急！！！SSH开发，报出错误，大家帮忙看看吧！！

Question

 启动TOMCAT5.5后，访问开发的系统，显示了主页面，查询信息也可以正常进行，可是在一个页面里点击一个链接之后，出错！页面显示的结果如下：
HTTP Status 500 - --------------------------------------------------------------------------------type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception org.apache.jasper.JasperException
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:460)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:355)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
root cause javax.servlet.ServletException
org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:545)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:486)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.jsp.my_jsp._jspService(my_jsp.java:90)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
root cause java.lang.NullPointerException
org.hibernate.tuple.AbstractEntityTuplizer.createProxy(AbstractEntityTuplizer.java:372)
org.hibernate.persister.entity.AbstractEntityPersister.createProxy(AbstractEntityPersister.java:3121)
org.hibernate.event.def.DefaultLoadEventListener.createProxyIfNecessary(DefaultLoadEventListener.java:232)
org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:173)
org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:87)
org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:862)
org.hibernate.impl.SessionImpl.internalLoad(SessionImpl.java:830)
org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:266)
org.hibernate.type.EntityType.resolve(EntityType.java:303)
org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:116)
org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:842)
org.hibernate.loader.Loader.doQuery(Loader.java:717)
org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
org.hibernate.loader.Loader.doList(Loader.java:2145)
org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2029)
org.hibernate.loader.Loader.list(Loader.java:2024)
org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:375)
org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:308)
org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:153)
org.hibernate.impl.SessionImpl.list(SessionImpl.java:1106)
org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
net.cool9.houselease.dao.imp.BaseDaoImp.query(BaseDaoImp.java:445)
net.cool9.houselease.dao.imp.TblZfxxDaoImp.query(TblZfxxDaoImp.java:75)
net.cool9.houselease.biz.imp.TblZfxxBizImp.getByUser(TblZfxxBizImp.java:60)
net.cool9.houselease.web.action.TblZfxxAction.getByUser(TblZfxxAction.java:136)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke(Method.java:585)
org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:280)
org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:216)
org.springframework.web.struts.DelegatingActionProxy.execute(DelegatingActionProxy.java:110)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.jsp.my_jsp._jspService(my_jsp.java:90)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

Answer 1

org.apache.jsp.my_jsp._jspService(my_jsp.java:90) 
root cause java.lang.NullPointerException 

Answer 2

点击链接要访问的页面代码如下：
<%@ taglib prefix="bean" uri="/WEB-INF/struts-bean.tld"%>
<%@ taglib prefix="logic" uri="/WEB-INF/struts-logic.tld"%>
<%@ taglib prefix="html" uri="/WEB-INF/struts-html.tld"%>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ page import="net.cool9.houselease.entity.TblUser"%>
<%@ include file="check.jsp"%>
<%
if (request.getAttribute("zfxxList") == null) {
TblUser user = (TblUser) request.getSession().getAttribute("user");
    int aa = user.getUid();
request.getRequestDispatcher("zfxx.do?op=getByUser&uid=" + aa).forward(request, response);
return;
}
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<HTML>
<HEAD>
<TITLE>衮雪出租房</TITLE>
<meta http-equiv="Content-Type" content="text/html; charset=GBK"> <link href="style/mycss.css" rel="stylesheet" type="text/css" />
<link href="style/texts.css" rel="stylesheet" type="text/css" />
<link href="style/btn.css" rel="stylesheet" type="text/css" /> </HEAD>
<BODY BGCOLOR=#FFFFFF LEFTMARGIN=0 TOPMARGIN=0 MARGINWIDTH=0
MARGINHEIGHT=0> <table width="780" border="0" align="center" cellpadding="0"
cellspacing="0">
<tr>
<td colspan="5">
<img src="images/top.jpg" width="780" height="213">
</td>
</tr>
<tr>
<td colspan="5">
<img src="images/middle1.jpg" width="780" height="47">
</td>
</tr>
<tr>
<td width="38" background="images/middle2.jpg">
&nbsp;
</td>
<td width="172" valign="top"> <script language="javascript">
function login() {
if (document.myForm.uname.value == "") {
alert("用户名不能为空");
return false;
} else if (document.myForm.upass.value == "") {
alert("密码不能为空");
return false;
} else {
return true;
}
}
</script>
<table align="center">
<tr>
<td width=''>
<font color='red'>当前用户：${user.uname }</font>
</td>
</tr>
<tr>
<td width='150'>
<a href="pass.jsp">修改密码</a>
</td>
</tr>
<tr>
<td width='150'>
<a href="my.jsp">管理我的租房信息</a>
</td>
</tr>
<tr>
<td width='150'>
<a href="list.jsp">查看所有租房信息</a>
</td>
</tr>
<tr>
<td width='100'>
<a href="post.jsp">发布租房信息</a>
</td>
</tr>
<tr>
<td width='100'>
<a href="index.jsp">返回首页</a>
</td>
</tr>
<tr>
<td width='100'>
<a href="logout.jsp">[注销]</a>
</td>
</tr>
</table>
</td>
<td width="35" background="images/layout_24.gif">
&nbsp;
</td>
<td width="495">
<table>
<tr>
<td width="3%">
&nbsp;
</td>
<td width="97%"> <table width='450' border='0'>
<tr>
<TD>
标题
</TD>
<TD width='100' align='center'>
月租金 </TD>
<TD width='110' align='center'> 发布日期
</TD>
<TD width='50'>
&nbsp;
</TD>
<TD width='50'>
&nbsp;
</TD> </tr><tr>
<td colspan='5'>
<hr />
</td>
</tr>
<logic:notEmpty name="zfxxList">
<logic:iterate id="zfxxEntity" name="zfxxList">
<tr>
<td>
<a href='detail.jsp?id=${zfxxEntity.fwid }'>${zfxxEntity.title}</a> </td> <td align='center' style='height: 30px;'>${zfxxEntity.zj}元</td>
<td align='center'>
<bean:write name="zfxxEntity" property="date"format="yyyy-MM-dd" /> </td>
<td align='center' style='height: 30px;'>
<a href='javascript:;'onclick="if(confirm('是否删除？'))window.location.href='zfxx.do?op=del&id=${zfxxEntity.fwid }';">[删除]</a>
</td>
<td align='center' style='height: 30px;'>
<a href='edit.jsp?id=${zfxxEntity.fwid }'>[修改]</a>
</td> </tr>
</logic:iterate>
</logic:notEmpty>
<logic:empty name="zfxxList">
<tr>
<td colspan='5' align='center'>
您还没有发布信息，现在就去
<a href="post.jsp">发布一条</a>！
</td>
</tr>
</logic:empty>
<tr>
<td colspan='5'>
<hr />
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td colspan="2"></td>
</tr>
</table>
</td>
<td width="40" background="images/middle4.jpg">
&nbsp;
</td> </tr> <tr>
<td colspan="5"><img src="images/bottom.jpg" width="780" height="82">
</td>
</tr>
</table>
<P align="center">
2009 Shaanxi HanZHong Shaanxi University of Technology
</P>
<br />
</BODY>
</HTML>

