[JSP/Newbie]: howto write my own jsp:include tag?

Question

Hi folks,
I'm trying to write a replacement tag for <jsp:include> (which shall later decide upon its context what to include..), i.e. I want to include another JSP from within a tag.
Unfortunately right now my best bet does not allow to control the position of the included JSPs output in my output stream - it prints directly :-((
// index.jsp is my startpage:
<%@ taglib uri="/cistags" prefix="cis" %>
index.jsp START:
<cis:include file="/theincludefile.jsp" />
index.jsp ENDE
// theincludefile.jsp is the included file
-->INCLUDEFILE<--
// include.java is my current idea to approach this:
public class include extends TagSupport {
private String jspName;
public void setFile(String name) {
this.jspName = name;
public int doEndTag() {
HttpServletRequest request =
(HttpServletRequest) pageContext.getRequest() ;
HttpServletResponse response =
(HttpServletResponse) pageContext.getResponse() ;
try {
request.getRequestDispatcher(
response.encodeURL(jspName)).include(request,response) ;
catch (Exception e) { }
return EVAL_PAGE;
the result expected is:
index.jsp START:
-->INCLUDEFILE<--
index.jsp ENDE
but instead I receive:
-->INCLUDEFILE<--
index.jsp START:
index.jsp ENDE
So how can I get hold of the ouput generated by the JSP I'm calling through RequestDispatcher.include so that I can rewrite it into my own output stream here?
Is someone out there able to point me into the right direction?
Ingo
[email protected]

Answer 1

check this article out
http://www.javaworld.com/javaworld/jw-09-2000/jw-0915-jspweb.html