/**
* Call this method as the first action in your servlet, to ensure that the files are technically
* handled, before your business logic takes places. This method should only be invoked for POST
* calls.
*
* @param aRequestScope Current request scope
* @throws FileUploadException
*/
public static void handleUpload(@Nonnull final IRequestWebScopeWithoutResponse aRequestScope)
throws FileUploadException {
s_aLogger.info("handleUpload");
// get the upload ID that was sent via a hidden field from the upload frame
final String sUploadID = aRequestScope.getAttributeAsString(PARAM_UPLOAD_ID);
if (StringHelper.hasNoText(sUploadID)) {
FileUploadProgressListener.getInstance().reset();
throw new FileUploadException("Unable to retrieve upload ID for received request!");
}
// Check if we have the matching upload context
final UploadContext aContext = UploadContextRegistry.getInstance().getContext(sUploadID);
if (aContext == null) {
FileUploadProgressListener.getInstance().reset();
throw new FileUploadException(
"Unable to retrieve upload context for received request with ID '" + sUploadID + "'!");
}
// Ensure that the upload directory exists
final File aUploadDir = aContext.getUploadDirectory();
if (!aUploadDir.exists()) {
final FileIOError aErr = FileOperations.createDirRecursive(aUploadDir);
if (aErr.isFailure()) {
FileUploadProgressListener.getInstance().reset();
throw new FileUploadException(
"Failed to create upload directory "
+ aUploadDir
+ ": "
+ aErr.toString()); // $NON-NLS-2$
}
}
for (final IFileItem aFileItem : aRequestScope.getAllUploadedFileItemValues()) {
final File aUploadedFile = _handleUploadFileItem(aFileItem, aContext);
if (aUploadedFile != null) {
FileUploadProgressListener.getInstance()
.setFileName(FilenameHelper.getRelativeToParentDirectory(aUploadedFile, aUploadDir));
}
}
FileUploadProgressListener.getInstance().setUploadFinished();
}