chengluApp/app/Exceptions/Handler.php

<?php

namespace App\Exceptions;

use Illuminate\Http\Request;
use Illuminate\Foundation\Exceptions\Handler as ExceptionHandler;
use Illuminate\Validation\ValidationException;
use Throwable;

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 = [
        'current_password',
        'password',
        'password_confirmation',
    ];

    /**
     * Register the exception handling callbacks for the application.
     *
     * @return void
     */
    public function register()
    {
        $this->reportable(function (Throwable $e) {
            //
        });
    }


    public function render($request, Throwable $exception)
    {
        if ($exception instanceof ValidationException) {
            return response()->json([
                'code' => 422,
                'msg' => '调用参数错误',
                'data' => $exception->errors()->first(),
            ], 422);
        }
        return parent::render($request, $exception);
    }

}