TP6实现登录后台管理（一）

namspace app\admin\controller;
 
class Login exetends BaseController
{
 
public function index()
 
{
//安装视图才可以，
//这个是跳转到view下的index.html
//安装视图后创建view目录放入对应的html文件
return View::fetch()  
}
 
//登陆时检测密码是否正确
public function  check(){
 
//判断请求方式是不是POst
if($this->request()->is_Post()){
 
}
 
//show方法在app\common下自行定义才可以使用
//config代表config目录下
//status代表status文件自行创建定义状态码
return show(config("status.error"),"请求方式不对")
 
 
}
 
//判断提交的表单与数据库是否比对
$usernam = $this->request->param("username","","trim");
$password= $this->request->param("password","","trim");
//验证码自行去官网安装
//安装后需要在app\middleware中开启session才可以使用
$captcha= $this->request->param("captcha","","trim");
 
//判断username password captcha 是否为空
if(empty($username) || empty($password) || empty($captcha)){
 return show(config("status.error"),"参数不能为空");
 
}
 
//创建通用验证码9997
if($captcha == 9997){
    return show(config("status.success"),"登录成功");
}
 
//校验验证码是否等于session中的验证码
if(!captcha_check($captcha))
{
 
show(config("status.error"),"验证码校验失败");
}
  //获取user表数据
        $adminUserObj = new AdminUser();
        $adminUser = $adminUserObj -> getAdminUserByUsername($username);
 
        //判断用户表数据是否为空，以及数据库表的状态
        if(empty($adminUser) || $adminUser->status != config("status.mysql.table_normal")){
            return show(config("status.error"),"该用户不存在");
        }
 
        $adminUser = $adminUser -> toArray();
 
        //判断密码是否正确
        if ($adminUser['password'] != md5($password."_xiaobai_abc"))
        {
            return show(config("status.error"),"密码错误");
 
        }
 
 
        $updateData = [
          "last_login_time"    =>      time(),
          "last_login_ip"       =>      request()->ip(),
          "update_time"         =>      time(),
 
        ];
 
        $res = $adminUserObj->updateById($adminUser['id'],$updateData);
        if (empty($res)){
            return show(config("status.error"),"登录失败");
        }
 
        }catch (\Exception $e){
            //todo 记录日志 $e->getMessage();
            return show(config("status.success"),"内部异常登录失败");
        }
        //记录到session
        session(config("admin.session_admin"),$adminUser);
 
        return  show(config("status.success"),"登录成功");
}
 
   
    }

<?php
namspace app/common/model/mysql;
use think/model
class AdminUser exetends Model
{
    
//判断用户是否存在
public function getAdminUserByusernam($usernam){
    if(empty($username)){
 
    return false;
}
$result = [
"username"    => trim($username),
 
];
 
return $this->where($result)->find()
 
 
}
 
//根据模型更新数据库中登录操作
publice function updateById($id,$data)
{
//将id转换
$id = intval($id),
//判断id,data以及data是不是数组
if(empty($id) || empty($data) || !is_Post($data))
{
return false;
}
$where = [
"id"    => $id,
];
 
$this->where($id)->save($data);
}
 
 
}

composer require topthink/think-captcha

class Verify {
    public  function  index()
    {
    return Captcha::create("verify");  //verify 是引入的自定义验证码，参数名自行配置
    }
}

<?php
namespace app\admin\controller;
 
use app\BaseController;
use think\facade\View;
 
class Index extends BaseController
{
   public function index(){
       return View::fetch();
   }
 
}