validatebox 验证数据 代码如下，大神们，哪里写错了请指教

[ypg131]

$( function() {
		 	debugger;
		 	$.extend($.fn.validatebox.defaults.rules, {    
			validatecode: {    
	            validator: function(value,param){ 
	            	var i=0;
	            	$.ajax({
	            		url:'<@s.url '/mdm_pro_apply/validatecode'/>',
	            		data:{'proClassCode':value,'cid':row.id},
	            		async:false,
	            		success:function(result){
	            			
	            			i=result.msg;  
	            		}
	            	});
	            	
	              	return i==0;
	              	console.info(i);
	            },    
	            message: '数据重复'   
		        }
		    })
		    });

controller层是这样写的，

引用

@RequestMapping(value="/validatecode")
    @ResponseBody
    public Map<String,Object> validatecode(HttpServletRequest req,HttpServletResponse response){
    	Map<String,Object> map=new HashMap<String,Object>();
    	Map<String,Object> params=new HashMap<String,Object>();
    	int ret=0;
    	params.put("proClassCode", req.getParameter("proClassCode"));
    	params.put("cid", req.getParameter("cid"));
    	MdmProApply mdmProApply=new MdmProApply();
    	try
    	{
    		List<MdmProApply> item=mdmProApplyManager.findByBiz(mdmProApply, params);
    		ret=item.size();
    	}
    	catch(ManagerException ex)
    	{
    		ret=0;
    	}

最后添加数据的时候根本没反应     大神们，哪里写错了请指教
    	
    	map.put("msg", ret);
		return map;
    }