Java (JSP/Servlet): equivalent of getServletContext() from inside a .jsp
Question
How should I access the ServletContext from a .jsp? For example, how can I call the getRealPath method from inside a .jsp.
Here's a Servlet, which works fine:
protected void doGet(
HttpServletRequest req,
HttpServletResponse resp
) throws ServletException, IOException {
resp.setContentType( "text/html; charset=UTF-8" );
final PrintWriter pw = resp.getWriter();
pw.print( "<html><body>" );
pw.print( getServletContext().getRealPath( "text/en" ) );
pw.print( "</body></html>" );
pw.flush();
pw.close();
}
Now I'm looking for the exact line I'm supposed to insert in the following .jsp to do exactly the same thing as the servlet above is doing.
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<body>
... // What should I insert here
</body>
</html>
5 answers
solution1
12 ACCPTED 2010-05-24 16:18:27
The ServletContext is accessible via the application implicit object.
Since each JSP is a servlet, you can also use getServletContext() .
But.. avoid having code like that in the JSP. Instead, obtain the value you need in your servlet and set it as a request attribute, simply reading it in the JSP (via JSTL preferably)
solution2
11 2010-05-24 16:13:51
尝试这个：
${pageContext.servletContext}
solution3
3 2010-05-24 16:16:23
I think this should work fine on a JSP Page:
<body>
<%
out.print(getServletContext().getAttribute("attribute"));
%>
</body>
solution4
2 2010-05-24 16:23:17
如果你想使用getRealPath（）方法，你可以考虑查看一个名为'c：url'的jstl标签
<c:url value="text/en" />
solution5
1 2012-12-06 13:48:50
Simply use application.getRealPath(" "); .
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