BTW if you want the browser to show an "Open/Save" dialog you need to
set the Content-Disposition header too.
Geoff
On 1/26/06, Raul Raja Martinez <[EMAIL PROTECTED]> wrote:
> Yes it is possible, ussing a implementation of IEngineService such as:
>
> public class ExcelToBrowser implements IEngineService {
>
> private void toBrowser(HttpServletRequest request,
> HttpServletResponse
> response) {
> try {
>
> response.setHeader("Expires", "0");
> response.setHeader("Cache-Control", "must-revalidate, post-check=0,
> pre-check=0");
> response.setHeader("Pragma", "public");
> // setting the content type
> response.setContentType("application/octect-stream");
> // the contentlength is needed for MSIE!!!
>
> ServletOutputStream out = response.getOutputStream();
> ByteArrayOutputStream baos = new ByteArrayOutputStream();
>
> //Here your excel generation library might have some way to put the
> stream to baos
>
> baos.writeTo(out);
> out.flush();
>
>
>
> } catch (Exception e2) {
> //Exception handling
> }
>
>
>
>
>
> public String getName() {
> return "excelToBrowser";
> }
>
> private HttpServletResponse response;
>
> public void setResponse (HttpServletResponse response) {
> this.response = response;
> }
>
> private HttpServletRequest request;
>
> public void setRequest (HttpServletRequest request) {
> this.request = request;
> }
>
>
> public void service(IRequestCycle arg0) throws IOException {
>
> makeTXT(request, response);
>
> }
>
> public ILink getLink(boolean arg0, Object arg1) {
> return null;
> }
> }
>
>
> Later in your hivemodule.xml:
>
> <contribution configuration-id="tapestry.services.ApplicationServices">
> <service name="pdf" object="service:ExcelToBrowser" />
> </contribution>
>
> <service-point id="ExcelBrowser"
> interface="org.apache.tapestry.engine.IEngineService">
> <invoke-factory model="singleton">
> <construct class="yourpackage.ExcelToBrowser" />
> </invoke-factory>
> </service-point>
>
> Even though this example doesn't directly show how to output the excel
> file you might find it useful to output pretty much any kind of file,
> what your browser will use to handle the file is
> response.setContentType("application/octect-stream"); refer to other
> mime types at: http://www.iana.org/assignments/media-types/ to tell your
> browser how to handle other extension
> you can create links to your service using the Service Link:
> http://jakarta.apache.org/tapestry/tapestry/ComponentReference/ServiceLink.html
>
> best regards.
>
> Raul Raja.
>
>
> Vincent wrote:
> > I would like to popup excel file into the client web browser, then he
> > can decide whether to open it , or save to the disk, is it possible
> > to do that in Tapestry?
>
>
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