swoft2.0.6声明验证器，验证类型一直通不过

| Q | A
| ------------------- | -----
| Bug report? | yes
| Feature request? | yes
| Swoft version | 2.0.6
| Swoole version | 4.4.7
| PHP version | 7.2.22
| Runtime environment | Docker etc.

Describe the bug

参数id为int类型，采用声明验证器，()一直提示声明message,换成()也是一样，字段参数都是不为null

参数：$uid,$touid,$p 都不为null，接口有传递参数

图4方式，提示错误： [ERROR] App\Exception\Handler\HttpExceptionHandler:handle(44) Argument 1 passed to Swoft\Validator\Helper\ValidatorHelper::validatelength() must be of the type string, integer given, called in /var/www/swoft/vendor/swoft/validator/src/Rule/LengthRule.php on line 38

Screenshots