日期:2014-05-16  浏览次数:20665 次

AJAX结合JSON在火狐下可以,但是IE下不行
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>MyHtml.html</title>
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="this is my page">
    <meta http-equiv="content-type" content="text/html; charset=UTF-8">
<script type="text/javascript" src="json2.js"></script>
<script type="text/javascript">
var xmlHttp;
function doJson()
{
var cars = new car("奔驰","SLCAR00004500",50000);
var carAsJson=JSON.stringify(cars);
alert("Car object as json:\n"+carAsJson);

var url ="JSONExample?timeStamp="+new Date().getTime();
createXMLHttpRequest();
xmlHttp.open("POST",url,true);
xmlHttp.onreadystatechange=handleStateChange;
xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
xmlHttp.send(carAsJson);
}

function car(carname,carno,carprice)
{
this.carName=carname;
this.carNo=carno;
this.carPrice=carprice;
}

function createXMLHttpRequest()
{
if(window.XMLHttpRequest)
{
xmlHttp=new XMLHttpRequest();
}
if(window.ActiveXObject)
{
xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
}
}

function handleStateChange()
{
if(xmlHttp.readyState ==4 && xmlHttp.status==200)
{
parseResult();
}
}

function parseResult()
{
var responseDiv = document.getElementById("serverResponse");
if(responseDiv.hasChildNodes())
{
responseDiv.removeChild(responseDiv.childNodes[0]);
}
var responseText = document.createTextNode(xmlHttp.responseText);
responseDiv.appendChild(responseText);
}
</script>
  </head>
  
  <body>
    <form action="#">
     <input type="button" name="button" value="show Json" onclick="doJson()" />
    </form> 
    <h2>Server response:</h2>
    <div id="serverResponse"></div>
  </body>
</html>

package com.suning.study.ajax.servlet;

import java.io.BufferedReader;
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;

import org.json.JSONException;
import org.json.JSONObject;

@SuppressWarnings("serial")
public class AjaXDemo extends HttpServlet {

public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String json = readJsonStringFromRequest(request);
JSONObject obj=null;
String responseText ="";
try {