base.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@ taglib prefix="shiro" uri="http://shiro.apache.org/tags" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<c:set var="ctx" value="http://www.mamicode.com/${pageContext.request.contextPath}"/>
<c:set var="server_attath_path" value="http://service.huadongdata.net/boyun/"/>
 <%-- <c:set var="ctx" value= "http://localhost/"/> --%>

view_ShipImgs.jsp
<div class="asdkl">
    <img target="_blank" src="http://www.mamicode.com/${ctx}${x.imgPath}" />
</div>

jsp全局变量