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鐢变簬ajax涓烘垜浠甫鏉ュお澶氱殑濂藉锛屾墍浠ュ湪寰堝搴旂敤涓垜浠兘浼氫紭鍏堥�夋嫨杩欑鎶�鏈紝浜庢槸鎴戜篃涓轰箣鎵�鍚稿紩锛岀幇璺熷ぇ瀹跺垎浜笅涓�涓畝鍗曠殑鍏ラ棬渚嬪瓙銆�
regist.jsp鏂囦欢锛氫竴涓畝鍗曠殑娉ㄥ唽椤甸潰
<%@ page contentType="text/html; charset=gb2312"
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>娉ㄥ唽椤甸潰</title>
<script type="text/javascript" src="http://edu.cnzz.cn/NewsInfo/js/ajax.js"> </script>
<script type="text/javascript">
<!--
function myAlert(strTitle) {
var message=document.getElementById("myDiv").innerHTML;
var win1 = new Zapatec.AlertWindow(message, {title:strTitle, modal:true, width : 580,height:330});
}
function doCheck() {
var f = document.forms[0];
if(f.username.value!="") {
document.getElementById("feedback_info").innerHTML = "绯荤粺姝ｅ湪澶勭悊鎮ㄧ殑璇锋眰锛岃绋嶅悗銆�";
send_request("GET","checkUsername.jsp?username="+f.username.value,null,"text",showFeedbackInfo);
}
else {
document.getElementById("feedback_info").innerHTML = "璇疯緭鍏ョ敤鎴峰悕绉般��";
}
}
function showFeedbackInfo() {
if (http_request.readyState == 4) { // 鍒ゆ柇瀵硅薄鐘舵��
if (http_request.status == 200) { // 淇℃伅宸茬粡鎴愬姛杩斿洖锛屽紑濮嬪鐞嗕俊鎭�
document.getElementById("feedback_info").innerHTML = http_request.responseText;
} else { //椤甸潰涓嶆甯�
alert("鎮ㄦ墍璇锋眰鐨勯〉闈㈡湁寮傚父銆�");
}
}
}
//-->
</script>
</head>
<body>
<form name="form1" method="post" action="">
<table style="font-size:12px;">
<tr>
<td width="80">鐢ㄦ埛鍚嶏細</td>
<td><input type="text" name="username" onblur="doCheck()"></td>
</tr>
<tr><td colspan="2"><span id="feedback_info" style="color:#FF0000"></span></td>
<tr>
<tr>
<td>涓�绾у瘑鐮侊細</td>
<td><input type="password" name="pwd"></td>
</tr>
</table>
</form>
</body>
</html>
js鏂囦欢婧愪唬鐮佸涓嬶細锛坅jax.js锛�
//瀹氫箟XMLHttpRequest瀵硅薄瀹炰緥
var http_request = false;
//瀹氫箟鍙鐢ㄧ殑http璇锋眰鍙戦�佸嚱鏁�
function send_request(method,url,content,responseType,callback) {//鍒濆鍖栥�佹寚瀹氬鐞嗗嚱鏁般�佸彂閫佽姹傜殑鍑芥暟
http_request = false;
//寮�濮嬪垵濮嬪寲XMLHttpRequest瀵硅薄
if(window.XMLHttpRequest) { //Mozilla 娴忚鍣�
http_request = new XMLHttpRequest();
if (http_request.overrideMimeType) {//璁剧疆MiME绫诲埆
http_request.overrideMimeType("text/xml");
}
}
else if (window.ActiveXObject) { // IE娴忚鍣�
try {
http_request = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try {
http_request = new ActiveXObject("Microsoft.XMLHTTP");
} catch (e) {}
}
}
if (!http_request) { // 寮傚父锛屽垱寤哄璞″疄渚嬪け璐�
window.alert("涓嶈兘鍒涘缓XMLHttpRequest瀵硅薄瀹炰緥.");
return false;
}
if(responseType.toLowerCase()=="text") {
