Laravel登录失败次数限制的实现方法

在用户身份验证的情况下，Laravel 具有内置的身份验证系统。我们可以根据要求轻松修改它。身份验证中包含的功能之一是Throttling.

为什么我们需要throttling保护？

基本上，throttling是用来保护暴力攻击的。它将在一定时间内检查登录尝试。在短登录中，throttling会计算用户或机器人尝试失败的登录尝试次数。

使用自定义登录实现限制

默认情况下，在内置身份验证控制器中实现限制。但是，如果我们需要实现它到自定义登录呢？

实现自定义登录限制非常容易。首先，我们必须将ThrottlesLogins trait包含到您的控制器中。

use Illuminate\Foundation\Auth\ThrottlesLogins;

现在，将此ThrottlesLogins trait 加到控制器中。

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namespace App\Http\Controllers; use Illuminate\Http\Request; use Illuminate\Foundation\Auth\ThrottlesLogins; class AuthController extends Controller {   use ThrottlesLogins;   ......

现在转到用于对用户进行身份验证的方法。在我的例子中，我使用了 login() POST 方法。并粘贴以下代码:

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public function login(Request $request ) {   // Authenticate Inputs   $request ->validate([   'username' => 'required' ,   'password' => 'required|min:6|max:18'   ]);   // If the class is using the ThrottlesLogins trait, we can automatically throttle   // the login attempts for this application. We'll key this by the username and   // the IP address of the client making these requests into this application.   if (method_exists( $this , 'hasTooManyLoginAttempts' ) &&   $this ->hasTooManyLoginAttempts( $request )) {   $this ->fireLockoutEvent( $request );   return $this ->sendLockoutResponse( $request );   }     .......

首先，我们验证了用户提交的输入，然后实现了hasTooManyLoginAttempts() 方法。此方法将检查用户在某个时间是否执行过一定数量的失败尝试，然后系统将通过sendLockoutResponse()  方法阻止该用户。

现在，我们必须通过incrementLoginAttempts()方法指示对ThrottlesLogins trait的失败登录尝试。

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if ( Auth::attempt([ 'username' => $username , 'password' => $password ]) ){   // Redirect to appropriate dashboard } else {   // If the login attempt was unsuccessful we will increment the number of attempts   // to login and redirect the user back to the login form. Of course, when this   // user surpasses their maximum number of attempts they will get locked out.   $this ->incrementLoginAttempts( $request );   return redirect()->back()    ->withInput( $request ->all())    ->withErrors([ 'error' => 'Please check your username / password.' ]); }

您还可以通过$maxAttempts和$decayMinutes属性更改允许的最大尝试次数和限制的分钟数。在这里，您可以找到完整的代码。

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<?php namespace App\Http\Controllers; use Illuminate\Http\Request; use Illuminate\Foundation\Auth\ThrottlesLogins; class AuthController extends Controller {   use ThrottlesLogins;   /**    * The maximum number of attempts to allow.    *    * @return int    */   protected $maxAttempts = 5;   /**    * The number of minutes to throttle for.    *    * @return int    */   protected $decayMinutes = 1;   public function login(Request $request )   {    // Authenticate Inputs    $request ->validate([     'username' => 'required' ,     'password' => 'required|min:6|max:18'    ]);    // If the class is using the ThrottlesLogins trait, we can automatically throttle    // the login attempts for this application. We'll key this by the username and    // the IP address of the client making these requests into this application.    if (method_exists( $this , 'hasTooManyLoginAttempts' ) &&     $this ->hasTooManyLoginAttempts( $request )) {     $this ->fireLockoutEvent( $request );     return $this ->sendLockoutResponse( $request );    }    $username = $request ->username;    $password = $request ->password;       if ( Auth::attempt([ 'username' => $username , 'password' => $password ]) ){     // Redirect to appropriate dashboard    }    else {     // If the login attempt was unsuccessful we will increment the number of attempts     // to login and redirect the user back to the login form. Of course, when this     // user surpasses their maximum number of attempts they will get locked out.     $this ->incrementLoginAttempts( $request );     return redirect()->back()      ->withInput( $request ->all())      ->withErrors([ 'error' => 'Please check your username / password.' ]);    }   } } Related Posts:

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原文链接：https://blog.p2hp.com/archives/7388