报错Failed to execute 'send' on 'XMLHttpRequest': Failed to load

function jylogInfo(username,password){

		//debugger;

		var urlre = "http://127.0.0.1:2315/framework/ws/plkslx/lxxtjk/loginuser/loginJY/arg0/"+username+"/arg1/"+password



		var  xmlhttp=new XMLHttpRequest();

		xmlhttp.open("GET",urlre,false);

		xmlhttp.send();

		var res = xmlhttp.responseXML.getElementsByTagName("ns1:loginJYResponse")[0].innerHTML;

		if(res=="success"){

			return true;

		}else{

			alert(res);

			return false;

		}

	}