jsp  

 <div class="form"><label class="Validform_label">选项编号: </label><input name="typecode" class="inputxt" value="${type.typecode }" datatype="/^[A-Za-z0-9\u4E00-\u9FA5\uf900-\ufa2d\.\s]{1,50}$/"ajaxurl="dbTypeGroupController.do?checkType&code=${type.typecode }&typeGroupCode=${typegroup.typegroupcode}"><span class="Validform_checktip"><t:mutiLang langKey="common.range1to10" /></span></div>

 

 controller

 

/*** 检查字段是否重复** @param request* @return*/@RequestMapping(params = "checkType")@ResponseBodypublic ValidForm checkType(HttpServletRequest request) {ValidForm v = new ValidForm();String typecode=oConvertUtils.getString(request.getParameter("param"));String code=oConvertUtils.getString(request.getParameter("code"));String typeGroupCode=oConvertUtils.getString(request.getParameter("typeGroupCode"));StringBuilder hql = new StringBuilder("FROM ").append(DbCheckTypeEntity.class.getName()).append(" AS entity WHERE 1=1 ");hql.append(" AND entity.typeGroup.typegroupcode =  ?");hql.append(" AND entity.typecode =  ?");List<Object> types = this.systemService.findHql(hql.toString(),typeGroupCode,typecode);if(types.size()>0&&(code==null||!code.equals(typecode))){v.setInfo("类型已存在");v.setStatus("n");}return v;}

 效果