在编译的时候爆出这样的错误：
org.apache.jasper.JasperException: Cannot find any information on property 'userPhone' in a bean of type 'Bean.Sender'
jsp代码：
<%--
Document : sender
Created on : 2008-3-17, 14:01:17
Author : Administrator
--%>
<%@page contentType="text/html;charset=gb2312" pageEncoding="UTF-8"%>
<%@page import="java.util.*"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=gb2312">
<title>JSP Page</title>
</head>
<body>
<form method="POST" action="">
绑定用户ID：<input type="text" name="userPhone" value="" /><br>
绑定命令：<input type="text" name="command" value="" /><br>
<input type="radio" name="command" value="single" />单次定位
<input type="radio" name="command" value="consequance" />连续定位
<input type="radio" name="command" value="cease" />停止连续定位
<input type="radio" name="command" value="shutLED" />关闭定位器LED<br>
<input type="reset" value="重置" name="reset" />
<input type="submit" value="提交" name="submit" /><br>
</form>
<%
String commands=request.getParameter("command");
//String userPhone=request.getParameter("userPhone");
String msgPrefix[]={"GG","GM","GS","GL"};
String feedback="";
if(commands.equals("single"))
feedback=new String(msgPrefix[0]);
if(commands.equals("consequance"))
feedback=new String(msgPrefix[1]);
if(commands.equals("cease"))
feedback=new String(msgPrefix[2]);
if(commands.equals("shutLED"))
feedback=new String(msgPrefix[3]);
%>
<jsp:useBean id="sender" class="Bean.Sender" scope="page"/>
<jsp:setProperty name="sender" property="userPhone" param="userPhone"/>
<jsp:setProperty name="sender" property="sendData" param="<%=feedback%>"/>
<jsp:getProperty name="sender" property="userPhone"/>
<jsp:getProperty name="sender" property="sendData"/>
<%
//sender.sendCommands();
%>
<h2>first try,Hello World!</h2>
</body>
</html>
javabean代码：
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package Bean;
import java.net.*;
import java.io.*;
/**
*
* @author Administrator
*/