Laravel 5.5 FormRequest 自定义错误消息

　　使用FormRequest进行表单验证，就不用让验证逻辑和控制器里面的逻辑都混在一起。但在使用的时候呢，发现json错误返回的数据，与我们想要的有点差距。下面我给个例子：（不喜勿喷）
　　

　　在用ajax进行提交时，如果验证错了，那么他会返回
　　
　　
　　如果是权限错了，他会返回
　　

　　但我想要的是
　　

　　那怎么办呢，其实很简单
　　我们只需要在　App\Exceptions\Handler 里面重写两个函数就可以了
　　
　　添加上这两个函数，然后里面怎么定义，就看你了
　　记得加上
　　

       use Illuminate\Validation\ValidationException;

       use Illuminate\Auth\Access\AuthorizationException;

最后附上这两个文件的代码
LoginPost

<?php

namespace App\Http\Requests;

use Illuminate\Foundation\Http\FormRequest;

use Illuminate\Auth\AuthenticationException;

class LoginPost extends FormRequest

{

    /**

     * Determine if the user is authorized to make this request.

     *

     * @return bool

     */

    public function authorize(){

        if($this->input('account')=='aaa@abc.com'){

            return false;

        }

        return true;

    }

    protected function failedAuthorization()

    {

        throw new AuthenticationException('该帐号已被拉黑');

    }

    /**

     * Get the validation rules that apply to the request.

     *

     * @return array

     */

    public function rules(){

        return [

            'account'=>[

                'required',

                'regex:/^1[34578][0-9]\d{4,8}|(\w)+(\.\w+)*@(\w)+((\.\w+)+)|[0-9a-zA-Z_]+$/',//验证为手机号，邮箱，或帐号

            ],

            'password'=>'required|between:6,18',//验证密码

        ];

    }

    public function messages(){

        return [

            'account.required' => '帐号不能为空',

            'account.regex' => '帐号不合法',

            'password.required'  => '密码不能为空',

            'password.between'  => '密码错误',

        ];

    }

Handler

<?php

namespace App\Exceptions;

use Exception;

use Illuminate\Foundation\Exceptions\Handler as ExceptionHandler;

use Illuminate\Validation\ValidationException;

use Illuminate\Auth\AuthenticationException;

class Handler extends ExceptionHandler

{

    /**

     * A list of the exception types that are not reported.

     *

     * @var array

     */

    protected $dontReport = [

        //

    ];

    /**

     * A list of the inputs that are never flashed for validation exceptions.

     *

     * @var array

     */

    protected $dontFlash = [

        'password',

        'password_confirmation',

    ];

    /**

     * Report or log an exception.

     *

     * This is a great spot to send exceptions to Sentry, Bugsnag, etc.

     *

     * @param  \Exception  $exception

     * @return void

     */

    public function report(Exception $exception)

    {

        parent::report($exception);

    }

    /**

     * Render an exception into an HTTP response.

     *

     * @param  \Illuminate\Http\Request  $request

     * @param  \Exception  $exception

     * @return \Illuminate\Http\Response

     */

    public function render($request, Exception $exception)

    {

        return parent::render($request, $exception);

    }

    protected function unauthenticated($request, AuthenticationException $exception)

    {

        if($request->expectsJson()){

            $response=response()->json([

                    'status'=>3,

                    'msg' => $exception->getMessage(),

                    'errors'=>[],

                ], 200);

        }else{

            $response=redirect()->guest(route('login'));

        }

        return $response;

    }

    protected function invalidJson($request, ValidationException $exception)

    {

        return response()->json([

            'status'=>2,

            'msg' => $exception->getMessage(),

            'errors' => $exception->errors(),

        ], $exception->status);

    }

}

--------------------- 本文来自 断水流灬 的CSDN 博客 ，全文地址请点击：https://blog.csdn.net/duanshuiliu2017/article/details/78343408?utm_source=copy