Spring Boot 處理異常返回json

spring boot 老版本處理異常  對於瀏覽器客戶端,返回error數據

對於非瀏覽器返回json數據, 主要取決於你的請求head 是什么 

但是當我們自定義了:  老版本無論請求什么都會返回json異常數據,

@ControllerAdvice
public class UserExceptionHandler {

    @ResponseBody
    @ExceptionHandler(UserNotFoundExits.class)
    public Map<String, Object> handleException(Exception e){
        Map<String,Object> map = new HashMap<>();
        map.put("code","user.notexist");
        map.put("message",e.getMessage());
        return map;
    }
}

 通過閱讀源碼, 新版本的異常處理 就是我們上面強制定義了 異常處理類 ,也會按照 瀏覽器返回error ,客戶端返回json 

    @RequestMapping(
        produces = {"text/html"}
    )
    public ModelAndView errorHtml(HttpServletRequest request, HttpServletResponse response) {
        HttpStatus status = this.getStatus(request);
        Map<String, Object> model = Collections.unmodifiableMap(this.getErrorAttributes(request, this.isIncludeStackTrace(request, MediaType.TEXT_HTML)));
        response.setStatus(status.value());
        ModelAndView modelAndView = this.resolveErrorView(request, response, status, model);
        return modelAndView != null ? modelAndView : new ModelAndView("error", model);
    }

    @RequestMapping
    public ResponseEntity<Map<String, Object>> error(HttpServletRequest request) {
        HttpStatus status = this.getStatus(request); // 此處做了更改
        if (status == HttpStatus.NO_CONTENT) {
            return new ResponseEntity(status);
        } else {
            Map<String, Object> body = this.getErrorAttributes(request, this.isIncludeStackTrace(request, MediaType.ALL));
            return new ResponseEntity(body, status);
        }
    }