Can anyone help?
On 2月17日, 下午4时37分, koko <ang.ga...@gmail.com> wrote:
> Hi Ginger:
> Thanks a lot for your kind help :)
> Yeah that's what I really want to do.
> but there is still a problem, now I am just in development period, how
> can I write a servlet that can share the session with GWT project ?
> For now they are using different port and probably different tomcat?
> Also my textara contains some of the pictures, can I get them in the
> PDF as well?
> when I get the content of textarea I just use textarea.gettext();
>
> Thanks a lot for your help!
>
> Regards.
>
> On 2月17日, 上午9时53分, ginger_ninja <david.s.k...@gmail.com> wrote:
>
> > Hi koko,
>
> > Ian is right, I encountered this exact same problem on the project I'm
> > currently working on. In your case it sounds like you want to send
> > some data from a textarea over to the server and put some dynamic
> > content in the PDF, is that right?
>
> > The best solution I've found is to separate what you're doing into two
> > stages. The first stage I call the preparation stage. The preparation
> > stage involves preparing the data create the PDF from and storing it
> > somewhere temporarily, in my case I used the user's session. Once the
> > data is prepared and stored away you can safely complete the RPC
> > call.
>
> > The second stage is what I call the generation or retrieval stage.
> > This involves actually generating and retrieving the PDF using the
> > data that was previously stored in the session. This stage is
> > triggered in the onSuccess callback method of the previous RPC call.
> > Really all that needs to be done inside the onSuccess method is to
> > open a new window and point the window.location property to the URL of
> > the servlet you're going to create. Using Ian's technique you can
> > write a simple servlet like he said, generate the PDF using the stored
> > data, and set the content type to application/pdf before writing the
> > byte stream to the servlet's output stream (you can find this inside
> > the HttpResponse object). This will tell the browser that a PDF is
> > coming it's way and it will automatically handle it appropriately.
>
> > Dave
>
> > On Feb 17, 11:54 am, koko <ang.ga...@gmail.com> wrote:
>
> > > Thanks Ian, I had tried this way, but what how should I post my data
> > > in textarea to the server side? I encounter like SOP errors, for my
> > > tomcat runs on port 8080, while GWT on 8888, I also tried to set in
> > > the same port 8888, won't work, can you teach me how to configure or
> > > set in detail, I am doing this for my project, thanks for a lot!
> > > Regards.
>
> > > On 2月17日, 上午12时34分, Ian Petersen <ispet...@gmail.com> wrote:
>
> > > > On Mon, Feb 16, 2009 at 4:05 PM, koko <ang.ga...@gmail.com> wrote:
> > > > > I have a problem with converting byte array to pdf file, this will be
> > > > > processing in the client side.
> > > > > in my project the PDF file was constructed by the content in the
> > > > > textarea which user type in, after user press PDF button it will
> > > > > trigger RPC call and get byte array response from server side,
> > > > > actually it was a PDF file, I want to shown it to the user and let
> > > > > them download.
> > > > > Now after RPC byte array was stored in variable called result, what
> > > > > should I do next? Can anyone help me please..
>
> > > > That approach won't work. To serve a PDF to the user, write a servlet
> > > > that spits out the PDF, annotated with the appropriate Content-Type
> > > > header. When the user presses the PDF button, either open a new
> > > > window or display an iframe and, in either case, set the URL for the
> > > > new window to be the address of your PDF-generating servlet. If you
> > > > want to prompt the user to save the PDF to disk rather than displaying
> > > > it the browser, set the Content-Disposition header appropriately. (I
> > > > forget what value you need there, but you should be able to find it
> > > > with a good search engine.)
>
> > > > Ian
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