D 动态获取服务器访问路径

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%
    //动态获取base标签的路径
    String basePath = request.getScheme()  //http
    + "://"
    + request.getServerName()              //ip
    + ":"
    + request.getServerPort()              //port
    + request.getContextPath()             //工程名
    + "/";
%>
<%--<%=basePath%>--%>
<!--        此base路径对应web目录-->
<base href="<%=basePath%>">