Still how to parse JSP within a Servlet

[Eduard Witteveen <Ed...@omroep.nl>]

Hello ,

I'm trying to parse a jsp page within my servlet. The reason i want to to that is to use anothor program to parse a script which is generated after parsing the jsp. The parsing should give me back a script, which is used by an external program, after which i will send the result of this external program to the user.
An example(im using it for someting different, but its a good example) of this could be that i have a latex document with jsp tags in the document. After the+jsp step, it would give me a latex only document. But i dont want to send this+latex document to the users. After i have this latex document, i want to run an external program (nah more then one in this situation (latex *.tex and dvi2ps *.dvi) which will give me back a postscript document.

I tried the following(when this works, i can include my own ServletSesponse class which fills a String):

    public synchronized void service(HttpServletRequest req, HttpServletResponse res) throws ServletException,IOException {
        javax.servlet.RequestDispatcher dispatcher = getServletContext().getNamedDispatcher("jsp");
        if(dispatcher == null) {
            log.error("AAARRRGGGG dispatcher was null, please enter a valid name for jsp parser('"+dispatcherName+"')!");
        }
        dispatcher.include(req, res);
   }

(neither include nor forward worked).

    public synchronized void service(HttpServletRequest req, HttpServletResponse res) throws ServletException,IOException {
        JspFactory factory = JspFactory.getDefaultFactory();
        if(factory==null) {
            log.error("im getting this error all the time.....");
        }
        StringResponse tempResponse = new StringResponse();
        PageContext pageContext = factory.getPageContext( this, //the requesting servlet
                                                            req, //the current request pending on the servlet
tempResponse, //the current response pending on the servlet
                                                            null, //the URL of the error page for the requesting JSP, or null
                                                            false, //true if the JSP participates in a session
                                                            1024, //size of buffer in bytes, PageContext.NO_BUFFER if no buffer, PageContext.DEFAULT_BUFFER if implementation default.
                                                            true //should the buffer autoflush to the output stream on buffer overflow, or throw an IOException?
                                                        );
        pageContext.include(req.getRequestURI());
        String parsedJsp = tempResponse.getString();
        // now i can use the parsedJsp for generation of
        // somekinda file... let's say a pdf from a tex doc in which i
        // i used jsp....
    }

Please could somebody help me with this, since i dont get it to work myselve and im now working on it for a to long time :)

-- 
Eduard Witteveen	Systeemontwikkelaar NOS Internet
Mediacentrum Kamer 203, tel. +31(0)35 6773059

Sed quis custodiet ipsos custodes? : The sixth Satire from Juvenal