스프링, 직접 response 하는 법

              response.setCharacterEncoding("UTF-8");
                response.setContentType("application/json");
               response.getWriter().write("{ \"success\":false," +
                        " \"code\": \"-1016\"," +
                       "  \"msg\": \"인증 토큰이 만료되었습니다.\"" +
                        "}");
           }