ajax验证是否已经存在

		function fnc_submit(){
				var f = document.forms[0];
				 
				//校验对外地址的唯一性
				if(!dynamicCheckOutPutUrlKeyAPI()){
					g_alert('warn', '对外地址资源名已被占用');
					return false;
				}  
				f.action = "insertAPIResource";
				f.submit();
				
				
				 
			}

// 校验修改接口资源唯一
			function dynamicCheckInsertAPI(){
				var flag = true;
				$.ajax({
					type : "post",
					url : "dynamicCheckInsertAPI",
					dataType : "json",
					data : {
						businessName : trim($("#businessName").val()),
						version : trim($("#version").val()),
						teamId : '${apiResource.teamId }',
						id : '${apiResource.id }'
					},
					async : false,
					cache : false,
					success : function(data){
						if(data.errorCode > 0){
						   	flag = false;
						}
					}
				});
				return flag;
			}

/**
	 * 新增对外地址校验唯一性 
	 * @param  
	 * @return
	 */
	@RequestMapping("dynamicCheckOutPutUrlKeyAPI")
	public String dynamicCheckoutputUrl(@RequestParam("outputUrlKey") String outputUrlKey, HttpServletRequest request, HttpServletResponse response){
		PrintWriter out = null;
		response.setContentType("application/json");
		response.setCharacterEncoding("UTF-8");
		
		//新增时接口资源唯一
		int count = 0;
		count = apiResourceService.checkOutPutUrlKey(outputUrlKey);
		ResultBean resultBean = new ResultBean();
		resultBean.setErrorCode(String.valueOf(count));
		resultBean.setResultData("");
		try {
			out = response.getWriter();
			out.write(SysTool.objectToJson(resultBean));
			out.flush();
			out.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return null;
	}