//http_request.onreadystatechange = processTextResponse;
http_request.onreadystatechange = callback;
}
else if(responseType.toLowerCase()=="xml") {
//http_request.onreadystatechange = processXMLResponse;
http_request.onreadystatechange = callback;
}
else {
window.alert("鍝嶅簲绫诲埆鍙傛暟閿欒銆�");
return false;
}
// 纭畾鍙戦�佽姹傜殑鏂瑰紡鍜孶RL浠ュ強鏄惁寮傛鎵ц涓嬫浠ｇ爜
if(method.toLowerCase()=="get") {
http_request.open(method, url, true);
}
else if(method.toLowerCase()=="post") {
http_request.open(method, url, true);
http_request.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
}
else {
window.alert("http璇锋眰绫诲埆鍙傛暟閿欒銆�");
return false;
}
http_request.send(content);
}
// 澶勭悊杩斿洖鏂囨湰鏍煎紡淇℃伅鐨勫嚱鏁�
function processTextResponse() {
if (http_request.readyState == 4) { // 鍒ゆ柇瀵硅薄鐘舵��
if (http_request.status == 200) { // 淇℃伅宸茬粡鎴愬姛杩斿洖锛屽紑濮嬪鐞嗕俊鎭�
//alert(http_request.responseText);
alert("Text鏂囨。鍝嶅簲銆�");
} else { //椤甸潰涓嶆甯�
alert("鎮ㄦ墍璇锋眰鐨勯〉闈㈡湁寮傚父銆�");
}
}
}
//澶勭悊杩斿洖鐨刋ML鏍煎紡鏂囨。鐨勫嚱鏁�
function processXMLResponse() {
if (http_request.readyState == 4) { // 鍒ゆ柇瀵硅薄鐘舵��
if (http_request.status == 200) { // 淇℃伅宸茬粡鎴愬姛杩斿洖锛屽紑濮嬪鐞嗕俊鎭�
//alert(http_request.responseXML);
alert("XML鏂囨。鍝嶅簲銆�");
} else { //椤甸潰涓嶆甯�
alert("鎮ㄦ墍璇锋眰鐨勯〉闈㈡湁寮傚父銆�");
}
}
}
checkUsername.jsp婧愪唬鐮佸涓嬶細
<%@ page contentType="text/html; charset=gb2312"
%>
<%@ page import="com.kemei.user.util.MemberManager" %>
<%
String name=request.getParameter("username");
MemberManager manager=new MemberManager();
if(manager.searchByUsername(username))
out.println("鐢ㄦ埛鍚嶇О["+username+"]宸茬粡琚敞鍐岋紝璇锋洿鎹㈠叾浠栫敤鎴峰悕绉板啀娉ㄥ唽銆�");
else out.println("鐢ㄦ埛鍚嶇О["+username+"]灏氭湭琚敞鍐岋紝鎮ㄥ彲浠ョ户缁��");
manager.closeDAO();
%>
鍒版锛屼竴涓畝鍗曠殑寮傛楠岃瘉鐢ㄦ埛鍚嶇殑绋嬪簭宸茬粡瀹屾垚锛屽綋浣犺緭鍏ュ畬鐢ㄦ埛鍚嶅悗锛屽垏鎹㈠厜鏍囷紝灏嗕細寮傛楠岃瘉鏁版嵁鐨勬纭�э紝浣嗘槸锛屽湪浣跨敤鏃惰繕閬囧埌鐐逛笉闂锛屾渶鍒濊緭鍏ヨ嫳鏂囨垨鏁板瓧楠岃瘉鐢ㄦ埛鍚嶆椂锛屾病闂锛屼絾鎴戣緭鍏ヤ腑鏂囬毦鏃跺嵈鍑虹幇涔辩爜锛屼簬鏄checkUsername.jsp杩涜浜嗕慨鏀癸紝淇敼鍚庢簮绋嬪簭濡備笅锛�
<%@ page contentType="text/html; charset=gb2312"
%>
<%@ page import="com.kemei.user.util.MemberManager" %>
<%
String name=request.getParameter("username");
String username=new String(name.getBytes("ISO8859-1"),"gb2312");
MemberManager manager=new MemberManager();
if(manager.searchByUsername(username))
out.println("鐢ㄦ埛鍚嶇О["+username+"]宸茬粡琚敞鍐岋紝璇锋洿鎹㈠叾浠栫敤鎴峰悕绉板啀娉ㄥ唽銆�");
else out.println("鐢ㄦ埛鍚嶇О["+username+"]灏氭湭琚敞鍐岋紝鎮ㄥ彲浠ョ户缁��");
manager.closeDAO();
%>
淇敼鍚庯紝閲嶆柊杈撳叆涓枃娴嬭瘯锛屾病鍑虹幇涔辩爜锛屽埌姝や竴涓畝鍗曠殑ajax搴旂敤灏辩粨鏉熶簡銆�
http://blog.csdn.net/tomison/archive/2007/01/22/1490430.aspx
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