ERROR 07 七月 2010 22:30:49 [org.apache.struts.util.RequestUtils] [createActionForm] - Error creating form bean of class com.baidu.manageSystem.machineRoom.controller.BeneficiaryForm
java.lang.NullPointerException
at org.apache.struts.config.FormBeanConfig.createActionForm(FormBeanConfig.java:212)
at org.apache.struts.util.RequestUtils.createActionForm(RequestUtils.java:292)
at org.apache.struts.util.RequestUtils.createActionForm(RequestUtils.java:191)
at org.apache.struts.action.RequestProcessor.processActionForm(RequestProcessor.java:331)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:202)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.baidu.manageSystem.common.filter.EncodingFilter.doFilter(EncodingFilter.java:32)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
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:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
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:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:619)
2010-7-7 22:30:49 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet action threw exception
java.lang.IllegalArgumentException: No destination bean specified
at com.baidu.manageSystem.common.util.MyBeanUtils.convert(MyBeanUtils.java:150)
at com.baidu.manageSystem.common.util.MyBeanUtils.copyBean2Bean(MyBeanUtils.java:133)
at com.baidu.manageSystem.machineRoom.controller.BeneficiaryAction.ShowAll(BeneficiaryAction.java:51)
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:597)
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.doGet(ActionServlet.java:414)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.baidu.manageSystem.common.filter.EncodingFilter.doFilter(EncodingFilter.java:32)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
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:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
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:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:619)
WARN 07 七月 2010 22:30:49 [org.apache.struts.action.RequestProcessor] [processException] - Unhandled Exception thrown: class java.lang.IllegalArgumentException
这 错误谁遇到过,说下经验
java.lang.NullPointerException
at org.apache.struts.config.FormBeanConfig.createActionForm(FormBeanConfig.java:212)
at org.apache.struts.util.RequestUtils.createActionForm(RequestUtils.java:292)
at org.apache.struts.util.RequestUtils.createActionForm(RequestUtils.java:191)
at org.apache.struts.action.RequestProcessor.processActionForm(RequestProcessor.java:331)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:202)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.baidu.manageSystem.common.filter.EncodingFilter.doFilter(EncodingFilter.java:32)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
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:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
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:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:619)
2010-7-7 22:30:49 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet action threw exception
java.lang.IllegalArgumentException: No destination bean specified
at com.baidu.manageSystem.common.util.MyBeanUtils.convert(MyBeanUtils.java:150)
at com.baidu.manageSystem.common.util.MyBeanUtils.copyBean2Bean(MyBeanUtils.java:133)
at com.baidu.manageSystem.machineRoom.controller.BeneficiaryAction.ShowAll(BeneficiaryAction.java:51)
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:597)
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.doGet(ActionServlet.java:414)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.baidu.manageSystem.common.filter.EncodingFilter.doFilter(EncodingFilter.java:32)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
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:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
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:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:619)
WARN 07 七月 2010 22:30:49 [org.apache.struts.action.RequestProcessor] [processException] - Unhandled Exception thrown: class java.lang.IllegalArgumentException
这 错误谁遇到过,说下经验
public ActionForward ShowAll(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) throws Exception {
BeneficiaryForm f = (BeneficiaryForm) form;
Beneficiary room = new Beneficiary();
MyBeanUtils.copyBean2Bean(f, room, true);
List beneficiaryList =beneficiaryDao.queryAll();
if(beneficiaryList!=null){
request.setAttribute("beneficiaryList",beneficiaryList);
}
return indexPage_show(mapping, form, request, response);
}
java.lang.IllegalArgumentException: No destination bean specified
没有指定目标BEAN。 报空指针的错
List beneficiaryList =beneficiaryDao.queryAll();
估计在在两个方法里面,贴出来的代码好像没有出现NullPointerException的可能;
NullPointerException出先在实例调用方法或属性时右实例为Null引起的.如user.login();中user为null的时候就会出现NullPointerException
* Generated by MyEclipse Struts
* Template path: templates/java/JavaClass.vtl
*/
package com.baidu.manageSystem.machineRoom.controller;import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionMapping;import com.baidu.manageSystem.common.base.BaseForm;/**
* MyEclipse Struts
* Creation date: 06-04-2010
*
* XDoclet definition:
* @struts.form name="beneficiaryForm"
*/
public class BeneficiaryForm extends BaseForm {
/*
* Generated fields
*/ /**
*
*/
private static final long serialVersionUID = 1L; /** id property */
private String id; /** name property */
private String name; /*
* Generated Methods
*/ /**
* Method validate
* @param mapping
* @param request
* @return ActionErrors
*/
public ActionErrors validate(ActionMapping mapping,
HttpServletRequest request) {
// TODO Auto-generated method stub
return null;
} /**
* Method reset
* @param mapping
* @param request
*/
public void reset(ActionMapping mapping, HttpServletRequest request) {
// TODO Auto-generated method stub
} /**
* Returns the id.
* @return String
*/
public String getId() {
return id;
} /**
* Set the id.
* @param id The id to set
*/
public void setId(String id) {
this.id = id;
} /**
* Returns the name.
* @return String
*/
public String getName() {
return name;
} /**
* Set the name.
