mini_xzey/app/Http/Requests/Auth/LoginRequest.php

<?php

namespace App\Http\Requests\Auth;

use Illuminate\Contracts\Validation\ValidationRule;
use Illuminate\Foundation\Http\FormRequest;

class LoginRequest extends FormRequest
{

    /**
     * Determine if the user is authorized to make this request.
     */
    public function authorize(): bool
    {
        return true;
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array<string, ValidationRule|array|string>
     */
    public function rules(): array
    {
        return [
//            'username' => 'required',
//            'password' => 'required',
            'code' => 'required'
        ];
    }

    /**
     * @return array
     */
    public function messages(): array
    {
        return [
            'username.required' => '入参错误',
            'password.required' => '入参错误',
            'code.required' => '入参错误'
        ];
    }
}