Re: wicket File downlaod
opps, sorry what i meant to write was: File pdfFile = new File(test.pdf); But this doesn't really change much and the problem still remains that the file is empty (whether txt or pdf). mbelarbi wrote: Hi, I have some code that generates a pdf report file (using jasper reports). This file is stored somewhere in the project. What I need to do is be able to provide a link which makes that file available for download when clicked (downloadLink?). How do i do this using wicket? and are there any examples. I've tried this: File pdfFile = new File(test.txt); DownloadLink dLink = new DownloadLink(dLink, pdfFile); This does exactly what i am looking for (bring up a file for download), but this file is empty, it has no content. This pdf file resides in the same hierarchy as the source code file. -- View this message in context: http://www.nabble.com/wicket-File-downlaod-tf4874269.html#a13946991 Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: wicket File downlaod
The file really ought to reside in another location, but anyway... I think new File(test.pdf) would actually indicate a file named test.pdf, at the current working directory of the application server. Output the file's path with getCanoicalPath/getAbsolutePath (or something along that line) to verify that the path of the pdf is correct first. On 26 Nov 2007, at 6:07 PM, mbelarbi wrote: opps, sorry what i meant to write was: File pdfFile = new File(test.pdf); But this doesn't really change much and the problem still remains that the file is empty (whether txt or pdf). mbelarbi wrote: Hi, I have some code that generates a pdf report file (using jasper reports). This file is stored somewhere in the project. What I need to do is be able to provide a link which makes that file available for download when clicked (downloadLink?). How do i do this using wicket? and are there any examples. I've tried this: File pdfFile = new File(test.txt); DownloadLink dLink = new DownloadLink(dLink, pdfFile); This does exactly what i am looking for (bring up a file for download), but this file is empty, it has no content. This pdf file resides in the same hierarchy as the source code file. -- View this message in context: http://www.nabble.com/wicket-File- downlaod-tf4874269.html#a13946991 Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: wicket File downlaod
Sometime ago this was answered on the list but i cannot find it right
now :-)
Maybe the following snippets will help you (it's wicket 1.2.6):
WebResource export = new WebResource() {
private static final long serialVersionUID = 1L;
@Override
public IResourceStream getResourceStream() {
try {
return new FileService(f).getResourceStream();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void setHeaders(WebResponse response) {
super.setHeaders(response);
response.
setAttachmentHeader(attachment.getOriginalFilename());
}
};
export.setCacheable(false);
ResourceLink dlLink = new ResourceLink(attachmentLink, export);
...
public class FileService {
private File file;
private String outputName;
private String contentType = ;
public FileService(File file) {
this.file = file;
this.outputName = this.file.getName();
}
/**
* sets the output name and returns itself
* @param outputName
* @return
*/
public FileService setOutputName(String outputName) {
this.outputName = outputName;
return FileService.this;
}
/**
* sets the content type and returns itself
* @param contentType
* @return
*/
public FileService setContentType(String contentType) {
this.contentType = contentType;
return FileService.this;
}
public IResourceStream getResourceStream() throws IOException {
FileInputStream fi = new FileInputStream(this.file);
return new IResourceStreamImpl(fi, this.contentType,
this.file.length());
}
/**
* wrapper which creates the necessary [EMAIL PROTECTED]
ResourceStreamRequestTarget}
* @return
* @throws IOException
*/
public ResourceStreamRequestTarget getResourceStreamRequestTarget()
throws IOException {
return new
ResourceStreamRequestTarget(this.getResourceStream()) {
public String getFileName() {
return (outputName);
}
};
}
}
...
public class IResourceStreamImpl implements IResourceStream {
private static final long serialVersionUID = 1L;
private Locale locale = null;
private String contentType = null;
private InputStream inputStream = null;
private long size;
/**
* @param fileInputStream
* @param contentType
* @param file
*/
public IResourceStreamImpl(InputStream inputStream,
String contentType, long size) {
this.inputStream = inputStream;
this.size = size;
this.contentType = contentType;
}
public void close() throws IOException {
this.inputStream.close();
}
public InputStream getInputStream() throws
ResourceStreamNotFoundException {
return this.inputStream;
}
public String getContentType() {
return (this.contentType);
}
public Locale getLocale() {
return (this.locale);
}
public long length() {
return this.size;
}
public void setLocale(Locale locale) {
this.locale = locale;
}
public Time lastModifiedTime() {
return null;
}
}
mbelarbi schrieb:
opps, sorry what i meant to write was:
File pdfFile = new File(test.pdf);
But this doesn't really change much and the problem still remains that the
file is empty (whether txt or pdf).
mbelarbi wrote:
Hi,
I have some code that generates a pdf report file (using jasper reports).
