@RequestMapping("/check/{param}/{type}")

     @ResponseBody

     public Object checkData(@PathVariable String param, @PathVariable Integer type, String callback) {

         TaotaoResult result = null;

         // 参数有效性校验

         if (StringUtils.isBlank(param)) {

             result = TaotaoResult.build(400, "校验内容不能为空");

         }

         if (type == null) {

             result = TaotaoResult.build(400, "校验内容类型不能为空");

         }

         if (type != 1 && type != 2 && type != 3) {

             result = TaotaoResult.build(400, "校验内容类型错误");

         }

         // 校验出错

         if (null != result) {

             if (null != callback) {

                 JSONPObject jsonpObject = new JSONPObject(callback, result);

                 return jsonpObject;

             } else {

                 return result;

             }

         }

         // 调用服务

         try {

             result = userService.checkData(param, type);

         } catch (Exception e) {

             result = TaotaoResult.build(500, ExceptionUtil.getStackTrace(e));

         }

         if (null != callback) {

             JSONPObject jsonpObject = new JSONPObject(callback, result);

             return jsonpObject;

 //            MappingJacksonValue mappingJacksonValue = new MappingJacksonValue(result);

         //    mappingJacksonValue.setJsonpFunction(callback);

 //            mappingJacksonValue.setValue(callback);

 //            return mappingJacksonValue;

         } else {

             return result;

         }

     }