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Posted to users@tomcat.apache.org by Eduard Witteveen <Ed...@omroep.nl> on 2001/04/03 13:42:34 UTC
How to get the parsed JSP string
Hello,
I want to do some operations, after that the JSP page has been parsed.
For this i need the get the output of the jsp page, which has been parsed, i want to use this output as input for something else. How can i archief this?
* Is there a way to put more then one servlet after eachother? or
* How can i get the output of the jsp parser, before it is send to the browser, and change this.
greetings,
--
Eduard Witteveen Systeemontwikkelaar NOS Internet
Mediacentrum Kamer 203, tel. +31(0)35 6773059
Sed quis custodiet ipsos custodes? : The sixth Satire from Juvenal
Re: How to get the parsed JSP string
Posted by Eduard Witteveen <Ed...@omroep.nl>.
Rhett Savage <rh...@nonlocal.com> wrote:
> if i understand correctly then one way you could
> accomplish that is simply by reading the output of the
> JSP (which you serve in the usual way) into a string
> using the java.net.URL class, something similar to the
> code below - this way any includes, interpolations,
> calculations that occur in the JSP will already have
> happened by the time it becomes an ordinary string...
No, i dont want to ask the webserver my parsed jsp, but in the webserver itselve retrieve it.
An example of what i try to accomplish is attached below...
>
> rhett
>
> <sourcecode>
> ---
>
> On Tue, 3 Apr 2001, Eduard Witteveen wrote:
>
> > Hello,
> >
> > I want to do some operations, after that the JSP page has been parsed.
> > For this i need the get the output of the jsp page, which has been parsed, i want to use this output as input for something else. How can i archief this?
> > * Is there a way to put more then one servlet after eachother? or
> > * How can i get the output of the jsp parser, before it is send to the browser, and change this.
> >
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....
}
--
Eduard Witteveen Systeemontwikkelaar NOS Internet
Mediacentrum Kamer 203, tel. +31(0)35 6773059
Sed quis custodiet ipsos custodes? : The sixth Satire from Juvenal
Re: How to get the parsed JSP string
Posted by Rhett Savage <rh...@nonlocal.com>.
if i understand correctly then one way you could
accomplish that is simply by reading the output of the
JSP (which you serve in the usual way) into a string
using the java.net.URL class, something similar to the
code below - this way any includes, interpolations,
calculations that occur in the JSP will already have
happened by the time it becomes an ordinary string...
rhett
public String url2String(String url_of_a_jsp) {
String text = "";
String line;
try {
URL u = new URL(url_of_a_jsp);
InputStream in = u.openStream();
in = new BufferedInputStream(in);
BufferedReader br = new BufferedReader( new InputStreamReader(in) );
while ((line = br.readLine()) != null) {
text += line + "\n";
}
}
catch (Exception e) {
System.out.println(e);
}
return text;
}
---
On Tue, 3 Apr 2001, Eduard Witteveen wrote:
> Hello,
>
> I want to do some operations, after that the JSP page has been parsed.
> For this i need the get the output of the jsp page, which has been parsed, i want to use this output as input for something else. How can i archief this?
> * Is there a way to put more then one servlet after eachother? or
> * How can i get the output of the jsp parser, before it is send to the browser, and change this.
>
> greetings,
>
> --
> Eduard Witteveen Systeemontwikkelaar NOS Internet
> Mediacentrum Kamer 203, tel. +31(0)35 6773059
>
> Sed quis custodiet ipsos custodes? : The sixth Satire from Juvenal
>