Struts2 Access action and JSP page path problem solution----for JSP, pictures, JS, CSS, etc. to get the absolute path of Web engineering __ajax

Way1: Embed Java code inside

The JSP page embeds the following code:

<%
String Path = Request.getcontextpath ();
String basepath = request.getscheme () + "://" +request.getservername () + ":" +request.getserverport () +path+ "/";
%>

Test Cases:

<script type= "Text/javascript" src= "<%=basepath%>/js/header.js" ></script>

Way2: via El expression

An explanation of the syntax for El expressions see: http://blog.csdn.net/qwerasdf123/article/details/4189889

Add the following code to the JSP page

<%@ taglib prefix= "C" uri= "Http://java.sun.com/jstl/core_rt"%> <c:set var=
"SC" >${ Pagecontext.request.contextpath}</c:set>

Test Cases:

<script type= "Text/javascript" src= "${sc}/js/header.js" ></script>

Note: The EL expression can only be used in the JSP page, no more JS and CSS and other format files to use. hard to find a two-hour error, only to find this problem. Hope you can learn the lesson, but also hope to help readers solve problems, save your precious time.