TA的每日心情 | 开心 2021-3-12 23:18 |
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签到天数: 2 天 [LV.1]初来乍到
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一、处理ajax请求的jsp文件:auto.jsp
<%@ page contentType="text/HTML; charset=gb2312" %> <%
//设置输出信息的格式及字符集
response.setContentType("text/xml; charset=UTF-8");
response.setHeader("Cache-Control","no-cache");
out.println("<response>");
for(int i=0;i<2;i++){
out.println("<name>"+(int)(Math.random()*10)+
"型笔记本</name>");
out.println("<count>" +(int)(Math.random()*100)+ "</count>");
}
out.println("</response>");
out.close();
%>
二、发送ajax请求的html文件:autoRefresh.html <head>
<META http-equiv=Content-Type content="text/html; charset=gb2312">
</head>
<script language="javascript">
- var XMLHttpReq;
- //创建XMLHttpRequest对象
- function createXMLHttpRequest() {
- if(window.XMLHttpRequest) { //Mozilla 浏览器
- XMLHttpReq = new XMLHttpRequest();
- }
- else if (window.ActiveXObject) { // IE浏览器
- try {
- XMLHttpReq = new ActiveXObject("Msxml2.XMLHTTP");
- } catch (e) {
- try {
- XMLHttpReq = new ActiveXObject("Microsoft.XMLHTTP");
- } catch (e) {}
- }
- }
- }
- //发送请求函数
- function sendRequest() {
- createXMLHttpRequest();
- var url = "auto.jsp";
- XMLHttpReq.open("GET", url, true);
- XMLHttpReq.onreadystatechange = processResponse;//指定响应函数
- XMLHttpReq.send(null); // 发送请求
- }
- // 处理返回信息函数
- function processResponse() {
- if (XMLHttpReq.readyState == 4) { // 判断对象状态
- if (XMLHttpReq.status == 200) { // 信息已经成功返回,开始处理信息
- DisplayHot();
- setTimeout("sendRequest()", 1000);
- } else { //页面不正常
- window.alert("您所请求的页面有异常。");
- }
- }
- }
- function DisplayHot() {
- var name = XMLHttpReq.responseXML.getElementsByTagName("name")[0].firstChild.nodeValue;
- var count = XMLHttpReq.responseXML.getElementsByTagName("count")[0].firstChild.nodeValue;
- document.getElementById("product").innerHTML = name;
- document.getElementById("count").innerHTML = count;
- }
复制代码 </script> <body onload =sendRequest()>
<table style="BORDER-COLLAPSE: collapse" borderColor=#111111 cellSpacing=0 cellPadding=0 width=200 bgColor=#f5efe7 border=0>
<TR>
<TD align=middle bgColor=#dbc2b0 height=19 colspan="2"><B>正在热卖的笔记本</B> </TD>
</TR>
<tr>
<td height="20"> 型号:</td>
<td height="20" id="product"> </td>
</tr>
<tr>
<td height="20"> 销售数量:</td>
<td height="20" id="count"> </td>
</tr>
</body>
</table>
源码下载:http://file.javaxxz.com/2014/10/13/055405593.zip |
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