Right now I don't see what could be wrong, but:
what versions of myfaces and Tobago do you use? I use it with myFaces
1.1.6 and Tobago 1.0.11
Also you should check if doAfterLoadingBrowser is ever called, and
check if page:storedReport is a correct id...
The white screen would suggest some runtime exception being thrown or
the response being all wrong..
servletResponse.setHeader("Content-Disposition",
"attachment; filename="+attachmentName);
I believe this should rather be:
servletResponse.setHeader("Content-Disposition",
"attachment; filename=\""+attachmentName +"\"");
(you have ommited the '"', perhaps you have them in attachmentName?
Here's my response method:
public String getReport()
{
fetchReport = false;
FacesContext context = FacesContext.getCurrentInstance();
HttpServletResponse response = ( HttpServletResponse )
context.getExternalContext().getResponse();
String fileName = reportName;
String filePath = reportPath;
int read = 0;
byte[] bytes = new byte[1024];
response.setContentType("application/pdf");
response.setHeader("Content-Disposition", "attachment;filename=\"" +
fileName + "\"");
FileInputStream fis = null;
OutputStream ost = null;
try
{
fis = new FileInputStream(new File(filePath));
ost = response.getOutputStream();
while((read = fis.read(bytes)) != -1)
{
ost.write(bytes,0,read);
}
ost.flush();
ost.close();
}
catch (FileNotFoundException ex)
{
ex.printStackTrace();
}
catch (IOException ex)
{
ex.printStackTrace();
}
FacesContext.getCurrentInstance().responseComplete();
return "";
}
Try with this one :)
Hope it helps,
regards
michael
On 09/04/07, Vinay Konanki <[EMAIL PROTECTED]> wrote:
Thanks Michal,
Modified my jsp and Controller according to your suggestion. its working
fine until generating excel stuff and storing in an worksheet (i.e in
object). but after that its getting blank screen ('White Screen') Its not
triggering the getReport Action.
Here is my code:
in generating Excel Action:
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
public String exportToExcel() {
HSSFWorkbook workbook = createWorkbook(data, context);
setFetchReport(true); // Setting FetchReport to true for rendering the
link in JavaScript
return "";
}
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
in getReport Action:
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
public String getReport() {
Object response = context.getExternalContext().getResponse();
if (response instanceof HttpServletResponse) {
HttpServletResponse servletResponse = (HttpServletResponse)
response;
servletResponse.setContentType("application/vnd.ms-excel");
if (StringUtils.isNotEmpty(attachmentName)) {
servletResponse.setHeader("Content-Disposition", "attachment;
filename="+attachmentName);
}
if(workbook != null)
workbook.write(servletResponse.getOutputStream());
else
System.out.println("workbook is null ");
} else {
//TODO PortletResponse
}
return "";
}
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
in my jsp page:
java Script as follows
___________________________________________________________________________________________________
<tc:cell>
<tc:panel width="0" height="0">
<tc:script>
function doAfterLoadingBrowser()
{
if(!Tobago.pageIsComplete)
{
setTimeout('doAfterLoadingBrowser()',50);
}
else if(document.getElementById('page:storedReport')
!= null)
{
Tobago.submitAction('page:storedReport',false);
alert('Found the Element ID and calling that
storedReport link');
}
else
{
alert('Came to else probably everything failed
and returning nothing');
return;
}
}
doAfterLoadingBrowserTab();
<tc:link label="" action="#{excelExport.getReport }"
id="storedReport"
transition="false"
rendered="#{excelExport.fetchReport}">
</tc:link>
</tc:script>
</tc:panel>
</tc:cell>
___________________________________________________________________________________________________
actual link calling action that generate the excel stuff is as follows:
___________________________________________________________________________________________________
<tc:link label="#{bundle.catalogExport }"
actionListener="#{excelExport.exportToExcel}"
action="#{excelExport.exportToExcel}" transition="true">
</tc:link>
__________________________________________________________________________________________________
Is there any thing wrong in my jsp page? for some reason its not calling the
getReport() Action after genrating excel Sheet.
Please let me know if any thing wrong with my code.
Thanks for your time.
