公共页面

一、公共页面
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%
    String path = request.getContextPath();
    String basePath = request.getScheme() + "://"
            + request.getServerName() + ":" + request.getServerPort()
            + path + "/";
%>
<c:set var="ctx" value="<%=basePath%>" scope="request" />

二、页面引用

<div class="layui-tab-content">
    <div class="layui-tab-item layui-show">
        <iframe src='${ctx}/welcome.html' frameborder="0" scrolling="yes" class="x-iframe"></iframe>
    </div>
</div>