自定义返回模型

public class ReturnModelBase
{
    public bool State { get; set; }
    public string Message { get; set; }
}
public class ReturnModel : ReturnModelBase
{
    public object Data { get; set; }
}
public class ReturnModel<T> : ReturnModelBase
{
    public T Data { get; set; }
}
public class ReturnModelList<T> : ReturnModelBase
{
    public List<T> Data { get; set; }
}