java api 返回统一格式的的json字符串

Question

我想通过control类返回给前端json字符串，但是现在是每个接口返回的格式都不相同。
我想写一个Response类，返回

｛
    status：true，
    message： "操作失败，取错误信息"，
    body：”操作成功，取数据“
 ｝

但是不懂这样的Response类怎么写。body里面可能放字符串，可能放各种model类。

Answer 1

Use template classes

public class Response<T> {
    private boolean status;
    private String message;
    private T body;
    
    ...
}

When to use:

Response response = new Response<String>();

But personally I don’t like this approach very much. It is recommended that when it succeeds, the response returns the entity you want to return; when it fails, it returns an error entity. As for the return value, just use http status directly. This is closer to RESTful

Answer 2

Put a base class and put the common attributes into this base class, and then other responses can inherit this class

Answer 3

Actually, I think this requirement should be met with HttpServletResponseWrapperthis thing. I don’t know if you can understand it now