jsp和js中获取项目路径名

一.jsp
a.<%=request.getContextPath()%>//结果:/projectName
b.${pageContext.request.contextPath}//结果:/projectName
用法：
<link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath}/order/css/OrderCss.css" />
<link rel="stylesheet" type="text/css" href=<%=request.getContextPath()%>+"/order/css/OrderCss.css" />

二.js
a.\'${pageContext.request.contextPath}\'//结果:/projectName
b.\'<%=request.getContextPath()%>\'//结果:/projectName
用法：
<script>
function searchData(dom){
　　$(dom).attr(\'disabled\', true);
　　var url = \'${pageContext.request.contextPath}/OrderController/getOrders.jsp?\'+$(\'#orderForm\').serialize();
　　var url = \'<%=request.getContextPath()%>\'+\'/OrderController/getOrders.jsp?\'+$(\'#orderForm\').serialize();
　　$(\'#dataDiv\').html(\'数据加载中...\').load(url, function(){
　　　　$(dom).attr(\'disabled\', false);
　　});
}
<script>