<?phpnamespace App/Http/Controllers;use Illuminate/Support/Facades/Auth;class LoginController extends Controller{ /**  * Handle an authentication attempt.  *  * @return Response  */ public function authenticate() {  if (Auth::attempt(['email' => $email, 'password' => $password])) {   // Authentication passed...   return redirect()->intended('dashboard');  } }}

/**  * Handle a login request to the application.  *  * @param /Illuminate/Http/Request $request  * @return /Illuminate/Http/RedirectResponse|/Illuminate/Http/Response  */ public function login(Request $request) {  // 表單驗(yàn)證  $this->validateLogin($request);  // 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.  // 防止暴力破解，多次登錄失敗會(huì)根據(jù)IP鎖定  if ($this->hasTooManyLoginAttempts($request)) {   $this->fireLockoutEvent($request);   return $this->sendLockoutResponse($request);  }    // 這個(gè)就是主要的負(fù)責(zé)判斷數(shù)據(jù)庫中是否存在相應(yīng)的賬號和密碼的地方，我們需要重寫的就是attemptLogin方法  if ($this->attemptLogin($request)) {   return $this->sendLoginResponse($request);  }  // 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.  // 登錄失敗，失敗次數(shù)++，防止暴力破解  $this->incrementLoginAttempts($request);  // 返回失敗響應(yīng)  return $this->sendFailedLoginResponse($request); }

/**  * Attempt to log the user into the application.  *  * @param /Illuminate/Http/Request $request  * @return bool  */ protected function attemptLogin(Request $request) {  return $this->guard()->attempt(   $this->credentials($request), $request->has('remember')  ); }

public function attemptLogin(Request $request) {  $username = $request->input('username');  $password = $request->input('password');  // 驗(yàn)證用戶名登錄方式  $usernameLogin = $this->guard()->attempt(   ['username' => $username, 'password' => $password], $request->has('remember')  );  if ($usernameLogin) {   return true;  }  // 驗(yàn)證手機(jī)號登錄方式  $mobileLogin = $this->guard()->attempt(   ['mobile' => $username, 'password' => $password], $request->has('remember')  );  if ($mobileLogin) {   return true;  }  // 驗(yàn)證郵箱登錄方式  $emailLogin = $this->guard()->attempt(   ['email' => $username, 'password' => $password], $request->has('remember')  );  if ($emailLogin) {   return true;  }  return false; }