'require|max:25', 'bar_code' => 'require|max:16', ]; protected $message = [ 'username.require' => '用户名必须存在', 'username.max' => '用户名长度必须小于25', 'password.require' => '用户密码长度必须小于25', 'password.max' => '用户密码长度必须小于25', ]; }