需求:做一个ajax登录
主要技术点:jquery ajax以及blur事件
当用户名输入框失去焦点的时候就会触发blur事件,然后进行ajax请求,获得结果(true或者false),如果请求结果为true,就把用户名输入框图片替换成ok,并且输出文字:恭喜您, 这个帐号可以注册,否则就替换成图片no,并且输出文字:账号已存在
源代码:
前台:
复制代码 代码如下:
<%@ Page Language="C#" MasterPageFile="~/Top_Down.master" AutoEventWireup="true" CodeFile="RegisterMember.aspx.cs"Inherits="Member_RegisterMember" Title="注册用户" %>
<asp:Content ContentPlaceHolderID="head" Runat="Server">
<link href="https://www.jb51.net/Admin/css/template.css" type="text/css" />
<link href="https://www.jb51.net/Admin/css/validationEngine.jquery.css" type="text/css" />
<script src="https://www.jb51.net/Admin/scripts/jquery-1.7.1.min.js" type="text/javascript"></script>
<script src="https://www.jb51.net/js/jquery.validationEngine.js" type="text/javascript"></script>
<script src="https://www.jb51.net/Admin/scripts/isValid.js" type="text/javascript"></script>
<script src="https://www.jb51.net/js/languages/jquery.validationEngine-zh_CN.js" type="text/javascript"></script>
<script type="text/javascript">
var IsCheck=false;
$(function(){
// binds form submission and fields to the validation engine
$("#form1").validationEngine();
//当鼠标失去焦点的时候验证
$("#txtUserName").blur(function(){
$.ajax({
url:"Data/GetMemberInfo.ashx?method=CheckExistUserName",
data:{"username":$("#txtUserName").val()},
type:"post",
success:function(text){
$("#tdUser").empty();//清空内容
var item;
if(text=="True"){
item='<img src="https://www.jb51.net/images/ok.png"/>恭喜您,这个帐号可以注册!';
IsCheck=true;
}
else
item='<img src="https://www.jb51.net/images/no.png"/>对不起,这个帐号已经有人注册了!';
$("#tdUser").append(item);
}
});
});
});
function CheckForm1()
{
if(IsCheck)
{
form1.submit();
}
else{
alert("请验证用户名");
}
}
</script>
</asp:Content>
<asp:Content ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<form action="Data/GetMemberInfo.ashx?method=SaveMemberInfo" method="post">
<div>
<div>
<div></div>
</div>
<div>
<div><p>注册新用户</p></div>
<div>
<table>
<tr>
<td>用户名：</td>
<td><input type="text"name="txtUserName"/><!--LoginName-->
</td>
<td></td>
</tr>
<tr>
<td>密码：</td>
<td><input type="password"name="txtPwd"/></td>
<td></td>
</tr>
<tr>
<td>确认密码：</td>
<td><input type="password" /></td>
<td></td>
</tr>
<tr>
<td>E-mail：</td>
<td><input type="text"id="txtEmail"/></td>
<td></td>
</tr>
<tr>
<td>验证码：</td>
<td colspan="2"><input type="text"/><imgsrc="../Admin/FileManage/VerifyChars.ashx" alt="验证码" /></td>
</tr>
<tr><td> </td></tr>
<tr>
<td colspan="3"><a href="javascript:CheckForm1()"><img src="https://www.jb51.net/images/zhuce_sumbit.png" /></a></td>
</tr>
</table>
</div>
</div>
</div>
</form>
</asp:Content>
后台事件:
复制代码 代码如下:
<%@ WebHandler Language="C#" %>
using System;
using System.Web;
using Common;
using czcraft.Model;
using czcraft.BLL;
using System.Web.SessionState;
public class GetMemberInfo : IHttpHandler,IRequiresSessionState
{
// //记录日志
private static readonly log4net.ILog logger =log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
public void ProcessRequest(HttpContext context)
{
String methodName = context.Request["method"];
if (!string.IsNullOrEmpty(methodName))
CallMethod(methodName, context);
}
/// <summary>
/// 根据业务需求调用不同的方法
/// </summary>
/// <param>方法</param>
/// <param>上下文</param>
public void CallMethod(string Method, HttpContext context)
{
switch (Method)
{
case "CheckExistUserName":
CheckExistUserName(context);
break;
//case "SearchMember":
// SearchMember(context);
// break;
case "SaveMemberInfo":
SaveMemberInfo(context);
break;
//case "RemoveMember":
// RemoveMember(context);
// break;
//case "GetMember":
// GetMember(context);
// break;
default:
return;
}
}
/// <summary>
/// 验证帐号是否存在
/// </summary>
/// <param></param>
public void CheckExistUserName(HttpContext context)
{
string username = context.Request["username"];
if (Tools.IsValidInput(ref username, true))
{
context.Response.Write(new memberBLL().CheckExistUserName(username));
}
}
/// <summary>
/// 保存用户信息
/// </summary>
/// <param></param>
public void SaveMemberInfo(HttpContext context)
{
try
{
//表单读取
string txtUserName = context.Request["txtUserName"];
string txtPwd = context.Request["txtPwd"];
string txtEmail = context.Request["txtEmail"];
string txtCheckCode = context.Request["txtCheckCode"];
//验证码校验
if (!txtCheckCode.Equals(context.Session["checkcode"].ToString()))
{
return;
}
//字符串sql注入检测
if (Tools.IsValidInput(ref txtUserName, true) && Tools.IsValidInput(ref txtPwd, true) && Tools.IsValidInput(ref txtEmail, true))
{
member info = new member();
info.username = txtUserName;
info.password = txtPwd;
info.Email = txtEmail;
info.states = "0";
if (new memberBLL().AddNew(info) > 0)
{
SMTP smtp = new SMTP(info.Email);
string webpath = context.Request.Url.Scheme + "://" + context.Request.Url.Authority + "/Default.aspx";
smtp.Activation(webpath, info.username);//发送激活邮件
JScript.AlertAndRedirect("注册用户成功!!", "../Default.aspx");
}
else {
JScript.AlertAndRedirect("注册用户失败!", "../Default.aspx");
}
}
}
catch (Exception ex)
{
logger.Error("错误!", ex);
}
}
public bool IsReusable {
get {
return false;
}
}
}
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