Hello everybody,
I have a basic querry about the architecture of the Servlet as well as for
Applet. Why Java has gone for init() in both cases ? as i can do the
initilaization in constructor only ? what are the constraints for the
constructor coz of which i have to go for init() ?
Atul
----- Original Message -----
From: "Julia Zheng" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, January 01, 2002 11:52 AM
Subject: Re: about servletoutputstream
> Richard:
>
> I invoke my servlet via a html file. Since it doesn't
> work properly, I didn't use any request parameters at
> this time. When I invoke doPost(req, res) by using
> <method = "POST" >, nothing get display, the screen is
> empty. also nothing in the log file.
>
> thank you so much for help. I really have no idea.
>
>
> julia
>
> --- Richard Yee <[EMAIL PROTECTED]> wrote:
> > Julia,
> > How are you invoking the servlet via the post
> > method? It doesn't seem to
> > use any request parameters. What happens when you
> > try and invoke it via
> > the post method? Have you check your server logs?
> >
> > Regards,
> >
> > Richard
> >
> >
> > At 01:31 PM 12/31/2001 -0800, you wrote:
> > >thank you for your reply!
> > >
> > >yes, I do implement doPost() method.
> > >
> > >my coding:
> > >
> > > public void doPost(HttpServletRequest request,
> > >HttpServletResponse response)
> > > throws ServletException, IOException
> > > {
> > > ServletOutputStream out =
> > >response.getOutputStream ();
> > > // Set the output data's mime type
> > > response.setContentType(CONTENT_TYPE);
> > > // create an input stream from fileURL
> > > String fileURL =
> > "http://com.company.abc.xml";;
> > > //Content-disposition header - open in browser
> > > response.setHeader("Content-disposition",
> > >"inline" );
> > >
> > > BufferedInputStream bis = null;
> > > BufferedOutputStream bos = null;
> > > URL url = new URL ( fileURL );
> > >
> > > try
> > > {
> > > URLConnection conn = url.openConnection();
> > > // Use Buffered Stream for
> > reading/writing.
> > > bis = new
> > >BufferedInputStream(conn.getInputStream());
> > > bos = new BufferedOutputStream(out);
> > > byte[] buff = new byte[2048];
> > > int bytesRead;
> > > // Simple read/write loop.
> > > while(-1 != (bytesRead = bis.read(buff, 0,
> > >buff.length)))
> > > {
> > > bos.write(buff, 0, bytesRead);
> > > }
> > > out.flush();
> > > bos.flush();
> > > }
> > > catch(final MalformedURLException e)
> > > {
> > > cat.error ( "MalformedURLException." );
> > > throw e;
> > > }
> > > catch(final IOException e) {
> > > cat.error ( "IOException." );
> > > throw e;
> > > }
> > > finally
> > > {
> > > if (bis != null)
> > > bis.close();
> > > if (bos != null)
> > > bos.close();
> > > }
> > >
> > >public void doGet(HttpServletRequest request,
> > >HttpServletResponse response)
> > > throws ServletException, IOException
> > > {
> > > doPost(request, response);
> > >}
> > >
> > >julia
> >
> >
>
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