/// <summary>
/// 设置上传回调地址
/// </summary>
/// <param name="callbackUrl">上传成功后回调客户端的URL地址</param>
/// <returns></returns>
public SetCallbackParam setCallback(string callbackUrl)
{
SetCallbackModule setCallbackModule = new SetCallbackModule(callbackUrl);
UploadUtil util = new UploadUtil(setCallbackModule);
return(util.setCallback());
}