Laravel - 方法 Illuminate\Auth\RequestGuard::attempt 在测试 api 时不存在

Laravel - Method Illuminate\Auth\RequestGuard::attempt does not exist when testing the api

我使用 Laravel-Passport 为我的 Laravel 5.8 身份验证 api 端点

<?php
namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use App\User;
use Validator;

    public function login(Request $request)
{
    $validator = Validator::make($request->all('email', 'password'), [
        'email' => 'required|string|email|max:255',
        'password' => 'required|string|min:6'
    ]);

    if ($validator->fails()) {
        return response()->json(['error'=>$validator->errors()], 401);
    };

    if(Auth::attempt(['email' => request('email'), 'password' => request('password')])){
        $user = Auth::user();
        $success['token'] = $user->createToken('MyApp')-> accessToken;
        return response()->json(['success' => $success], 200);
    }
    else{
        return response()->json(['error'=>'Can not log in with the data provide.'], 401);
    }        
} 

auth.php

    'guards' => [
    'web' => [
        'driver' => 'session',
        'provider' => 'users',
    ],

    'api' => [
        'driver' => 'passport',
        'provider' => 'users',
    ],
],

当我在 POSTMAN 上测试端点时,出现此错误:

错误的原因是什么,我该如何解决?

BadMethodCallException Method Illuminate\Auth\RequestGuard::attempt does not exist.

要使用用户名和密码登录用户,您需要像这样使用 web 身份验证保护程序:

if(Auth::guard('web')->attempt(['email' => request('email'), 'password' => request('password')])){
        $user = Auth::guard('web')->user();

我在测试最近添加的路由时遇到了同样的问题。清除缓存路由为我解决了这个问题:

php artisan route:clear