jQuery ajax MD5实现用户注册即时验证功能

实际项目中比较常用的(JQuery+AJAX+MD5)，属于即时验证，亮点是验证用户是否存在的那一项，具体内容如下

具体示例

registe.jsp

<span style="font-size: large;"><%@ page pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>注册验证</title>
<script type="text/javascript" src="md5.js"></script>
<script type="text/javascript" src="jquery-1.3.2.min.js"></script>
<link type="text/css" rel="stylesheet" href="validator.css"></link>
<script src="formValidator.js" type="text/javascript" charset="UTF-8"></script> 

<script type="text/javascript">
$(document).ready(function(){
 $.formValidator.initConfig({formid:"myform",onerror:function(msg){alert(msg)},onsuccess:function(){
 $('#pwd').val(MD5($('#pwd').val()));
 return true;
 }}); 

 $("#loginname").formValidator({onshow:"请输入用户名",onfocus:"用户名至少3个字符,最多10个字符",oncorrect:"该用户名可以注册"}).inputValidator({min:3,max:10,onerror:"你输入的用户名非法,请确认"})
 .ajaxValidator({
 type : "post",
 url : "account.do?"+Math.random(),
 datatype : "text",
 success : function(data){
 if(data==1){
 return false;
 } else{
 return true;
 }
 },
 buttons: $("#lnbtn"),
 error: function(){alert("服务器没有返回数据，可能服务器忙，请重试");},
 onerror : "该用户名存在，请更换用户名",
 oncorrect:"恭喜你,该用户名可用",
 onwait : "正在对用户名进行合法性校验，请稍候..."
 });
 $("#pwd").formValidator({onshow:"请输入密码",onfocus:"密码不能为空",oncorrect:"密码合法"}).inputValidator({min:3,empty:{leftempty:false,rightempty:false,emptyerror:"密码两边不能有空符号"},onerror:"密码不能为空,请确认"});
 $("#confirm_pwd").formValidator({onshow:"请输入重复密码",onfocus:"两次密码必须一致哦",oncorrect:"密码一致"}).inputValidator({min:1,empty:{leftempty:false,rightempty:false,emptyerror:"重复密码两边不能有空符号"},onerror:"重复密码不能为空,请确认"}).compareValidator({desid:"pwd",operateor:"=",onerror:"2次密码不一致,请确认"});
 $("#email").formValidator({onshow:"请输入邮箱",onfocus:"邮箱6-100个字符,输入正确了才能离开焦点",oncorrect:"恭喜你,你输对了",defaultvalue:"@"}).inputValidator({min:6,max:100,onerror:"你输入的邮箱长度非法,请确认"}).regexValidator({regexp:"^([\\w-.]+)@(([[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.)|(([\\w-]+.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(]?)$",onerror:"你输入的邮箱格式不正确"});
}); 

function submitForm(){
 var pwd = document.getElementById('pwd');
 pwd.value = MD5(pwd.value);
 return true;
}
</script>
</head>
<body>
<!-- 页头结束 -->
<!--　广告栏开始 -->
<!--　广告栏结束 -->
<!-- 主内容开始 -->
<div id="content">
 <!-- 注册栏开始 -->
 <div class="longBar">
 <div class="longTitle">注册新会员</div>
 <div class="longBody">
 <form id="myform" action="account.do?method=registe" method="post">
 <table width="100%" border="0" cellspacing="5" cellpadding="5">
 <tr>
 <td width="23%" align="right"><span class="redStar">*</span>会员名：</td>
 <td width="19%">
 <input name="loginname" class="text" type="text" id="loginname" tabindex="1" size="30" maxlength="20" />
 <input type="button" value="用户名是否可用" id="lnbtn"/>
 </td>
 <td width="58%"><div id="loginnameTip"></div></td>
 </tr>
 <tr>
 <td align="right"><span class="redStar">*</span>密码：</td>
 <td><input name="pwd" class="text" type="password" id="pwd" tabindex="2" size="30" maxlength="20" /></td>
 <td><div id="pwdTip"></div></td>
 </tr>
 <tr>
 <td align="right"><span class="redStar">*</span>重复密码：</td>
 <td><input name="confirm_pwd" class="text" type="password" id="confirm_pwd" tabindex="3" size="30" maxlength="20" /></td>
 <td><div id="confirm_pwdTip"></div></td>
 </tr>
 <tr>
 <td align="right"><span class="redStar">*</span>邮件地址：</td>
 <td><input id="email" class="text" tabindex="4" name="email" size="30" type="text" /></td>
 <td><div id="emailTip"></div></td>
 </tr>
 <tr>
 <td colspan="3" align="right"><div align="center">-------------------------------- 以 下 为 选 填 项 目 ----------------------------------</div></td>
 </tr>
 <tr>
 <td align="right">真实姓名：</td>
 <td><input id="username" class="text" name="username" tabindex="5" size="30" type="text" /> </td>
 <td><div id="usernameTip"></div></td>
 </tr>
 <tr>
 <td align="right">联系电话：</td>
 <td><input id="phone" class="text" name="phone" tabindex="6" size="30" type="text" /> </td>
 <td><div id="phoneTip"></div></td>
 </tr>
 <tr>
 <td align="right">手机号码：</td>
 <td><input id="mobile" class="text" name="mobile" tabindex="7" size="30" type="text" /> </td>
 <td><div id="mobileTip"></div></td>
 </tr>
 <tr>
 <td align="right">通讯地址：</td>
 <td><input id="address" class="text" name="address" tabindex="9" size="35" type="text" /> </td>
 <td><div id="addressTip"></div></td>
 </tr>
 <tr>
 <td align="right">邮政编码：</td>
 <td><input id="zipCode" class="text" name="zipCode" tabindex="10" size="30" type="text" /> </td>
 <td><div id="zipCodeTip"></div></td>
 </tr>
 <tr>
 <td align="right"></td>
 <td colspan="2"><input type="submit" class="submit" tabindex="11" value="提交注册"/></td>
 </tr>
 </table>
 </form>
 </div>
 </div>
 <!-- 注册栏结束 -->
</div>
<!-- 主内容结束 -->
<div class="hackBox"></div> 

</body>
</html></span>

AccountServlet.java

<span style="font-size: large;">package com.validator.test; 

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; 

public class AccountServlet extends HttpServlet { 

 public void doGet(HttpServletRequest request, HttpServletResponse response)
 throws ServletException, IOException {
 this.doPost(request, response); 

 }
 public void doPost(HttpServletRequest request, HttpServletResponse response)
 throws ServletException, IOException {
 String loginname=request.getParameter("loginname");
 PrintWriter out = response.getWriter();
 if(loginname.equals("abc123")){
 out.println("1");
 }else{
 out.println("0");
 }
 out.flush(); 

 } 

}</span> 

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