jquery validate remote方式

需要首先下载jquery.metadata.js和jquery.validate.js

	@RequestMapping("/hasexists")
	public @ResponseBody String hasexists(@RequestParam String type) {
		Rule rule = ruleDao.findUniq("type", type);
		if(rule!=null)
		{
			return "false";
		}
		else
		{
			return "true";
		}
	}
	

 

			<p>
				<label>类型：</label>
				<input id="type" name="type" class="required {remote:'payment/rule/hasexists',messages:{remote:'该类型已被使用'}}" type="text" size="20" />
			</p>

 

显示结果：