Answer 3

这是myeclipse里面启动TOMCAT后访问开发系统后点击问题链接后出现的信息，我分两次贴出来
2009-05-27 23:05:33 org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:711)Servlet.service() for servlet action threw exception
 java.lang.NullPointerException
at org.hibernate.tuple.AbstractEntityTuplizer.createProxy(AbstractEntityTuplizer.java:372)
at org.hibernate.persister.entity.AbstractEntityPersister.createProxy(AbstractEntityPersister.java:3121)
at org.hibernate.event.def.DefaultLoadEventListener.createProxyIfNecessary(DefaultLoadEventListener.java:232)
at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:173)
at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:87)
at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:862)
at org.hibernate.impl.SessionImpl.internalLoad(SessionImpl.java:830)
at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:266)
at org.hibernate.type.EntityType.resolve(EntityType.java:303)
at org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:116)
at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:842)
at org.hibernate.loader.Loader.doQuery(Loader.java:717)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
at org.hibernate.loader.Loader.doList(Loader.java:2145)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2029)
at org.hibernate.loader.Loader.list(Loader.java:2024)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:375)
at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:308)
at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:153)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1106)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
at net.cool9.houselease.dao.imp.BaseDaoImp.query(BaseDaoImp.java:445)
at net.cool9.houselease.dao.imp.TblZfxxDaoImp.query(TblZfxxDaoImp.java:75)
at net.cool9.houselease.biz.imp.TblZfxxBizImp.getByUser(TblZfxxBizImp.java:60)
at net.cool9.houselease.web.action.TblZfxxAction.getByUser(TblZfxxAction.java:136)
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:280)
at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:216)
at org.springframework.web.struts.DelegatingActionProxy.execute(DelegatingActionProxy.java:110)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
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.ApplicationDispatcher.invoke(ApplicationDispatcher.java:679)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:461)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:399)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
at org.apache.jsp.my_jsp._jspService(my_jsp.java:90)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
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:172)
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:174)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:875)
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(Thread.java:595)

