[自定义返回结果
用于返回结果, 包含输出, 状态码, 消息, 错误消息, 数据。]<[The{@code Void} class is an uninstantiable placeholder class to hold a reference to the{@code Class} object representing the Java keyword void.]> 邮件验证结果
{
"output": "string",
"code": 0,
"message": "string",
"error_message": "string",
"data": true
}