springmvc 返回json格式数据

@Controller@RequestMapping("/sso/admin/monthParameterController")public class MonthParameterController {@Autowiredprivate IOtherParametersService otherParametersService; @RequestMapping("/delfn")public @ResponseBody JSONObject delFn(HttpServletRequest request,HttpServletResponse response, ModelMap modelMap)   {String ids = request.getParameter("ids");  JSONObject json = new JSONObject();try {otherParametersService.deleteOtherParameters(ids);json.put("result", true);} catch (SQLException e) { e.printStackTrace();}return json;}}

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