因?yàn)閷W(xué)習(xí)過(guò)了5.1之后，基本的東西就不再做介紹了

自定義錯(cuò)誤返回機(jī)制一

php artisan make:request bannerCheckUpload;

<?php

namespace App\Http\Requests;
use Illuminate\Foundation\Http\FormRequest;

class bannerCheckUpload extends FormRequest
{
    public function authorize()
    {
        return true;
    }

    public function rules()
    {
        return [
            'alt' => 'bail|required|max:45'
        ];
    }

    public function messages()
    {
        return [
            'alt.required' => '圖片的提示不能為空'
        ];
    }
}

<?php

namespace App\Http\Controllers;

use App\Http\Requests\bannerCheckUpload;
use Illuminate\Http\Request;
use App\Http\Controllers\Controller;
use Illuminate\Contracts\Validation\Validator;

class BannerController extends Controller
{
    public function uploading(bannerCheckUpload $request)
    {
        
    }
}

自定義錯(cuò)誤返回機(jī)制二

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class BannerController extends Controller
{
    public function uploading(Request $request)
    {
        $message = [
            'alt.required'=>'賬號(hào)不能為空！',
            'link.required'=>'密碼不能為空！',
        ];
        $this->validate($request, [
            'alt' => 'required|max:10',
            'link' => 'required',
        ],$message);
    }
}