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Ò»¡¢´¦ÀíajaxÇëÇóµÄjspÎļþ£ºauto.jsp
<%@ page contentType="text/html; charset=gb2312" %>
<%
//ÉèÖÃÊä³öÐÅÏ¢µÄ¸ñʽ¼°×Ö·û¼¯
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)+
"ÐͱʼDZ¾</name>");
out.println("<count>" +(int)(Math.random()*100)+ "</count>");
}
out.println("</response>");
out.close();
%>
¶þ¡¢·¢ËÍajaxÇëÇóµÄhtmlÎļþ£ºautoRefresh.html
<head>
<META http-equiv=Content-Type content="text/html; charset=gb2312">
</head>
<script language="javascript">
var XMLHttpReq;
//´´½¨XMLHttpRequest¶ÔÏó
function createXMLHttpRequest() {
if(window.XMLHttpRequest) { //Mozilla ä¯ÀÀÆ÷
XMLHttpReq = new XMLHttpRequest();
}
else if (window.ActiveXObject) { // IEä¯ÀÀÆ÷
try {
XMLHttpReq = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try {
XMLHttpReq = new ActiveXObject("Microsoft.XMLHTTP");
} catch (e) {}
}
}
}
//·¢ËÍÇëÇóº¯Êý
function sendRequest() {
createXMLHttpRequest();
var url = "auto.jsp";
XMLHttpReq.open("GET", url, true);
XMLHttpReq.onreadystatechange = processResponse;//Ö¸¶¨ÏìÓ¦º¯Êý
XMLHttpReq.send(null); // ·¢ËÍÇëÇó
}
// ´¦Àí·µ»ØÐÅÏ¢º¯Êý
function processResponse() {
if (XMLHttpReq.readyState == 4) { // Åж϶ÔÏó״̬
if (XMLHttpReq.status == 200) { // ÐÅÏ¢ÒѾ³É¹¦·µ»Ø£¬¿ªÊ¼´¦ÀíÐÅÏ¢
DisplayHot();
setTimeout("sendRequest()", 1000);
} else { //Ò³Ãæ²»Õý³£
window.alert("ÄúËùÇëÇóµÄÒ³ÃæÓÐÒì³£¡£");
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<%@ page info="Random Image Show"
pageEncoding="UTF-8" contentType="image/jpg"
autoFlush="true" buffer="16kb" session="false" import="java.io.FileInputStream"
%>< ......
AJAXÀà
// AJAXÀà
function AJAXRequest() {
var xmlObj = false;
var CBfunc,ObjSelf;
ObjSelf=this;
try { xmlObj=new XMLHttpRequest; }
catch(e) {
try { xmlObj=new ActiveXObject("MSXML2.XMLHTTP"); }
catch(e2) {
try { xmlObj=new ActiveXObject("Microsoft.XMLHTTP"); }
catch(e ......