Thanks for the response! It seems to be working well. I am posting what I
ended up with. Please let me know if you see anything that is a really bad
idea.
@Override
public void onSubmit(){
validateCriteria();
if(!hasErrorMessage()){
MyReportFactory pdfRef = new MyReportFactory();
final ByteArrayOutputStream pdfout = pdfRef.createPDF(startDt,
endDt,
reportType);
final Response response = getRequestCycle().getResponse();
response.setContentType("application/pdf");
response.setContentLength(pdfout.size());
getRequestCycle().setRequestTarget(new IRequestTarget(){
@Override
public void detach(RequestCycle requestCycle) {
// No need to do anything here as I already
closed the stream...I think
}
@Override
public void respond(RequestCycle requestCycle) {
try{
OutputStream stream =
response.getOutputStream();
stream.write(pdfout.toByteArray());
stream.flush();
pdfout.close();
}catch(IOException ex){
throw new RuntimeException(ex);
}
}
});
}
}
Pills wrote:
>
> Have a look at RequestCycle#setRequestTarget.
>
> Additionnaly, you may have a look at SubmitLink, since the validation
> step has nothing to do in the onClick of a link
>
> jeredm wrote:
>> I am using FOP to create a PDF dynamically based on user input into a web
>> form. I don't have a problem creating the PDF only with the display of
>> it.
>> I need that PDF to be immediately sent to the user via a redirect or
>> download. so something like this ....
>>
>> @Override
>> public void onClick(){
>> validateUserDataFromForm();
>>
>> if(!hasErrorMessage()){
>> ByteArrayOutputStream pdfData =
>> factory.createPDF(startDateThatIsSetViaTheForm,
>> endDateThatIsSetViaTheForm,
>> reportType);
>>
>> // Output the steam to a page I can redirect to.
>> // I can use a File if ByteArrayOutputStream is making things tough.
>> // I am fine if the user gets prompted like a download link, but I
>> want
>> a single click to create and prompt for download.
>> }
>> }
>>
>>
>> .... Here is what I have tried.
>> 1) Making the PDF a resource: This worked initially as I needed it to,
>> but
>> I was having problems with the resource being reused and while the report
>> needed to vary on each generation. Basically, I need to create the PDF,
>> give it to the user, and then destroy the copy on the server. Every time
>> the user clicks the create button a new PDF needs to be built and sent to
>> the user. I also don't like this option as I don't want to waste memory
>> by
>> adding too many resources that are not re-used. I need the user data to
>> update the display of the PDF when it is built, so I need the link to
>> pass
>> in new values to the createPDF function every time.
>>
>> 2) Something like this...
>> final Response response = getRequestCycle().getResponse();
>> response.setContentType("application/pdf");
>> response.setContentLength(pdfout.size());
>>
>> try{
>> OutputStream stream = response.getOutputStream();
>> stream.write(pdfData.toByteArray());
>> stream.flush();
>> }catch(Exception ex){
>> throw new RuntimeException(ex);
>> }
>>
>> That results in an error like so...
>> [org.apache.wicket.protocol.http.WicketFilter] - closing the buffer
>> error...
>>
>> Any help would be appreciated! Thanks!
>>
>> Jered
>>
>>
>
>
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