> Is it generally possible to output a pdf stream via a java.io.Writer
object?
Well a java.io.Writer is used for character output. A PDF is binary output,
especialy if you use filters (Flate, ...)
I think it could be possible, but no good idea! The problem is, that a
writer
handles character data (2 bytes) and it can convert the data (for example
"\n\r"
to "\r" or something) and then the offsets in the PDF don't fit any more.
The more I think about it, I'd say "let it be", also because a JSP is
constructed
to return character data, not binary. We tried to implement a
"download"-JSP, but
implemented that in a servlet, because there were many errors and caveats.
Greetings
Christian Beer
> -----Ursprüngliche Nachricht-----
> Von: Holger Prause [mailto:[EMAIL PROTECTED]]
> Gesendet: Freitag, 1. März 2002 13:59
> An: [EMAIL PROTECTED]
> Betreff: output PDF via java.io.Writer
>
>
> Hello,
>
> I am using Fop-0.20.2
>
> Is it generally possible to output a pdf stream via a
> java.io.Writer object
> ?
>
> I know its better to use OutputStreams objects to output
> binary streams as
> pdf,but i want to use a JSPWriter(in a TagLibrary Class) to
> output a Pdf
> Stream so that i can use it as embedded pdf.
>
> The following sourcode should do the the job
>
>
> InputSource foInputSource = getInputSource();
> //buffer fo outputStream
> ByteArrayOutputStream foBufferStream = new ByteArrayOutputStream();
> Driver driver = new Driver(foInputSource,foBufferStream);
> driver.setRenderer(driver.RENDER_PDF);
> //perform the fo rendering process
> driver.run();
>
> String foOutString = new String(foBufferStream.toByteArray());
> //the writer reference is as reference to the JSPWriter which
> was passed as
> Argument
> writer.write(foOutString);
> writer.flush();
>
> The problem is that when i convert a ByteArrayOutputStream to
> a String ,
> some characters are converted wrong.
>
> For Example , the HEX 8d will be converted to HEX 3f , how
> can i avoid this
> ? What encoding do i have to use to avoid this ?
>
> Thank you in advance,
>
> Holger
>
>
>
> --
> GMX - Die Kommunikationsplattform im Internet.
> http://www.gmx.net
>
>
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