ajax请求servlet简略Demo
日期：2014-05-16 浏览次数：20786 次
ajax请求servlet简单Demo
index.jsp:
<%@ 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>
<base href="<%=basePath%>">
<script type="text/javascript">
var xmlHttp;
function createXMLHttpRequest()
{
try{
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
catch(e)
{
try{
xmlHttp = new XMLHttpRequest();
}
catch(e)
{
xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
}
}
}
function startRequest()
{
createXMLHttpRequest();
var url = "http://localhost:8080/ajax/servlet/ajaxServlet?timestamp="+ new Date().getTime() +"&username=pangbo&password=12345";
xmlHttp.open("GET",url,true);
xmlHttp.onreadystatechange = handleXMLHttpRequest;
xmlHttp.send(null);
}
function handleXMLHttpRequest()
{
if(xmlHttp.readyState==4)
{
if(xmlHttp.status==200)
{
document.getElementById("hints").style.color="yellow";
alert(xmlHttp.responseText);
}
}
}
</script>
</head>
<body>
<%=basePath%>
<input name="username" value="" type="text"/>
<input name="password" value="" type="text"/>
<input name="submit" value="提交" type="button" onclick="startRequest()"/>
<p id="hints">hello ajax!!</p>
</body>
</html>
?ajaxServlet.java:
?
package com.ac.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.*;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class ajaxServlet extends HttpServlet{
public void doGet(HttpServletRequest request,HttpServletResponse response) throws IOException,ServletException
{
String username = request.getParameter("username");
String password = request.getParameter("password");
String responseText = username+"的密码是"+password+"请牢记！！！！";
System.out.println(responseText);
PrintWriter out = response.getWriter() ;
out.println(responseText);
out.close();
}
}
?
web.xml文件配置同上一篇日志
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