This file is stored somewhere in the project.
What I need to do is be able to provide a link which makes that file
available for download when clicked (downloadLink?). How do i do this
using wicket? and are there any examples.
I've tried this:
File pdfFile = new File(test.txt);
DownloadLink dLink = new DownloadLink(dLink, pdfFile);
This does exactly what i am looking for (bring up a file for download),
but this file is empty, it has no content. This pdf file resides in the
same hierarchy as the source code file.
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: wicket File downlaod
thanks Kent lai, a system print for the file's getCanoicalPath seemed to show that the file path i was passing in was incorrect. Now it's resolved. Thanks kent lai wrote: The file really ought to reside in another location, but anyway... I think new File(test.pdf) would actually indicate a file named test.pdf, at the current working directory of the application server. Output the file's path with getCanoicalPath/getAbsolutePath (or something along that line) to verify that the path of the pdf is correct first. On 26 Nov 2007, at 6:07 PM, mbelarbi wrote: opps, sorry what i meant to write was: File pdfFile = new File(test.pdf); But this doesn't really change much and the problem still remains that the file is empty (whether txt or pdf). mbelarbi wrote: Hi, I have some code that generates a pdf report file (using jasper reports). This file is stored somewhere in the project. What I need to do is be able to provide a link which makes that file available for download when clicked (downloadLink?). How do i do this using wicket? and are there any examples. I've tried this: File pdfFile = new File(test.txt); DownloadLink dLink = new DownloadLink(dLink, pdfFile); This does exactly what i am looking for (bring up a file for download), but this file is empty, it has no content. This pdf file resides in the same hierarchy as the source code file. -- View this message in context: http://www.nabble.com/wicket-File- downlaod-tf4874269.html#a13946991 Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- View this message in context: http://www.nabble.com/wicket-File-downlaod-tf4874269.html#a13947358 Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: wicket File downlaod
Hi,
I have never used jasper reports, but a quick search shows me that you can
also generate the file as a byte[] in memory:
http://jasperreports.sourceforge.net/api/net/sf/jasperreports/engine/JasperExportManager.html#exportReportToPdf(net.sf.jasperreports.engine.JasperPrint)
Class JasperExportManager:
public static byte[] exportReportToPdf(JasperPrint jasperPrint) throws
JRException
In such case you could avoid all the trouble with files by using a
DynamicWebResource instead of the WebResource described by Florian.
Here a quick example:
public class MyDynamicWebResource extends DynamicWebResource {
protected ResourceState getResourceState() {
return new ResourceState() {
public String getContentType() {
return application/pdf;
}
public byte[] getData() {
return generatePDFDataUsingJasperOrWhatever();
}
};
}
// this is optional i think
protected void setHeaders(WebResponse cResponse) {
super.setHeaders(cResponse);
cResponse.setAttachmentHeader(test.pdf);
}
}
For me this is the most convenient thing to do if you don't need to store
the files for later usage.
Bye,
German
It seems that Florian Sperber wrote:
Sometime ago this was answered on the list but i cannot find it right
now :-)
Maybe the following snippets will help you (it's wicket 1.2.6):
WebResource export = new WebResource() {
private static final long serialVersionUID = 1L;
@Override
public IResourceStream getResourceStream() {
try {
return new FileService(f).getResourceStream();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void setHeaders(WebResponse response) {
super.setHeaders(response);
response.
setAttachmentHeader(attachment.getOriginalFilename());
}
};
export.setCacheable(false);
ResourceLink dlLink = new ResourceLink(attachmentLink, export);
...
public class FileService {
private File file;
private String outputName;
private String contentType = ;
public FileService(File file) {
this.file = file;
this.outputName = this.file.getName();
}
/**
* sets the output name and returns itself
* @param outputName
* @return
*/
public FileService setOutputName(String outputName) {
this.outputName = outputName;
return FileService.this;
}
/**
* sets the content type and returns itself
* @param contentType
* @return
*/
public FileService setContentType(String contentType) {
this.contentType = contentType;
return FileService.this;
}
public IResourceStream getResourceStream() throws IOException {
FileInputStream fi = new FileInputStream(this.file);
return new IResourceStreamImpl(fi, this.contentType,
this.file.length());
}
/**
* wrapper which creates the necessary [EMAIL PROTECTED]
ResourceStreamRequestTarget}
* @return
* @throws IOException
*/
public ResourceStreamRequestTarget getResourceStreamRequestTarget()
throws IOException {
return new
ResourceStreamRequestTarget(this.getResourceStream()) {
public String getFileName() {
return (outputName);
}
};
}
}
...
