Re: Have any DynamicByteArrayResource sample?
well, I have some idea:
ByteArrayOutputStream baos = new ByteArrayOutputStream();
.
.
.
add(new Link(download) {
public void onClick() {
WebResponse response = (WebResponse) getResponse();
response.setHeader(Content-Disposition,
attachment;filename= + aaa.xls);
response.setContentType(application/x-msdownload);
response.getOutputStream().write(baos.toByteArray());
baos.flush();
baos.close();
}});
It's work! very easy, like a Servlet, but above codes need some
try-catch-finally block.
Nino.Martinez wrote:
take a look at DynamicImageResource.. It should give some hints.
rosen jiang wrote:
Hi all,
I want use DynamicByteArrayResource class download Excel(ByteArray
Resource
not File) from jexcelapi.
Does DynamicByteArrayResource class fit for me?
thx!
best regards,
osen jiang
--
-Wicket for love
Nino Martinez Wael
Java Specialist @ Jayway DK
http://www.jayway.dk
+45 2936 7684
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Re: Have any DynamicByteArrayResource sample?
true, this is how id did once too:)
rosen jiang wrote:
well, I have some idea:
ByteArrayOutputStream baos = new ByteArrayOutputStream();
.
.
.
add(new Link(download) {
public void onClick() {
WebResponse response = (WebResponse) getResponse();
response.setHeader(Content-Disposition,
attachment;filename= + aaa.xls);
response.setContentType(application/x-msdownload);
response.getOutputStream().write(baos.toByteArray());
baos.flush();
baos.close();
}});
It's work! very easy, like a Servlet, but above codes need some
try-catch-finally block.
Nino.Martinez wrote:
take a look at DynamicImageResource.. It should give some hints.
rosen jiang wrote:
Hi all,
I want use DynamicByteArrayResource class download Excel(ByteArray
Resource
not File) from jexcelapi.
Does DynamicByteArrayResource class fit for me?
thx!
best regards,
osen jiang
--
-Wicket for love
Nino Martinez Wael
Java Specialist @ Jayway DK
http://www.jayway.dk
+45 2936 7684
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
--
-Wicket for love
Nino Martinez Wael
Java Specialist @ Jayway DK
http://www.jayway.dk
+45 2936 7684
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: Have any DynamicByteArrayResource sample?
On Mon, Apr 07, 2008 at 07:32:48AM -0700, rosen jiang wrote:
well, I have some idea:
ByteArrayOutputStream baos = new ByteArrayOutputStream();
.
.
.
add(new Link(download) {
public void onClick() {
WebResponse response = (WebResponse) getResponse();
response.setHeader(Content-Disposition,
attachment;filename= + aaa.xls);
response.setContentType(application/x-msdownload);
response.getOutputStream().write(baos.toByteArray());
baos.flush();
baos.close();
}});
It's work! very easy, like a Servlet, but above codes need some
try-catch-finally block.
Hi Rosen,
The problem with your code is that your BAOS is serialized with your
page, which means that your entire report is using up space in your
session, even if the user never clicks the link.
Here's some code from my application that uses Wicket's
AbstractResourceStreamWriter, which was mentioned on this list a few
days ago:
@Override
public void onClick() {
final ReportGenerator generator = getReportGenerator();
IResourceStream resourceStream = new
AbstractResourceStreamWriter() {
public void write(OutputStream output) {
try {
generator.generate(output, columns, dataProvider);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
public String getContentType() {
return generator.getContentType();
}
};
getRequestCycle().setRequestTarget(new
ResourceStreamRequestTarget(resourceStream).setFileName(getFileName()));
}
ReportGenerator is my own abstraction for generating the report. Note
that the bytes are generated only when the link is clicked, and they are
streamed directly to the client without being stored in an intermediate
byte array.
Hope this helps.
jk
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Re: Have any DynamicByteArrayResource sample?
take a look at DynamicImageResource.. It should give some hints. rosen jiang wrote: Hi all, I want use DynamicByteArrayResource class download Excel(ByteArray Resource not File) from jexcelapi. Does DynamicByteArrayResource class fit for me? thx! best regards, osen jiang -- -Wicket for love Nino Martinez Wael Java Specialist @ Jayway DK http://www.jayway.dk +45 2936 7684 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Have any DynamicByteArrayResource sample?
Hi all, I want use DynamicByteArrayResource class download Excel(ByteArray Resource not File) from jexcelapi. Does DynamicByteArrayResource class fit for me? thx! best regards, osen jiang -- View this message in context: http://www.nabble.com/Have-any-DynamicByteArrayResource-sample--tp16525712p16525712.html Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
