ajax获取Controller分发子页面

<script>
    function show_hidden(str)
    {
        //隐藏全部
        var  i=0;
        var items= document.getElementsByClassName("menu2");
        for(i=0;i<items.length;i++)
        {
            items[i].style.display="none";
        }
        //显示当前隐藏
        var g=document.getElementById(str);
        g.style.display="block";
    }
    //创建访问对象
    function createXMLHTTPObject(){
        var XMLHttpFactories=[
         function () {
             return new XMLHttpRequest();
         },
         function () {
             return new ActiveXObject("Msxml2.XMLHTTP");
         },
         function(){
            return new ActiveXObject("Msxml3.XMLHTTP");
         },
         function () {
             return new ActiveXObject("Microsoft.XMLHTTP");
         }
        ];
        var xmlhttp=false;
        for(var i=0;i<XMLHttpFactories.length;i++) {
        	try{
        		xmlhttp=XMLHttpFactories[i]();
        	}catch (e) {
				continue;
			}
        	break;
        }
        return xmlhttp;       //返回是对象实例
    }
    function addGoods() {
    	alert("你好");
        var x=createXMLHTTPObject();
        var url="http://localhost:8080/RuralSales/toaddgoods";
        x.open("GET",url,true);
        x.onreadystatechange=function () {
            if(x.readyState==4&&x.status==200){
                var o=document.getElementById("home_right");
                alert(x.responseText);
                alert(o);
                o.innerHTML=x.responseText;
            }
        }
        x.send(null);
    }
</script>