jQuery ajax MD5实现用户注册即时验证功能

chenweifu

2019-04-29

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>

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持安科网。

ajax jquery