ajax
<%@ page language="java" contentType="text/html;charset=utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@ include file="baseReference.jsp"%>
<%@ taglib prefix="spring" uri="../tld/spring.tld"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Login</title>
</head>
<body>
<form name="form" action="${basePath}/user/userInformation.action" method="post">
用户名：<input type="text" id="username" name="username"/>
密 码：<input type="password" id="password" name="password"/>
验证码：<input type="text" id="checkcode" name="checkcode"/><img id="code" src="${basePath}/user/createCode.action"><a href="#" onclick="changeCode()">看不清，换一张</a>
<input type="button" name="sm" value="登录" onclick="checkRegisted()">
<a href="${basePath}/user/register.action">注 册</a>
</form>
</body>
<script type="text/javascript">
function checkRegisted() {
var username = $("#username").val();
var password = $("#password").val();
if(null == username || null == password) {
alert("用户名或密码不能为空!");
return;
}
var url = "${basePath}/user/checkRegisted.action";
$.post(url,{username : username,password : password}, function(result) {
if("false" == result){
alert("用户名或密码错误！或者权限异常！");
} else {
alert("欢迎登陆！");
document.form.submit();
}
});
var url = "${basePath}/user/checkCode.action";
$.post(url,{checkcode : checkcode}, function(result) {
if("true" == result) {
alert("ok!");
return;
} else {
alert("RE");
}
});
}
function getXMLRequest(){
var request;
try{
request = new XMLHttpRequest();
}catch(e){
try{
request = new ActiveXObject("Microsoft.XMLHttp");
}catch(e){
alert("AJAX!!!");
return null;
}
}
return request;
}
//改变验证码
function changeCode(){
var request = getXMLRequest();//XMLHttpRequest
request.onreadystatechange = function(){
if(request.readyState == 4){
document.getElementById("code").src = "${basePath}/user/createCode.action?" + new Date();
}
};
request.open("GET","${basePath}/user/createCode.action",true);
request.send(null);
}
</script>
</html>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@ include file="baseReference.jsp"%>
<%@ taglib prefix="spring" uri="../tld/spring.tld"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Login</title>
</head>
<body>
<form name="form" action="${basePath}/user/userInformation.action" method="post">
用户名：<input type="text" id="username" name="username"/>
密 码：<input type="password" id="password" name="password"/>
验证码：<input type="text" id="checkcode" name="checkcode"/><img id="code" src="${basePath}/user/createCode.action"><a href="#" onclick="changeCode()">看不清，换一张</a>
<input type="button" name="sm" value="登录" onclick="checkRegisted()">
<a href="${basePath}/user/register.action">注 册</a>
</form>
</body>
<script type="text/javascript">
function checkRegisted() {
var username = $("#username").val();
var password = $("#password").val();
if(null == username || null == password) {
alert("用户名或密码不能为空!");
return;
}
var url = "${basePath}/user/checkRegisted.action";
$.post(url,{username : username,password : password}, function(result) {
if("false" == result){
alert("用户名或密码错误！或者权限异常！");
} else {
alert("欢迎登陆！");
document.form.submit();
}
});
var url = "${basePath}/user/checkCode.action";
$.post(url,{checkcode : checkcode}, function(result) {
if("true" == result) {
alert("ok!");
return;
} else {
alert("RE");
}
});
}
function getXMLRequest(){
var request;
try{
request = new XMLHttpRequest();
}catch(e){
try{
request = new ActiveXObject("Microsoft.XMLHttp");
}catch(e){
alert("AJAX!!!");
return null;
}
}
return request;
}
//改变验证码
function changeCode(){
var request = getXMLRequest();//XMLHttpRequest
request.onreadystatechange = function(){
if(request.readyState == 4){
document.getElementById("code").src = "${basePath}/user/createCode.action?" + new Date();
}
};
request.open("GET","${basePath}/user/createCode.action",true);
request.send(null);
}
</script>
</html>