SpringBoot定制错误的Json数据

 1 @ControllerAdvice
 2 public class MyExceptionHandler {
 3     @ResponseBody
 4     @ExceptionHandler(UserNotExistException.class)
 5     public Map<String,Object> handleException(Exception e){
 6         Map<String,Object> map = new HashMap<>();
 7         map.put("code",404);
 8         map.put("message",e.getMessage());
 9         return map;
10     }
11 }

 1 @ControllerAdvice
 2 public class MyExceptionHandler {
 3     @ExceptionHandler(UserNotExistException.class)
 4     public String handleException(Exception e, HttpServletRequest request){
 5         //Integer statusCode = (Integer) request.getAttribute("javax.servlet.error.status_code");
 6         //传入我们自己的错误状态码，4xx,5xx，否则不会进入定制错误页面的解析流程
 7         request.setAttribute("javax.servlet.error.status_code",500);
 8         Map<String,Object> map = new HashMap<>();
 9         map.put("code",404);
10         map.put("message",e.getMessage());
11         return "forward:/error";
12     }
13 }

1 public class MyErrorAttributes extends DefaultErrorAttributes {
2     @Override
3     public Map<String, Object> getErrorAttributes(WebRequest webRequest, boolean includeStackTrace) {
4         Map<String, Object> map =  super.getErrorAttributes(webRequest, includeStackTrace);
5         map.put("msg","coreqi");
6         return map;
7     }
8 }