/** {@inheritDoc} */
public String render(XWikiContext context) throws XWikiException {
XWikiRequest request = context.getRequest();
XWikiResponse response = context.getResponse();
String uri = request.getRequestURI();
// Locate the temporary file.
File tempFile = getTemporaryFile(uri, context);
if (null == tempFile) {
throw new XWikiException(
XWikiException.MODULE_XWIKI_APP,
XWikiException.ERROR_XWIKI_APP_URL_EXCEPTION,
"Invalid temporary resource URL");
}
// Write temporary file into response.
response.setDateHeader("Last-Modified", tempFile.lastModified());
String contentType = MimeTypes.OCTET_STREAM;
try {
contentType = tika.detect(tempFile);
} catch (IOException ex) {
LOG.warn(
String.format(
"Unable to determine mime type for temporary resource [%s]",
tempFile.getAbsolutePath()),
ex);
}
response.setContentType(contentType);
try {
response.setContentLength((int) tempFile.length());
IOUtils.copy(FileUtils.openInputStream(tempFile), response.getOutputStream());
} catch (IOException e) {
throw new XWikiException(
XWikiException.MODULE_XWIKI_APP,
XWikiException.ERROR_XWIKI_APP_SEND_RESPONSE_EXCEPTION,
"Exception while sending response",
e);
}
return null;
}
@Override
public String render(XWikiContext context) throws XWikiException {
XWikiRequest request = context.getRequest();
XWikiResponse response = context.getResponse();
XWikiDocument doc = context.getDoc();
String path = request.getRequestURI();
String filename = Util.decodeURI(getFileName(path, ACTION_NAME), context);
XWikiAttachment attachment = null;
final String idStr = request.getParameter("id");
if (StringUtils.isNumeric(idStr)) {
int id = Integer.parseInt(idStr);
if (doc.getAttachmentList().size() > id) {
attachment = doc.getAttachmentList().get(id);
}
} else {
attachment = doc.getAttachment(filename);
}
if (attachment == null) {
Object[] args = {filename};
throw new XWikiException(
XWikiException.MODULE_XWIKI_APP,
XWikiException.ERROR_XWIKI_APP_ATTACHMENT_NOT_FOUND,
"Attachment {0} not found",
null,
args);
}
XWikiPluginManager plugins = context.getWiki().getPluginManager();
attachment = plugins.downloadAttachment(attachment, context);
// Try to load the attachment content just to make sure that the attachment really exists
// This will throw an exception if the attachment content isn't available
try {
attachment.getContentSize(context);
} catch (XWikiException e) {
Object[] args = {filename};
throw new XWikiException(
XWikiException.MODULE_XWIKI_APP,
XWikiException.ERROR_XWIKI_APP_ATTACHMENT_NOT_FOUND,
"Attachment content {0} not found",
null,
args);
}
long lastModifiedOnClient = request.getDateHeader("If-Modified-Since");
long lastModifiedOnServer = attachment.getDate().getTime();
if (lastModifiedOnClient != -1 && lastModifiedOnClient >= lastModifiedOnServer) {
response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
return null;
}
// Sending the content of the attachment
if (request.getHeader(RANGE_HEADER_NAME) != null) {
try {
if (sendPartialContent(attachment, request, response, context)) {
return null;
}
} catch (IOException ex) {
// Broken response...
}
}
sendContent(attachment, request, response, filename, context);
return null;
}