如何获取path与basePath

<%@ page language="java" contentType="text/html;charset=UTF-8" pageEncoding="UTF-8" %>
<%
    String path = request.getContextPath(); // 获取相对路径
    String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; // 获取绝对路径
%>