Thanks,
Vinay
On 4/8/07, Michał 'Gandalf' Stawicki <[EMAIL PROTECTED] > wrote:
> OK,
>
> That function afterLoad - I meant pageIsComplete :)
>
> here's how i have done it:
>
> On the page I have following code:
>
> <tc:panel width="0" height="0">
> <tc:script>
> function doAfterLoadingReportsBrowserTab()
> {
> if (!Tobago.pageIsComplete)
> {
>
setTimeout('doAfterLoadingReportsBrowserTab()',
50);
> }
> else
if(document.getElementById('overview:reportsBrowserTab:storedReport')
> != null)
> {
>
Tobago.submitAction('overview:reportsBrowserTab:storedReport',
false);
> }
> else
> {
> return;
> }
> }
> doAfterLoadingReportsBrowserTab();
>
> <tc:link
> label=""
> id="storedReport"
> transition="false"
>
action="#{reportsBrowserManagedBean.reportsBrowserController.getReport}"
>
rendered="#{reportsBrowserManagedBean.reportsBrowserController.fetchReport}"/>
> </tc:script>
> </tc:panel>
>
> And here is your button:
>
> <tc:link label="#{bundle.catalogExport}"
> actionListener="#{excelExport.exportToExcel}"
> action="#{excelExport.exportToExcel}" transition="false">
>
> You have to change yout excelExport method, so it only creates a file
> and stores it somehow and sets fetchReport to true. You also want to
> set transition to true
>
> So, after clicking your button, the same page reloads, but this time
> the link with id storedReports is rendered. The included javascript
> checks if it exists - and now it does - so it submits the getReport
> action - which sends your file to the browser (as described here:
> http://wiki.apache.org/myfaces/Sending_Files) and sets
fetchReport to
> false for obvious reason.
>
> Perhaps it is not a clean solution, but I didn't come up with anything
better
>
> regards,
> michal
>
>
> On 08/04/07, Vinay Konanki <[EMAIL PROTECTED]> wrote:
> > Hi Michal,
> >
> > Thanks for your reply,
> > i have couple of doubts in the solution you provided.
> > before that let me explain my case.
> >
> > I have a link which will generate the excel export of all the products,
> > According to my current Code my <tc:link> will be like this:
> >
> > <tc:link label="#{ bundle.catalogExport}"
> > actionListener="#{excelExport.exportToExcel}"
> >
> > action="#{excelExport.exportToExcel}" transition="false">
> > NB: for this i'm making transition as false
> >
> > My questions are:
> > 1) How can we set one action for two events i.e generating excel stufff
> > (calling Controller) and setting an element on the page(with Specific
ID).
> > 2) Can you provide a sample code snippet so that it will be helpful for
me
> > to get an idea.
> > 3) I search for afterLoad method in Tobago but i dont find any methods
> > similar to that, Can you provide code for the java Script and how we
will
> > call.
> > Please provide me Sample Code Snippet, that will be greatly helpful for
me.
> >
> > Awaiting your reply.
> >
> > Thanks,
> > Vinay
> >
> >
> >
> > On 4/6/07, Michał 'Gandalf' Stawicki < [EMAIL PROTECTED]> wrote:
> > > You can do as follows:
> > >
> > > use a button with transition - pressing the button would generate your
> > > excel stuff and couse some invisible element to render on the page
> > > (with a specific ID)
> > >
> > > to the page, add a java script using Tobago.afterLoad (perhaps it was
> > > called some different way, check...) that checks if the special
> > > element was rendered and if so, then it submits action that sends
> > > excel stuff to the browser without transition. I have been using this
> > > method to submit PDF reports :)
> > >
> > > regards,
> > > michał
> > >
> > > On 07/04/07, Vinay Konanki < [EMAIL PROTECTED]> wrote:
> > > > Hi,
> > > > Could any one help me in this regard...
> > > > I need to done this module as soon as possible
> > > >
> > > > Any help will be appreciated.
> > > >
> > > > Thanks,
> > > > Vinay
> > > >
> > > >
> > > > On 4/5/07, Vinay Konanki < [EMAIL PROTECTED]> wrote:
> > > > > Hi All,
> > > > > I got success in generating excel sheet, Thanks for your help, but
> > today i
> > > > found a problem with in exporting the excel.
> > > > >
> > > > > Problem was:
> > > > > When i'm trying to export the results to excel as there are more
than
> > 700
> > > > elements to generate, it taking around 5-6 seconds to show window
"which
> > > > contains OpenWith SaveAs Cancel" buttons.
> > > > > In the mean while when i click on other links in the application
its
> > > > getting blocked UI (i.e non editable UI with progress bar image) for
> > > > infinite time.
> > > > >
> > > > > So how can i make the screen as non editable when it generating
Excel
> > > > sheet. i.e. i want to show to the user that some process is going on
and
> > > > make the screen non editable i.e user can not make any actions on
the
> > > > screen.
> > > > >
> > > > > Is there any way to make the screen non editable while other
process
> > is
> > > > going on.
> > > > >
> > > > > Please help me in this regard.
> > > > >
> > > > > Any kind of help will be appreciated. I'm running out of time, as
my
> > > > product release is very soon.
> > > > >
> > > > > Thanks,
> > > > > Vinay
> > > >
> > > >
> > >
> > >
> > > --
> > > [EMAIL PROTECTED]
> > > http://stawicki.jasliska.pl
> > > GG: 3691111
> > > JID: [EMAIL PROTECTED]
> > >
> >
> >
>
>
> --
> [EMAIL PROTECTED]
> http://stawicki.jasliska.pl
> GG: 3691111
> JID: [EMAIL PROTECTED]
>
--
[EMAIL PROTECTED]
http://stawicki.jasliska.pl
JID: [EMAIL PROTECTED]
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