使用注解@RestControllerAdvice

新建自定义类：

/**
 * desc
 *
 * @author cjq
 * @date 2022/10/11
 */
@RestControllerAdvice(value={"com.xxx.sjcj"},annotations = {ResultWrapper.class})
public class CustomResponseBodyAdvice implements ResponseBodyAdvice<Object> {

    @Override
    public boolean supports(MethodParameter returnType, Class converterType) {
        return true;
    }

    @Override
    public Object beforeBodyWrite(Object body, MethodParameter returnType, MediaType selectedContentType, Class selectedConverterType, ServerHttpRequest request, ServerHttpResponse response) {
        SjcjResponse res = new SjcjResponse();
        JSONObject bodyObj = JSONObject.parseObject(JSON.toJSONString(body));
        int code = bodyObj.getInteger("code");
        if(HttpStatus.SUCCESS!=code){
            res.setCode(RespEnum.UNKNOW_ERROR.getCod());
            res.setDes(bodyObj.getString("msg"));
        }
        return res.toString();
    }
}

在需要重构返回体的方法上加注解ResultWrapper

ResultWrapper类：

@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface ResultWrapper {
}

使用在方法中：

    @PostMapping
    @ResultWrapper
    public AjaxResult addBatch(@RequestBody List<SjcjSyfwEntity> list){
    //... 省略
    }