ok,
what you will need is a datapump which converts an output stream to an
input stream.
See: http://ostermiller.org/convert_java_outputstream_inputstream.html
Method 1 is the simplest: let velocity write to abytearrayoutputstream
and use the byte array to construct an input stream object. voila.
regards
c)hristian
The thing is that I don't know how to get my OutputStreamWriter into
InputStream so that StreamResponse is able to stream it to the user. This is
probably a very basic problem but I'm not very experienced with that.
Right now there is nothing streaming but writing to System.out. But I want
to do something like this:
StreamResponse onSubmitFromDescription() {
InputMaker iMaker = new InputMaker(description);
InputStream is = iMaker.makeDescription();
return TextStreamResponse(is,"Description");
}
Then, this method should return, of course, an InputStream:
public void makeDescription(){
try {
configure(engine);
} catch (Exception e) {}
try {
Template template =
Velocity.getTemplate("src/main/resources/templates/description.vm");
VelocityContext velocityContext = new VelocityContext();
OutputStreamWriter osw = new
OutputStreamWriter(System.out);
velocityContext.put("desc", this.description);
template.merge(velocityContext, osw);
osw.flush();
osw.close();
} catch (Exception e) {}
}
And, to be complete, my TextStreamResponse Class:
public class TextStreamResponse implements StreamResponse {
private InputStream is;
private String filename = "default";
public TextStreamResponse(InputStream is, String filename){
this.is = is;
this.filename = filename;
}
public String getContentType() {
return "text/plain";
}
public InputStream getStream() throws IOException {
return is;
}
public void prepareResponse(Response arg0) {
arg0.setHeader("Content-Disposition", "attachment; filename=" +
filename +
".txt");
}
}
Thanks a lot for helping me with that!
Moritz
Christian Gorbach wrote:
sure. if you post your streaming snippet we can take a look...
Hello,
I'm trying to stream a text file I created with Velocity very similar to
the
way it is done
http://wiki.apache.org/tapestry/Tapestry5HowToCreateADynamicPDF here but
it
doesn't work. The text is stored in a OutputStreamWriter object.
Is it possible to stream something else than binary data with tapestry?
Thanks,
Moritz
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