/** @Description: 删除获奖学生 @Created Time: 2013-6-23 下午12:33:54 @Author lys */
 public void mulDelete() {
   ServiceResult result = new ServiceResult(false);
   try {
     result = competitionPrizeStudentService.mulDelete(ids);
   } catch (Exception e) {
     result.setMessage("删除获奖学生失败");
     logger.error("删除获奖学生失败", e);
   }
   String jsonString = result.toJSON();
   ajaxJson(jsonString);
 }