Laravel 5.5实现前后台登陆

利用laravel5.5实现了一个功能，本文主要给大家介绍了关于Laravel 5.5基于内置的Auth模块如何实现前后台登陆的相关资料，文中通过示例代码介绍的非常详细，希望能帮助到大家。

方法如下：

步骤1：生成Auth

在项目建立完成后，生成内置Auth组件：

php artisan make:auth

步骤2：添加guard

打开config\auth.php,为方便前后台用户切换，项目共用Users表

'guards' => [
 //...
 'admin' => [
  'driver' => 'session',
  'provider' => 'users',
 ],
 //...
 ],

步骤3：实现基类

class AdminController extends BaseController
{
 use AuthorizesRequests, DispatchesJobs, ValidatesRequests;

 public function __construct()
 {
 $this->middleware('auth:admin');
 }
}

步骤4：实现后台登陆控制器

新建appcontrollersAdminLoginController.php

<?php
namespace App\Http\Controllers\Admin;
use App\Http\Controllers\Controller;
use Illuminate\Support\Facades\Auth;
use Illuminate\Foundation\Auth\AuthenticatesUsers;
use Illuminate\Http\Request;
class LoginController extends Controller
{
 /*
 |--------------------------------------------------------------------------
 | Login Controller
 |--------------------------------------------------------------------------
 |
 | This controller handles authenticating users for the application and
 | redirecting them to your home screen. The controller uses a trait
 | to conveniently provide its functionality to your applications.
 |
 */
 use AuthenticatesUsers;
 /**
 * Where to redirect users after login.
 *
 * @var string
 */
 protected $redirectTo = '/admin';
 /**
 * Create a new controller instance.
 *
 * @return void
 */
 public function __construct()
 {
 $this->middleware('guest:admin')->except('logout');
 }
 /**
 * 重写登陆页面
 * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
 */
 public function showLoginForm()
 {
 return view('backend.login');
 }
 /**
 * 重写退出方法
 * @param Request $request
 * @return \Illuminate\Http\RedirectResponse|\Illuminate\Routing\Redirector
 */
 public function logout(Request $request)
 {
 $this->guard()->logout();
 $request->session()->flush();
 $request->session()->regenerate();
 return redirect('/admin/login');
 }
 /**
 * 重写guard认证
 * @return mixed
 */
 protected function guard()
 {
 return Auth::guard('admin');
 }
}

步骤5：实现登陆后跳转到不同路径

app\Middleware\RedirectIfAuthenticated.php

public function handle($request, Closure $next, $guard = null)
{
 if (Auth::guard($guard)->check()) {
  $path = $guard ? '/admin' : '/home';
  return redirect($path);
 }
 return $next($request);
}

步骤6：实现未通过认证跳转不同登陆页

app\Exceptions\Handler.php

/**
 * 重写实现未认证用户跳转至相应登陆页
 * @param \Illuminate\Http\Request $request
 * @param AuthenticationException $exception
 * @return \Illuminate\Http\JsonResponse|\Illuminate\Http\RedirectResponse
 */
 protected function unauthenticated($request, AuthenticationException $exception)
 {
 if($request->expectsJson()){
  return response()->json(['message' => $exception->getMessage()], 401);
 }else{
  return in_array('admin', $exception->guards()) ? return redirect()->guest('/admin/login') : redirect()->guest('login');
 }
 }

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