前台后台$.psot交互

前台

{include file='public/header' /}
<body class="login-bg">  
    <div class="login layui-anim layui-anim-up">
        <div class="message">x-admin2.0-管理登录</div>
        <div id="darkbannerwrap"></div>      
        <form>
          <input name="username" type="text" placeholder="用户名">
          <hr class="hr15">
          <input name="password" type="password" placeholder="密码">
          <p id="infoerror" style="color:red;"></p>
          <hr class="hr15">
        </form>
        <button  id="loginbutton" class="layui-btn  layui-btn-lg layui-btn-fluid"  onclick="dologin()"><h3>登入</h3></button>
    </div>

<script>
    function dologin() {

        var username = $("input[name='username']").val();
        var password = $("input[name='password']").val();
        if (username == '') {
            $("#infoerror").text('请填写用户名');

            return;
        }
        if (password == '') {
            $("#infoerror").text('请填写密码');

            return;
        }
        var data = {
            'username': username,
            'password': password
        };
        $.post("{:url('check')}", data, function (res) {
            if (res.code == 0) {
                layer.msg(res.msg);
                setTimeout("location.href='{:url('home/index')}'", 500);

            } else if (res.code == 1) {
                $("#infoerror").text(res.msg);
                return;
            }
              else if (res.code == 2) {
                 $("#infoerror").html(res.msg);
                return;
            }
        }, 'json');
    }
</script>
</body>
</html>

 

后台

<?php
namespace app\admin\controller;
use app\admin\common\Base;
use think\Controller;
use think\Request;
use think\Db;
use think\Session;
class Login extends Base
{
    //首页
    public function index()
    {
        return $this->view->fetch('login');
    }
   /* 验证用户身份*/
    public function check()
    {
        if($this->alreadyLogin()){
            exit(json_encode(array('code'=>2,'msg'=>'用户'.Session::get('admin')['username'].'已登录,<a href='.url('home/index').'>点我跳转到管理界面</a>')));
        }
        $username = trim(input('post.username'));
        $password = trim(input('post.password'));
        if(!$username){
            exit(json_encode(array('code'=>1,'msg'=>'请填写用户名')));
        }
        if(!$password){
            exit(json_encode(array('code'=>1,'msg'=>'请填写密码')));
        }
        //从数据库查询到数组
        $data = Db::table('admin')->where('username',$username)->find();

        //如果查到为空
        if(!$data){
            exit(json_encode(array('code'=>1,'msg'=>'用户名不存在')));
        }

        //如果密码匹配
        if($data['password'] != md5($username.$password)){
            exit(json_encode(array('code'=>1,'msg'=>'密码错误')));
        }
        //验证通过
        //设置session
        Session::set('admin',$data);
        exit(json_encode(array('code'=>0,'msg'=>'登录成功')));
    }

    /*退出登录*/
    public function logout()
    {
        //删除session
        Session::delete('admin');

        //执行成功，并返回登录界面
        $this->success('注销成功，正在返回···','admin/login/index');
    }
}

 

posted @ 2018-06-01 13:56  cl94  阅读(240)  评论(0)  编辑  收藏  举报