response-直接操作方法记录

response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
Map<String, Object> map = new HashMap<>();
map.put("status", 401);
map.put("msg", "无效的凭证");
response.setHeader("Content-type", "application/json;charset=UTF-8");
response.getWriter().print(JSONObject.toJSONString(map));
response.getWriter().close();