I actually have implemented a hack to do this in one former project.
It was a wizard like application and the last jsp page presented a
summary view. When the user accepted, the content of the page was send
to him/her via e-mail.
So the following bits of code work but I think it's really a hack, it
was just needed as a temp solution before we had PDF generation in
place.
In the Action class, the following code is used to capture the output of
a "jsp execution"
RequestDispatcher rd =
getServlet().getServletContext().getRequestDispatcher("my.jsp");
GrabberResponse resp = new GrabberResponse();
rd.forward(request, resp);
resp.getString();
The trick is to implement a custom HttpServletReponse class, with just
the minimum required methods implemented to make it work and capture the
output.
In the listing below, I have just left the useful methods, all the other
methods required by the interface are empty or returning some dummy
value (null, 0, ...).
Additionally you can put a log statement in each method so you can trace
what you need to implement to make it work.
public class GrabberResponse implements HttpServletResponse {
private ServletOutputStream os;
private PrintWriter pw;
public GrabberResponse() {
os = new ServletOutputStream();
pw = new PrintWriter(os);
}
public String getString() {
return os.getString();
}
public javax.servlet.ServletOutputStream getOutputStream() throws
IOException {
return os;
}
public PrintWriter getWriter() throws IOException {
return pw;
}
}
You also need a customer ServletOutputStream associated with it.
Here, as it extends an existing class, all the methods not listed use
the parent's implementation.
You can also re-implement the methods to add a log statement if required
and then simply call super's implementation.
public class ServletOutputStream extends
javax.servlet.ServletOutputStream {
private ByteArrayOutputStream os;
public ServletOutputStream() {
os = new ByteArrayOutputStream();
}
public String getString() {
return os.toString();
}
/**
* This is the only method that is really delegated to the enclosed
output stream.
*/
public void write(int b) throws IOException {
os.write(b);
}
}
Eric.
> -----Original Message-----
> From: Joe Hertz [mailto:[EMAIL PROTECTED]
> Sent: Saturday, January 24, 2004 3:47 AM
> To: [EMAIL PROTECTED]
> Subject: Re: JSP to static html...
>
> I had a requirement like this once, but the reports were generated by
> Seagate
> Crystal. It generated the static HTML. JSP seems like the wrong tool
to be
> using here.
>
> I would think (speaking out of my hat here) if the report itself was a
JSP
> page what you MAY be able to do is something like, in your action,
making
> an
> HTTP request yourself to the JSP, receive the HTML that gets generated
in
> response into a text buffer, save it some place, and then send the
user to
> it. If he pushes the button, you have an HTML file you can send him
to.
>
> It's a complete and utter hack, but hey.
>
>
>
> ----- Original Message -----
> From: "Jacob Wilson"
> To: "Struts Users Mailing List"
> Sent: Friday, January 23, 2004 12:30 PM
> Subject: JSP to static html...
>
>
> > Hi All...
> >
> > I have a specific requirement in my project... I want to convert the
> > JSP
> pages to static html pages and save them in a local directory... How
do I
> achieve this functionality??? Any suggestions appreciated.
> >
> > Thanks much.
> >
> > -Jacob
> >
> >
> > ---------------------------------
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