springboot 统一json返回格式，并设置http响应码

springboot 统一json返回格式 https://www.cnblogs.com/xiaqiuchu/p/14406255.html

springboot 统一返回格式并配置响应码

@RequestMapping("/")
    public ResponseEntity<?> index() {
        return new ResponseEntity<Object>(new JsonResult<Object>(articleService.selectPagination()), HttpStatus.OK);
    }