在jsp页面里面设置全局引用文件
head.jsp文件
将项目中所需要用到次数比较多的的插件，库等，同意放在一个jsp文件里面，命名为head.jsp文件，相当于一个全局的
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!-- 导入标签库 -->
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
<meta charset="utf-8"/>
<meta name="renderer" content="webkit"><!--360默认极速模式-->
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta content="width=device-width, initial-scale=1.0" name="viewport"/>
<meta http-equiv="Content-type" content="text/html; charset=utf-8">
<meta content="" name="description"/>
<meta content="" name="author"/>
<!-- 设置全局变量 -->
<base href="<%=request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()%><c:url value="/"/>"/>
<c:set var="ctx" value="${pageContext.request.contextPath}"/>
<link href="${ctx}/css/common/font-awesome.min.css" rel="stylesheet" type="text/css" />
<link href="${ctx}/css/common/ionicons.min.css" rel="stylesheet" type="text/css" />
<link href="${ctx}/css/common/AdminLTE.css" rel="stylesheet" type="text/css" />
<link href="${ctx}/css/global/optimize.css" rel="stylesheet" type="text/css" />
<!-- jQuery插件 -->
<script src="${ctx}/js/global/jquery/jquery.min.js"></script>
<script src="${ctx}/js/global/jquery-file-upload/js/vendor/jquery.ui.widget.js"></script>
<script src="${ctx}/js/global/jquery-file-upload/js/jquery.iframe-transport.js"></script>
<script src="${ctx}/js/global/jquery-file-upload/js/jquery.fileupload.js"></script>
<!-- 日历插件-->
<script src="${ctx}/js/global/date/jedate/jedate.js"></script>
<!-- bootstrap插件 -->
<link href="${ctx}/css/common/bootstrap.min.css" rel="stylesheet" type="text/css" />
<script src="${ctx}/js/global/bootstrap/bootstrap.min.js" type="text/javascript"></script>
<!-- 新版 -->
<link href="${ctx}/js/global/bootstrap-table/bootstrap-table.min.css" rel="stylesheet">
<script src="${ctx}/js/global/bootstrap-table/bootstrap-table.min.js"></script>
<script src="${ctx}/js/global/bootstrap-table/bootstrap-table-zh-CN.min.js"></script>
<!--左侧滑动 -->
<script src="${ctx}/js/global/AdminLTE/app.js" type="text/javascript"></script>
<!-- layer插件 -->
<script src="${ctx}/js/global/layer/layer.js" type="text/javascript"></script>
<script type="text/javascript">
var pathName=window.document.location.pathname;
var ROOT=pathName.substring(0,pathName.substr(1).indexOf('/')+1);
</script>在每个模块的jsp文件里面 不需要在一次引入bootstrap插件，layer插件，jQuery插件，只需要在head和meta之间写上这段代码<%@include file="../include/head.jsp"%> ，引入head.jsp文件即可，简单方面，不需要再一次在每个jsp页面重复引入所需要的或者删掉不需要的，提高了效率。
<head>
<!-- 引入各种头文件 -->
<%@include file="../include/head.jsp"%>