ajax提交登陆数据并检验

注意：formdata不兼容IE10以下，如果要兼容性使用jquery.form.js！

1.前台ajax数据提交

 1 <form id="login_form" action="" method="POST">
 2     <div class="login_frame" style="position:relative";>
 3         <div class="login_gl" style="margin-top:35px;">
 4             <span class="login_wz" >后台管理系统</span>
 5         </div>
 6 
 7         <div class="login_user">
 8             <input id="username" name="username" type="text" placeholder="请输入您的用户名" value=""  style="width:100%;height:32px;border-style:none;font-size:16px;color:#959595;"/>
 9         </div>
10 
11         <div class="login_user">
12             <input id="password" name="password" type="password" placeholder="请输入您的密码" value=""  style="width:100%;height:32px;border-style:none;font-size:16px;color:#959595;"/>
13         </div>
14 
15         <div id="login_btn" class="login_log">
16             <span style="font-size:16px;">登录</span>
17         </div>
18     </div>
19    </form>
20 </div>
21 <script type="text/javascript">
22     $("#login_btn").click(function(){
23        var username = $.trim($("#username").val());
24        var password = $.trim($("#password").val());
25         if(username == ""){
26             alert("请输入用户名");
27             return false;
28         }else if(password == ""){
29             alert("请输入密码");
30             return false;
31         }
32         //ajax去服务器端校验
33         var data= {username:username,password:password};
34         
35         $.ajax({
36             type:"POST",
37             url:"__CONTROLLER__/check_login",
38             data:data,
39             dataType:'json',
40             success:function(msg){
41                 //alert(msg);
42                 if(msg==1){
43                       window.location.href = "{:U('Index/personal')}";   
44                 }else{
45                     alert("登录失败，请重试!");
46                 }
47             }
48         });
49 });    
50 </script>

 

2.后台校验

 1 * */
 2     public function check_login(){
 3         $password=I('param.password');
 4         $username=I('param.username');
 5         $data["name"]=$username;
 6         $user=M('systemuser');
 7         $list=$user->where($data)->find();
 8         $return=0;
 9         if($list!=""){
10             if($list['password']==md5($password) && $list['status'] == 1){
11                 //登录时间和登录IP
12                 $public = new PublicController();
13                 $lastlogonip=$public->ip_address();
14                             
15                 $time=$time=date("Y-m-d H:i:s", time());
16                 $where=array('id'=>$list['id']);
17                 
18                 $user->where($where)->save(array('lastlogonip'=>$lastlogonip,'lastlogontime'=>$time));
19                 $this->login($list);
20                 $return=1;//登录成功
21             }
22         }else{
23             $return=2;//登录失败
24         }
25         $this->ajaxReturn($return);
26     }

 

 

3.退出登录：

退出登录：<a href="{:U('Login/Login')}"> <img src="/Public/images/tuichu.png"> </a>