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。

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:

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。

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。

<?phpnamespace 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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