关于springboot的接口返回值统一标准格式

@GetMapping(value="/getStr")
public String  getStr(  ){
    return  "test";
}

@GetMapping(value="/getObject")
public UserVO  getObject(  ){
    UserVO vo=new UserVO();
    vo.setUsername("agan");
    return  vo;
}

{
  "id": null,
  "username": "agan",
  "passWord": null,
  "email": null,
  "phone": null,
  "idCard": null,
  "sex": null,
  "deleted": null,
  "updateTime": null,
  "createTime": null
}

@GetMapping(value="/empty")
public void  empty(  ){
}

@GetMapping(value="/error")
public void  error(  ){
    int i=9/0;
}

{
  "timestamp": "2019-09-07T10:35:56.658+0000",
  "status": 500,
  "error": "Internal Server Error",
  "message": "/ by zero",
  "path": "/user/error"
} 

{
   "status":0,
   "desc":"成功",
   "data":"test"
}

{
   "status":0,
   "desc":"成功",
   "data":"test"
}

@AllArgsConstructor
@NoArgsConstructor
@Data
public class Result<T> {
    
    private Integer status;
    
    private String desc;
    
    private T data;
    
    public static Result suc() {
        Result result = new Result();
        result.setResultCode(ResultCode.SUCCESS);
        return result;
    }
    
    public static Result suc(Object data) {
        Result result = new Result();
        result.setResultCode(ResultCode.SUCCESS);
        result.setData(data);
        return result;
    }
    
    public static Result fail(Integer status, String desc) {
        Result result = new Result();
        result.setStatus(status);
        result.setDesc(desc);
        return result;
    }
    
    public static Result fail(ResultCode resultCode) {
        Result result = new Result();
        result.setResultCode(resultCode);
        return result;
    }
    
    private void setResultCode(ResultCode code) {
        this.status = code.code();
        this.desc = code.message();
    }
}

public enum ResultCode  {
    
    SUCCESS(0, "成功"),
    
    SYSTEM_ERROR(10000, "系统异常，请稍后重试"),
    UNAUTHORIZED(10401, "签名验证失败"),
    
    PARAM_IS_INVALID(10001, "参数无效"),
    
    USER_HAS_EXISTED(20001, "用户名已存在"),
    USER_NOT_FIND(20002, "用户名不存在");
    private Integer code;
    private String message;
    ResultCode(Integer code, String message) {
        this.code = code;
        this.message = message;
    }
    public Integer code() {
        return this.code;
    }
    public String message() {
        return this.message;
    }
}

@api(description = "用户接口")
@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {
    @GetMapping(value="/getResult")
    public Result getResult(  ){
        return Result.suc("test");
    }
}

public interface ResponseBodyAdvice<T> {
    
    boolean supports(MethodParameter var1, Class<? extends HttpMessageConverter<?>> var2);
    
    @Nullable
    T beforeBodyWrite(@Nullable T var1, MethodParameter var2, MediaType var3, Class<? extends HttpMessageConverter<?>> var4, ServerHttpRequest var5, ServerHttpResponse var6);
}

@ControllerAdvice(basePackages = "com.agan.boot")
public class ResponseHandler implements ResponseBodyAdvice<Object> {
    
    @Override
    public boolean supports(MethodParameter methodParameter, Class<? extends HttpMessageConverter<?>> aClass) {
        return true;
    }
    
    @Override
    public Object beforeBodyWrite(Object o, MethodParameter methodParameter, MediaType mediaType, Class<? extends HttpMessageConverter<?>> aClass, ServerHttpRequest serverHttpRequest, ServerHttpResponse serverHttpResponse) {
        if (o instanceof String) {
            return JSONUtil.object2json(Result.suc(o));
        }
        return Result.suc(o);
    }
}

@ControllerAdvice(basePackages = “com.agan.boot”)

if (o instanceof String) {
            return JsonUtil.object2Json(ResResult.suc(o));
}