IE浏览器兼容出现servlet/servlet/XXXservlet 的404 问题

在超链接中用来跳转servlet

function subSearch(){
var objusername=document.getElementById("username");
var objuserid=document.getElementById("userid");
var username=objusername.value;
var userid=objuserid.value;
var url="<%=basePath%>"+"servlet/UsersServlet?"; 

  //这里跳转的连接要加上"<%=basePath%>"   或者改为：var url=${pageContext.request.contextPath}/servlet/UsersServlet?

if(null!=username && ""!=username){
url+=("username="+username);
}
if(null!=userid && ""!=userid){
url+=("&userid="+userid);
}
window.location.href=url;
}