这个问题不知怎么解决了

Question

Tomcat6.0+ssh+Myeclipse+sqlserver2005 运行时出现
2008-6-20 21:57:30 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet action threw exception
java.lang.NullPointerException
at y2ssh.epai.xmal3.web.action.UserAction.doLogin(UserAction.java:67)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:270)
at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:187)
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:290)
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:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:595)
这是jar包的问题吗？ 如何解决？

Answer 1

此回复为自动发出,仅用于显示而已，并无任何其他特殊作用
楼主截止到2008-06-20 22:13:21的汇总数据：
注册日期:2007-5-14
上次登录:2008-6-20
发帖数:4                  发帖分:40                 
结贴数:0                  结贴分:0                  
结贴率:0.00 %        结分率:0.00 %        
如何结贴请参考这里：http://topic.csdn.net/u/20080501/09/ef7ba1b3-6466-49f6-9d92-36fe6d471dd1.html

Answer 2

UserAction.java:67看看这行，另外你的异常应该贴的不完整吧

Answer 3

java.lang.NullPointerException 
at y2ssh.epai.xmal3.web.action.UserAction.doLogin(UserAction.java:67)  
userAction 67行可能有问题

Answer 4

2008-6-20 22:23:28 org.apache.catalina.core.AprLifecycleListener init
信息: The Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: D:\Borland\JBuilder2006\jdk1.5\bin;D:\Tomcat 6.0\bin
2008-6-20 22:23:28 org.apache.coyote.http11.Http11Protocol init
信息: Initializing Coyote HTTP/1.1 on http-9000
2008-6-20 22:23:28 org.apache.catalina.startup.Catalina load
信息: Initialization processed in 1177 ms
2008-6-20 22:23:28 org.apache.catalina.core.StandardService start
信息: Starting service Catalina
2008-6-20 22:23:29 org.apache.catalina.core.StandardEngine start
信息: Starting Servlet Engine: Apache Tomcat/6.0.14
log4j:WARN No appenders could be found for logger (org.apache.struts.util.PropertyMessageResources).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN No appenders could be found for logger (org.apache.struts.util.PropertyMessageResources).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN No appenders could be found for logger (org.apache.struts.util.PropertyMessageResources).
log4j:WARN Please initialize the log4j system properly.
2008-6-20 22:23:44 org.apache.coyote.http11.Http11Protocol start
信息: Starting Coyote HTTP/1.1 on http-9000
2008-6-20 22:23:44 org.apache.jk.common.ChannelSocket init
信息: JK: ajp13 listening on /0.0.0.0:8009
2008-6-20 22:23:44 org.apache.jk.server.JkMain start
信息: Jk running ID=0 time=0/203  config=null
2008-6-20 22:23:44 org.apache.catalina.startup.Catalina start
信息: Server startup in 15662 ms
2008-6-20 22:23:52 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet action threw exception
java.lang.NullPointerException
at y2ssh.epai.xmal3.web.action.UserAction.doLogin(UserAction.java:67)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:270)
at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:187)
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:290)
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:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:595)
这是所有的异常

Answer 5

public ActionForward doLogin(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) throws IOException {
ActionForward af = null;
request.getSession().removeAttribute("user");

String username = request.getParameter("username");
String password = request.getParameter("password");
System.out.println("123");
System.out.println(username+"1232456");
System.out.println(password);

TUser item = this.userBiz.login(username, password);
67行 if (null!=item && item.getUserStatus()!=UserBiz.USER_STATUS_FORBID){//登录成功

request.getSession().setAttribute("user", item);
if (item.getUserStatus()==UserBiz.USER_STATUS_ADMIN){
response.sendRedirect("admin.jsp");
}else if (item.getUserStatus()==UserBiz.USER_STATUS_NORMAL){
response.sendRedirect("index.jsp");
}
}else{
request.setAttribute("msg", "用户名或密码错误，登陆失败！");
af = mapping.findForward("index");
}
报异常的时候就连system,out.println的东西都不显示出来 可能都没有进入这个文件