菜鸟，在线等待，谢谢！

map.java
package email;
import java.util.*;
public class Map extends TreeMap{
   private String name,email,action;
   private int count=0;
   public Map(){}
   public void setName(String formName){
   if (formName!=""){
       name=formName;
   }
   }
   public String getName(){
       return name;
   }
   public void setEmail(String formEmail){
   if (formEmail!=""){
     email=formEmail;
     System.out.println(name);
     System.out.println(email);
   }
   }
   public String getEmail(){
      email=get(name).toString();
      return email;
   }
   public void setAction(String pageAction){
      action=pageAction;
    }
   public String getAction(){
      return action;
    }
}email.jsp
<%/*@ include file="copyright.html"*/%>
<%@ page isThreadSafe="false" import="java.util.*,email.Map" errorPage="error.jsp"%>
<jsp:useBean id="mymap" scope="session" class="email.Map"/>
<jsp:setProperty name="mymap" property="name" param="name"/>
<jsp:setProperty name="mymap" property="email" param="email"/>
<!-- this -->
<% mymap.setAction("add");%>
<html>
<head><title>email finder</title></head>
<body bgcolor="#ffffff" background="bacdground.gif" link="#000099">
<!-- the form table-->
<form method="get">
<table cellspacing="0" cellpadding="5">
<tr>
<td width="150">&nbsp;</td>
<td align="right"><h1>Email finder</h1></td>
</tr>
<tr>
<td width="150" align="right"><b>Name</b></td>
<td align="left"><input type="text" name="name" size="35"></td>
</tr>
<tr>
<td width="150" align="right"><b>Email</b></td>
<td align="left"><input type="text" name="email" size="35"></td>
</tr>
<tr>
<td width="150">&nbsp;</td>
<td align="right">Please enter a name and an email address;
</td>
</tr>
<tr>
<td width="150">&nbsp;</td>
<td align="right"><input type="submit" value="add"></td>
</tr>
<!-- here we call the put-->
<%
   String rname=request.getParameter("name");
   String remail=request.getParameter("email");
   
   if (rname!=null){
     mymap.put(rname,remail);   }
%>
<!-- the else method-->
<tr>
<td width="150">&nbsp;</td>
<td align="right">the map file has <font color="blue"><%=mymap.size()%></font> entries;</td>
</tr>
<tr>
<td width="150">&nbsp;</td>
<td align="right">
<a href="lookup.jsp">loopup</a>&nbsp;|&nbsp;<a href="delete.jsp">Delete</a>
</td>
</tr>
</table>
</form>
</body>
</html>
谢谢

解决方案 »

  1.   

    <%@ page isThreadSafe="false" import="java.util.*,email.Map" errorPage="error.jsp"%>
    ----->
    <%@ page isThreadSafe="false" import="java.util.*," errorPage="error.jsp"%>
    //去掉email.Map<jsp:setProperty name="mymap" property="name" param="name"/>
    <jsp:setProperty name="mymap" property="email" param="email"/>
    --------》
    <jsp:setProperty name="mymap" property="Name" param="name"/>
    <jsp:setProperty name="mymap" property="Email" param="email"/>
    //注意大小写问题
      

  2.   

    <jsp:setProperty name="mymap" property="name" param="name"/>
    <jsp:setProperty name="mymap" property="email" param="email"/>
    ------>
    <jsp:setProperty name="mymap" property="Name" value="name"/>
    <jsp:setProperty name="mymap" property="Email" value="email"/>