springboot攔截器返回json數據給前端

if(StringUtils.isEmpty(token)){
 response.setCharacterEncoding("UTF-8");
 response.setContentType("application/json; charset=utf-8");
 PrintWriter out = null;
 JSONObject res = new JSONObject();
 res.put("success", false);
 res.put("message", "請攜帶token");
 out = response.getWriter();
 out.append(res.toString());
 return false;
}