* @param name The name to set
*/
public void setName(String name) {
this.name = name;
}
}jsp<%@page contentType="text/html;charset=GBK"%>
<%@page import="java.util.*,com.baidu.manageSystem.machineRoom.dto.*"%><html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GBK">
<title>User management interface</title>
<style type="text/css">
<!--
.style1 {
font-weight: bold;
}
-->
</style>
</head>
<script>
document.getElementById("a").readOnly = false;
document.getElementById("b").readOnly = false;
document.getElementById("c").readOnly = false;
document.getElementById("d").readOnly = false;
document.getElementById("1").readOnly = false;
document.getElementById("2").readOnly = false;
document.getElementById("3").readOnly = false;
document.getElementById("4").readOnly = false;
/**
*用第二个表单执行修改、删除、批量修改、批量删除)
*/
function doSubmit(url){
document.forms[0].action = url;
document.forms[0].submit();
}
/**
*按主键删除
*/
function doDelete(id){
if (countMultichoice() < 1){
alert("请选择数据行");
return;
}
var bool = window.confirm("确定删除吗?");
if (bool){
var url = '${pageContext.request.contextPath}/beneficiary.do?menu=deleteById&id='+id;
doSubmit(url);
}
}
/**
*批量修改
*/
function doUpdateBulk(){
if (countMultichoice() < 1){
alert("请选择数据行");
return;
}
var bool = window.confirm("确定修改选中变量吗?");
if (!bool){
return;
}
var url = '${pageContext.request.contextPath}/beneficiary.do?menu=modifyBulkDo';
document.forms[0].code.disabled = false;
document.forms[0].user.disabled = false;
document.forms[0].enname.disabled = false;
document.forms[0].chname.disabled = false;
document.forms[0].password.disabled = false;
document.forms[0].sex.disabled = false;
document.forms[0].tel.disabled = false;
document.forms[0].mobile.disabled = false;
document.forms[0].email.disabled = false;
document.forms[0].idnumber.disabled = false;
document.forms[0].position.disabled = false;
document.forms[0].photo.disabled = false;
document.forms[0].closed.disabled = false;
document.forms[0].code.value = '';
document.forms[0].user.value = '';
document.forms[0].enname.value = '';
document.forms[0].chname.value = '';
document.forms[0].password.value = '';
document.forms[0].sex.value = '';
document.forms[0].tel.value = '';
document.forms[0].mobile.value = '';
document.forms[0].email.value = '';
document.forms[0].idnumber.value = '';
document.forms[0].position.value = '';
document.forms[0].photo.value = '';
document.forms[0].closed.value = '';
doSubmit(url);
}
/**
*全选
*/
function selectAll(box, multichoiceName){
var objs = document.getElementsByName(multichoiceName);
for (var i=0; i<objs.length; i++){
objs[i].checked = box.checked;
}
}
/**
*计算选中的复选框
*/
function countMultichoice(){
var sum = 0;
var objs = document.getElementsByName('multichoice');
for (var i=0; i<objs.length; i++){
if (objs[i].checked){
sum++;
}
}
return sum;
}
</script>
<!--获取已有-->
<%
List beneficiaryList = (List)request.getAttribute("beneficiaryList");int m = 0;
%><body>
<form name="form1" action="" method="post">
<table width="844" border="1" height="400" cellpadding="0" cellspacing="0" bordercolor="#CCFFFF" frame=void>
<tr>
<td height="38" colspan="7"><div align="center"><span class="style1">消息提示:${msg}</span></div></td>
</tr>
<tr>
<td width="42" height="24">choose</td>
<td width="105" height="24">Id</td>
<td width="105" height="24">Name</td>
</tr>
<%
//循环输出用户基本信息
for (int i = 0; beneficiaryList != null && i < beneficiaryList.size(); i++) {
Beneficiary beneficiary = (Beneficiary)beneficiaryList.get(i);
m++;
%>
<tr>
<td height="24"><input id="a" type="checkbox" name="checkbox" value="<%=i%>" readOnly></td>
<input id="b" type="hidden" name="Id<%=i%>" size="15" value="<%=beneficiary.getId()%>" readOnly>
<td height="24"><input id="c" type="text" name="Id<%=i%>" size="15" value="<%=beneficiary.getId()%>" readOnly></td>
<td height="24"><input id="d" type="text" name="name<%=i%>" size="15" value="<%=beneficiary.getName()%>" readOnly></td>
</tr>
<%
}
%>
<!--始终保持一个空行以供输入-->
<tr>
<td height="24"><input id="1" type="checkbox" name="checkbox" value="<%=m%>" readOnly></td>
<input id="2" type="hidden" name="Id<%=m%>" size="15" value="" readOnly>
<td height="24"><input id="3" type="text" name="Id<%=m%>" size="15" value="" readOnly></td>
<td height="24"><input id="4" type="text" name="name<%=m%>" size="15" value="" readOnly></td>
</tr>
<tr>
</tr>
<tr>
<td colspan="7"><div align="center"></div> <div align="center">
<a href="/iqcerp/defaultroot/iqcerp/DateAdd/employeeAdd.jsp">
<img src="file:///D|/My Documents/未命名站点 1/add.jpg">
</a>
<%
Beneficiary beneficiary= (Beneficiary)beneficiaryList.get(0);
String id=beneficiary.getId();
System.out.println("////");
System.out.println(id);
%>
<a href="javascript:doDelete('<%=id%>');"><img src="file:///D|/My Documents/未命名站点 1/refresh.jpg"></a>
<a href="javascript:doSubmit('${pageContext.request.contextPath}/beneficiary.do?menu=modifyPage&id=<%=id%>')"><img src="file:///D|/My Documents/未命名站点 1/print.jpg"></a>
</div></td>
</tr>
</table>
</form></body>
</html>
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还有你的bean在用的时候初始化了没有?
另外,你设置断点,是很好找到问题的所在的,你要先定位问题在那句话上抛出了这个异常就好改多了。