jsp頁面嵌入如下代碼：
<%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%>測試案例：
<script type="text/javascript" src="<%=basePath%>/js/header.js"></script>
Way2：通過EL運算式
EL運算式的文法詳解請參閱：http://blog.csdn.net/qwerasdf123/article/details/4189889
在jsp頁面<html>標籤上面添加如下代碼：
<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core_rt"%><c:set var="sc">${pageContext.request.contextPath}</c:set>
測試案例：
<script type="text/javascript" src="${sc}/js/header.js"></script>
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