@RequestMapping(
     value = "/parseJson",
     method = {RequestMethod.POST})
 public void saveDemo(@RequestBody DemoDTO demo) {
   LogUtil.info("demo = " + demo.toString());
 }
 @RequestMapping(
     value = "/getxml",
     produces = {"application/xml;charset=UTF-8"})
 public DemoDTO getxml(DemoDTO obj) {
   return new DemoDTO(obj.getId() + 1, obj.getName() + "yy");
 }