Hello there,
Hopefully someone can help - I have looked through the existing queries and
can't just find what I'm after. I have posted this to users but to no avail,
please could somebody confirm if this is a bug in the software or if I'm
doing something incorrectly?
I have a main record with asociated files - the files are uploaded through
my web app and are downloaded from the same page that lists the files in a
dataTable. I have a series of commandLinks that display the file names - a
user selects the file and it downloads.
The problem I have is that when a user downloads a file then immediately
trys to upload another, they are prompted to download the file that they
have already previously downloaded. If however I replace the commandLinks
for commandButtons the application behaves correctly.
I have seen an associated link that mentions similar behaviour
(http://blogs.sun.com/tor/entry/creating_downloadable_files), however I do
not want to use the command buttons in this manner, and I use an
actionListener rather than an action so I may retrieve information from the
list of dynamically created files. I am not receiving any errors, just the
strange behaviour with commandLinks.
My code is as follows:
public void downloadFile(ActionEvent ev) {
UIData fileList = findParentHtmlDataTable(ev.getComponent());
AssociatedFile associatedFile = (AssociatedFile)
fileList.getRowData();
String downloadPath = download path retrieved here...;
try {
byte[] fileData = InternalUtil.readFile(downloadPath);
HttpServletResponse response =
(HttpServletResponse)
getFacesContext().getExternalContext().getResponse();
response.setHeader(Content-disposition, attachment;
filename=\ +
associatedFile.getName() +
\);
response.setContentLength(fileData.length);
response.setContentType(associatedFile.getContentType());
ServletOutputStream out = response.getOutputStream();
out.write(fileData);
getFacesContext().getApplication().getStateManager().saveSerializedView(getFacesContext());
getFacesContext().responseComplete();
} catch (FileSystemException e) {
getFacesContext().addMessage(null, new FacesMessage(Error
downloading file: +
e.getMessage()));
} catch (IOException e) {
getFacesContext().addMessage(null, new FacesMessage(Error
downloading file: +
e.getMessage()));
}
}
Any help would be greatly appreciated!
Thanks in anticipation, Carl
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