请教一个struts标签问题

Question

错误提示
type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception org.apache.jasper.JasperException: An exception occurred processing JSP page /display.jsp at line 3532:                </tr>
33:              <logic:iterate id="stu" name="stus">
34:                <tr>
35:            <td><bean:write name="stu" property="StuId"/></td>     
36:              <td><bean:write name="stu" property="StuName"/></td>  
37:               <td><bean:write name="stu" property="StuSex"/></td>  
38:                <td><bean:write name="stu" property="StuBir"/></td>  
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:524)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:417)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1085)
org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:398)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:241)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
root cause javax.servlet.ServletException: javax.servlet.jsp.JspException: No getter method for property: "StuId" of bean: "stu"
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:850)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:779)
org.apache.jsp.display_jsp._jspService(display_jsp.java:168)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1085)
org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:398)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:241)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
root cause javax.servlet.jsp.JspException: No getter method for property: "StuId" of bean: "stu"
org.apache.struts.taglib.TagUtils.lookup(TagUtils.java:987)
org.apache.struts.taglib.bean.WriteTag.doStartTag(WriteTag.java:225)
org.apache.jsp.display_jsp._jspx_meth_bean_005fwrite_005f0(display_jsp.java:187)
org.apache.jsp.display_jsp._jspService(display_jsp.java:121)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1085)
org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:398)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:241)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.14 logs.
jsp页面：
<%@ page language="java" import="java.util.*" pageEncoding="gb2312"%>
<%@page import="prj5.form.DisplayForm"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean"%> 
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html"%>
 <%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic"%>
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'quaryForm.jsp' starting page</title>
    

  </head>
  
  <body>
        显示结果：
      
         <table bgColor="#00ff80">
           <tr>
           <td>学号</td>     
            <td>姓名</td>  
            <td>性别</td>  
             <td>出身年月</td>  
              <td>家庭住址</td>    
               </tr>
               
             <logic:iterate id="stu" name="stus">
             
               <tr>
           <td><bean:write name="stu" property="StuId"/></td>     
             <td><bean:write name="stu" property="StuName"/></td>  
              <td><bean:write name="stu" property="StuSex"/></td>  
               <td><bean:write name="stu" property="StuBir"/></td>  
                <td><bean:write name="stu" property="StuAdd"/></td>  
                  
               </tr>
             </logic:iterate>  
              
               
         </table>
  </body>
</html>

Answer 1

No getter method for property: "StuId" of bean: "stu"
你的java bean中有没有get方法

Answer 2

可是我用这段代码可以显示：
<%ArrayList stus= (ArrayList)request.getAttribute("stus"); %>
  
         <table bgColor="#00ff80">
           <tr>
           <td>学号</td>     
            <td>姓名</td>  
            <td>性别</td>  
             <td>出身年月</td>  
              <td>家庭住址</td>    
               </tr>
               <%for (int i=0;i<stus.size();i++){
                    Student stu=(Student) stus.get(i);
               %>
                <tr>
           <td><%=stu.getStuId() %></td>     
             <td><%=stu.getStuName() %></td>  
              <td><%=stu.getStuSex() %></td>  
               <td><%=stu.getStuBir() %></td>  
                <td><%=stu.getStuAdd() %></td>  
                  
               </tr>
               <% } %>

Answer 3

换成标签后就提示错误了，我用的服务器是tomcat6

Answer 4

这个是DisplayForm.java
package prj5.form;import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
public class DisplayForm extends ActionForm {
private String StuId;
private String StuName;
private String StuSex;
private String StuBir;
private String StuAdd;
public String getStuId() {
return StuId;
}
public void setStuId(String stuId) {
StuId = stuId;
}

public String getStuName() {
return StuName;
}
public void setStuName(String stuName) {
StuName = stuName;
}
public String getStuSex() {
return StuSex;
}
public void setStuSex(String stuSex) {
StuSex = stuSex;
}
public String getStuBir() {
return StuBir;
}
public void setStuBir(String stuBir) {
StuBir = stuBir;
}
public String getStuAdd() {
return StuAdd;
}
public void setStuAdd(String stuAdd) {
StuAdd = stuAdd;
}

public ActionErrors validate(ActionMapping mapping,
HttpServletRequest request) {
// TODO Auto-generated method stub
return null;
}
public void reset(ActionMapping mapping, HttpServletRequest request) {
// TODO Auto-generated method stub
}

Answer 5

这是DisplayAction.javapackage prj5.action;import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;import dao.StudentDao;
import prj5.form.DisplayForm;
public class DisplayAction extends Action {

public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{
DisplayForm displayForm = (DisplayForm) form;// TODO Auto-generated method stub

String sname = request.getParameter("sname");
        sname = new String (sname.getBytes("ISO-8859-1"));



StudentDao studentdao= new StudentDao();
ArrayList stus= studentdao.queryStuByName(sname);
System.out.println("调用dao");
request.setAttribute("stus", stus);
//跳转到display.jsp
return mapping.findForward("display");
}
}

Answer 6

这是struts-config.xml（配置文件）
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd"><struts-config>
  <data-sources />
  <form-beans >
    <form-bean name="displayForm" type="prj5.form.DisplayForm" />  </form-beans>  <global-exceptions />
  <global-forwards />
  <action-mappings >
    <action
      attribute="displayForm"
      input="quaryForm.jsp"
      name="displayForm"
      path="/display"
      scope="request"
      type="prj5.action.DisplayAction">
      <set-property property="cancellable" value="true" />
      <forward name="display" path="/display.jsp"></forward>
    </action>
    <action path="/delete" type="prj5.action.DeleteAction">
      <set-property property="cancellable" value="true" />
    </action>  </action-mappings>  <message-resources parameter="prj5.ApplicationResources" />
</struts-config>

Answer 7

是不是tomcat需要导入struts 的包？