[jdom-interest] Re: Problems with JSP/JDOM

Thu Sep 23 04:29:58 PDT 2004

rforster at melbpc.org.au disse:
> Hi Flavio.
>
> You wrote:
>
>> recently converted an app fro terminal-mode to JSP (In teminal mode
>> everything runs ok).
>
>> Everything works well in JSP until trying to get the returned XML.
>> I couldn't find anything about this...
>
>
> I teach exactly this topic here in Australia.  There is a collection of
> tutorials at
>

Thanks lot. But my JSP doesn't involve file writing. It calls another app
that works with sockets. The response XML comes over the socket and can
never be stored as a file. It must be parsed and formatted as HTML using
the socket OutputStream. Sometimes it works, sometimes I get "Premature
end of file exception". No idea about this. I can't identify what's going
wrong since the app behavior seems randomical.

The JSP fragment where I believe the problem resides is:

<%

// at this point, inputDoc is correctly assembled.
// variable declarations supressed. They are OK, believe me ;)

XMLOutputter outputter = new XMLOutputter();
Socket sock = new Socket("localhost",4445);
outputter.output(inputDoc,sock.getOutputStream());
sock.getInputStream().read(); // This is a dummy byte sent by socket to
say "OK, I finished."
Thread.currentThread().sleep(1000);
byte[] socketThing = new byte[sock.getInputStream().available()];
sock.getInputStream().read(socketThing);
SAXBuilder builder = new SAXBuilder();

Document doc = builder.build(new ByteArrayInputStream(socketThing));

%>
<html>
<body>
<font face="Arial, Helvetica, Sans-serif" size="2">
<%
out.println("<h3>Answer</h3>");
out.println("Empresa de captura: " +
transacao.getChild("empresacaptura").getText() + "<br>");
out.println("Tipo da operação: " +
transacao.getChild("tipooperacao").getText() + "<br>");
}
sock.close();
%>

--
Flávio Marim