信息是: 04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R java.lang.IllegalStateException [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.ejbpersistence.associations.LinkSet.checkValidTx(Unknown Source) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.ejbpersistence.associations.LinkSet.size(Unknown Source) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.gdnt.sc.ejb.session.ScheduleManagementBean.getDataFromPlanner(ScheduleManagementBean.java:142) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.gdnt.sc.ejb.session.EJSLocalStatelessScheduleManagement_754f0fb2.getDataFromPlanner(EJSLocalStatelessScheduleManagement_754f0fb2.java:79) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:41) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at java.lang.reflect.Method.invoke(Method.java:386) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.etools.utc.model.ReflectionMethodModel.invoke(ReflectionMethodModel.java:68) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.etools.utc.servlet.InvokeServlet.invoke(InvokeServlet.java:110) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.etools.utc.servlet.InvokeServlet.doPost(InvokeServlet.java:366) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at javax.servlet.http.HttpServlet.service(HttpServlet.java:760) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java:110) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._service(StrictLifecycleServlet.java:174) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.servlet.IdleServletState.service(StrictLifecycleServlet.java:313) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java:116) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java:283) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java:42) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java:40) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:983) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:564) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:200) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.srt.WebAppInvoker.doForward(WebAppInvoker.java:119) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:276) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.cache.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:71) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.cache.invocation.CacheableInvocationContext.invoke(CacheableInvocationContext.java:116) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.srp.ServletRequestProcessor.dispatchByURI(ServletRequestProcessor.java:186) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.oselistener.OSEListenerDispatcher.service(OSEListener.java:334) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.http.HttpConnection.handleRequest(HttpConnection.java:56) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:618) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:443) [04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:672)
04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R java.lang.IllegalStateException
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.ejbpersistence.associations.LinkSet.checkValidTx(Unknown Source)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.ejbpersistence.associations.LinkSet.size(Unknown Source)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.gdnt.sc.ejb.session.ScheduleManagementBean.getDataFromPlanner(ScheduleManagementBean.java:142)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.gdnt.sc.ejb.session.EJSLocalStatelessScheduleManagement_754f0fb2.getDataFromPlanner(EJSLocalStatelessScheduleManagement_754f0fb2.java:79)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:41)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at java.lang.reflect.Method.invoke(Method.java:386)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.etools.utc.model.ReflectionMethodModel.invoke(ReflectionMethodModel.java:68)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.etools.utc.servlet.InvokeServlet.invoke(InvokeServlet.java:110)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.etools.utc.servlet.InvokeServlet.doPost(InvokeServlet.java:366)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java:110)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._service(StrictLifecycleServlet.java:174)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.servlet.IdleServletState.service(StrictLifecycleServlet.java:313)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java:116)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java:283)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java:42)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java:40)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:983)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:564)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:200)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.srt.WebAppInvoker.doForward(WebAppInvoker.java:119)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:276)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.cache.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:71)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.cache.invocation.CacheableInvocationContext.invoke(CacheableInvocationContext.java:116)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.srp.ServletRequestProcessor.dispatchByURI(ServletRequestProcessor.java:186)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.oselistener.OSEListenerDispatcher.service(OSEListener.java:334)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.webcontainer.http.HttpConnection.handleRequest(HttpConnection.java:56)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:618)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:443)
[04-11-16 11:24:12:141 CST] 2f473cbc SystemErr R at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:672)
List list=new LinkedList();
for(int i=0;i<10;i++)
list.add(i+"");
Iterator it=list.listIterator();
while(it.hasNext()){
it.remove();//will throws IllegalStateException
}
System.out.print("list="+list);
}
必须改成
public static void testModList(){
List list=new LinkedList();
for(int i=0;i<10;i++)
list.add(i+"");
Iterator it=list.listIterator();
while(it.hasNext()){
it.next();
it.remove();
}
System.out.print("list="+list);
}
你可以检查一下你对iterator遍历的情况
就象 whyonly(竹迹) 说的一样啊?