jquery实现的ajax小例子

jsp代码:

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    
    <title>My JSP 'index.jsp' starting page</title>
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->
	<script type="text/javascript" src="<%=basePath%>js/jquery-1.6.4.min.js"></script>
  </head>
  <script type="text/javascript">
  
     function ajaxrequest(){
        $.ajax({
           type:"get",
           url:"lpm",
           dataType:"text",
           data:"name=hello world&age=15",
           success:function(msg){
              $("#name").val(msg);
           }
        });
     }
     function ajaxre2(){
        $.get("lpm",{name:"lpm",age:"25"},function(msg){
           $("#wenben").val(msg);
        });
     }
     
  </script>
  
  <body>
    <input type="button" id="name" value="按钮" onclick="ajaxrequest()" />
    <input type="text" id="wenben" onfocus="ajaxre2()"/>
  </body>
</html>

 

web.xml配置servlet:

  <servlet>
    <servlet-name>lpm</servlet-name>
    <servlet-class>com.chinasoft.lpm</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>lpm</servlet-name>
    <url-pattern>/lpm</url-pattern>
  </servlet-mapping>

 

 

servlet代码:

package com.chinasoft;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class lpm extends HttpServlet {

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		response.setContentType("text/html");
		PrintWriter out = response.getWriter();
		
		String name=request.getParameter("name");
		String age=request.getParameter("age");
		out.println(name+":"+age);	
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

	   this.doGet(request, response);
		
	}

}

 

 

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