public class IResourceStreamImpl implements IResourceStream {
private static final long serialVersionUID = 1L;
private Locale locale = null;
private String contentType = null;
private InputStream inputStream = null;
private long size;
/**
* @param fileInputStream
* @param contentType
* @param file
*/
public IResourceStreamImpl(InputStream inputStream,
String contentType, long size) {
this.inputStream = inputStream;
this.size = size;
this.contentType = contentType;
}
public void close() throws IOException {
this.inputStream.close();
}
public InputStream getInputStream() throws
ResourceStreamNotFoundException {
return this.inputStream;
}
public String getContentType() {
return (this.contentType);
}
public Locale getLocale() {
return (this.locale);
}
public long length() {
return this.size;
}
public void setLocale(Locale locale) {
this.locale = locale;
}
public Time lastModifiedTime() {
return
Re: wicket File downlaod
Yes I agree, I will later move to providing these reports as streams on the
fly instead of storing them, since there will be many many files generated
so storage could be a problem in the long run.
German Morales-2 wrote:
Hi,
I have never used jasper reports, but a quick search shows me that you can
also generate the file as a byte[] in memory:
http://jasperreports.sourceforge.net/api/net/sf/jasperreports/engine/JasperExportManager.html#exportReportToPdf(net.sf.jasperreports.engine.JasperPrint)
Class JasperExportManager:
public static byte[] exportReportToPdf(JasperPrint jasperPrint) throws
JRException
In such case you could avoid all the trouble with files by using a
DynamicWebResource instead of the WebResource described by Florian.
Here a quick example:
public class MyDynamicWebResource extends DynamicWebResource {
protected ResourceState getResourceState() {
return new ResourceState() {
public String getContentType() {
return application/pdf;
}
public byte[] getData() {
return generatePDFDataUsingJasperOrWhatever();
}
};
}
// this is optional i think
protected void setHeaders(WebResponse cResponse) {
super.setHeaders(cResponse);
cResponse.setAttachmentHeader(test.pdf);
}
}
For me this is the most convenient thing to do if you don't need to store
the files for later usage.
Bye,
German
It seems that Florian Sperber wrote:
Sometime ago this was answered on the list but i cannot find it right
now :-)
Maybe the following snippets will help you (it's wicket 1.2.6):
WebResource export = new WebResource() {
private static final long serialVersionUID = 1L;
@Override
public IResourceStream getResourceStream() {
try {
return new FileService(f).getResourceStream();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void setHeaders(WebResponse response) {
super.setHeaders(response);
response.
setAttachmentHeader(attachment.getOriginalFilename());
}
};
export.setCacheable(false);
ResourceLink dlLink = new ResourceLink(attachmentLink, export);
...
public class FileService {
private File file;
private String outputName;
private String contentType = ;
public FileService(File file) {
this.file = file;
this.outputName = this.file.getName();
}
/**
* sets the output name and returns itself
* @param outputName
* @return
*/
public FileService setOutputName(String outputName) {
this.outputName = outputName;
return FileService.this;
}
/**
* sets the content type and returns itself
* @param contentType
* @return
*/
public FileService setContentType(String contentType) {
this.contentType = contentType;
return FileService.this;
}
public IResourceStream getResourceStream() throws IOException {
FileInputStream fi = new FileInputStream(this.file);
return new IResourceStreamImpl(fi, this.contentType,
this.file.length());
}
/**
* wrapper which creates the necessary [EMAIL PROTECTED]
ResourceStreamRequestTarget}
* @return
* @throws IOException
*/
public ResourceStreamRequestTarget getResourceStreamRequestTarget()
throws IOException {
return new
ResourceStreamRequestTarget(this.getResourceStream()) {
public String getFileName() {
return (outputName);
}
};
}
}
...
public class IResourceStreamImpl implements IResourceStream {
private static final long serialVersionUID = 1L;
private Locale locale = null;
private String contentType = null;
private InputStream inputStream = null;
private long size;
/**
* @param fileInputStream
* @param contentType
* @param file
*/
public IResourceStreamImpl(InputStream inputStream,
String contentType, long size) {
this.inputStream = inputStream;
this.size = size;
this.contentType = contentType;
}
public void close() throws IOException {
this.inputStream.close();
}
public InputStream getInputStream() throws
ResourceStreamNotFoundException {
return this.inputStream;
}
public String getContentType() {
return (this.contentType);
}
public Locale getLocale() {
return (this.locale);
}
public long length() {
