开发者

Java (JSP/Servlet): equivalent of getServletContext() from inside a .jsp

开发者 https://www.devze.com 2022-12-31 05:27 出处:网络
How should I access the ServletContext from a .jsp? For example, how can I call the getRealPath method from inside a .jsp.

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><开发者_如何学Pythonbody>" );
        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>


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)


Try this:

${pageContext.servletContext}


I think this should work fine on a JSP Page:

<body>
<%
out.print(getServletContext().getAttribute("attribute"));
%>
</body>


Simply use application.getRealPath(" ");.


if you're looking to use the getRealPath() method, you might consider looking into a jstl tag called 'c:url'

<c:url value="text/en" />
0

精彩评论

暂无评论...
验证码 换一张
取 消

关注公众号