Answer 4

2009-05-27 23:05:33 org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:253)Servlet.service() for servlet jsp threw exception
 java.lang.NullPointerException
at org.hibernate.tuple.AbstractEntityTuplizer.createProxy(AbstractEntityTuplizer.java:372)
at org.hibernate.persister.entity.AbstractEntityPersister.createProxy(AbstractEntityPersister.java:3121)
at org.hibernate.event.def.DefaultLoadEventListener.createProxyIfNecessary(DefaultLoadEventListener.java:232)
at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:173)
at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:87)
at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:862)
at org.hibernate.impl.SessionImpl.internalLoad(SessionImpl.java:830)
at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:266)
at org.hibernate.type.EntityType.resolve(EntityType.java:303)
at org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:116)
at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:842)
at org.hibernate.loader.Loader.doQuery(Loader.java:717)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
at org.hibernate.loader.Loader.doList(Loader.java:2145)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2029)
at org.hibernate.loader.Loader.list(Loader.java:2024)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:375)
at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:308)
at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:153)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1106)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
at net.cool9.houselease.dao.imp.BaseDaoImp.query(BaseDaoImp.java:445)
at net.cool9.houselease.dao.imp.TblZfxxDaoImp.query(TblZfxxDaoImp.java:75)
at net.cool9.houselease.biz.imp.TblZfxxBizImp.getByUser(TblZfxxBizImp.java:60)
at net.cool9.houselease.web.action.TblZfxxAction.getByUser(TblZfxxAction.java:136)
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:280)
at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:216)
at org.springframework.web.struts.DelegatingActionProxy.execute(DelegatingActionProxy.java:110)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
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.ApplicationDispatcher.invoke(ApplicationDispatcher.java:679)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:461)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:399)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
at org.apache.jsp.my_jsp._jspService(my_jsp.java:90)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
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:172)
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:174)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:875)
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(Thread.java:595)

Answer 5

你的struts配置文件怎么写的，是否将所有Action都转换成org.springframework.web.struts.DelegatingActionProxy类型没有?
空指针，可能是代理对象没有创建！

Answer 6

org.apache.jasper.JasperException: Exception in JSP: /my.jsp:118:  if (request.getAttribute("zfxxList") == null) {
9:  TblUser user = (TblUser) request.getSession().getAttribute("user");
10:      int aa = user.getUid();
11:  request.getRequestDispatcher("zfxx.do?op=getByUser&uid=" + aa).forward(request, response);
12:  return;
13:  }
14: %>
第11行错在哪里？

Answer 7

STRUTS文件如下：
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.1//EN" "http://jakarta.apache.org/struts/dtds/struts-config_1_1.dtd"><struts-config>
<data-sources />
<form-beans>
<form-bean name="tblFwlxForm"
type="net.cool9.houselease.web.form.TblFwlxForm" />
<form-bean name="tblJdForm"
type="net.cool9.houselease.web.form.TblJdForm" />
<form-bean name="tblQxForm"
type="net.cool9.houselease.web.form.TblQxForm" />
<form-bean name="tblUserForm"
type="net.cool9.houselease.web.form.TblUserForm" />
<form-bean name="tblZfxxForm"
type="net.cool9.houselease.web.form.TblZfxxForm" />
<form-bean name="tblZfxxViewForm"
type="net.cool9.houselease.web.form.TblZfxxViewForm" />
</form-beans>
<global-exceptions />
<global-forwards />
<action-mappings>
<action name="tblFwlxForm" path="/fwlx" parameter="op"
type="org.springframework.web.struts.DelegatingActionProxy">
<forward name="show" path="/index.jsp" />
</action>
<action name="tblJdForm" path="/jd" parameter="op"
type="org.springframework.web.struts.DelegatingActionProxy">
<forward name="show" path="/index.jsp" />
</action>
<action name="tblQxForm" path="/qx" parameter="op"
type="org.springframework.web.struts.DelegatingActionProxy">
<forward name="show" path="/index.jsp" />
</action>
<action name="tblUserForm" path="/user" parameter="op"
type="org.springframework.web.struts.DelegatingActionProxy">
<forward name="regOk" path="/regok.jsp" />
<forward name="regError" path="/error.jsp?err=0" />
<forward name="loginError" path="/error.jsp?err=1" />
</action>
<action name="tblZfxxForm" path="/zfxx" parameter="op"
type="org.springframework.web.struts.DelegatingActionProxy">
<forward name="index" path="/index.jsp" />
<forward name="post" path="/post.jsp" />
<forward name="post_confirm" path="/post_confirm.jsp" />
<forward name="post_ok" path="/list.jsp" />
<forward name="detail" path="/detail.jsp" />
<forward name="my" path="/my.jsp" />
<forward name="edit" path="/edit.jsp" />
</action>
<action name="tblZfxxViewForm" path="/zfxxview" parameter="op"
type="org.springframework.web.struts.DelegatingActionProxy">
<forward name="list" path="/list.jsp" />
</action>
</action-mappings>
<message-resources
parameter="net.cool9.houselease.web.ApplicationResources" />
</struts-config>

Answer 8

int aa = user.getUid(); 
可能是你的aa值为空。。