/**
* Constructs a new MultipartRequest to handle the specified request, saving any uploaded files to
* the given directory, and limiting the upload size to the specified length. If the content is
* too large, an IOException is thrown. This constructor actually parses the
* <tt>multipart/form-data</tt> and throws an IOException if there's any problem reading or
* parsing the request.
*
* <p>To avoid file collisions, this constructor takes an implementation of the FileRenamePolicy
* interface to allow a pluggable rename policy.
*
* @param request the servlet request.
* @param saveDirectory the directory in which to save any uploaded files.
* @param maxPostSize the maximum size of the POST content.
* @param encoding the encoding of the response, such as ISO-8859-1
* @param policy a pluggable file rename policy
* @exception IOException if the uploaded content is larger than <tt>maxPostSize</tt> or there's a
* problem reading or parsing the request.
*/
public CosMultipartRequest(
HttpServletRequest request,
String saveDirectory,
int maxPostSize,
String encoding,
FileRenamePolicy policy)
throws IOException {
// Sanity check values
if (request == null) throw new IllegalArgumentException("request cannot be null");
if (saveDirectory == null) throw new IllegalArgumentException("saveDirectory cannot be null");
if (maxPostSize <= 0) {
throw new IllegalArgumentException("maxPostSize must be positive");
}
// Save the dir
File dir = new File(saveDirectory);
// Check saveDirectory is truly a directory
if (!dir.isDirectory()) throw new IllegalArgumentException("Not a directory: " + saveDirectory);
// Check saveDirectory is writable
if (!dir.canWrite()) throw new IllegalArgumentException("Not writable: " + saveDirectory);
// Parse the incoming multipart, storing files in the dir provided,
// and populate the meta objects which describe what we found
MultipartParser parser = new MultipartParser(request, maxPostSize, true, true, encoding);
// Some people like to fetch query string parameters from
// MultipartRequest, so here we make that possible. Thanks to
// Ben Johnson, [email protected], for the idea.
if (request.getQueryString() != null) {
// Let HttpUtils create a name->String[] structure
Map<String, String[]> queryParameters =
RequestUtils.parseQueryString(request.getQueryString());
// For our own use, name it a name->Vector structure
for (Entry<String, String[]> entry : queryParameters.entrySet()) {
parameters.put(entry.getKey(), Arrays.asList(entry.getValue()));
}
}
Part part;
while ((part = parser.readNextPart()) != null) {
String name = part.getName();
if (name == null) {
throw new IOException("Malformed input: parameter name missing (known Opera 7 bug)");
}
if (part.isParam()) {
// It's a parameter part, add it to the vector of values
ParamPart paramPart = (ParamPart) part;
String value = paramPart.getStringValue();
List<String> existingValues = parameters.get(name);
if (existingValues == null) {
existingValues = new ArrayList<String>();
parameters.put(name, existingValues);
}
existingValues.add(value);
} else if (part.isFile()) {
// It's a file part
FilePart filePart = (FilePart) part;
String fileName = filePart.getFileName();
if (fileName != null) {
filePart.setRenamePolicy(policy); // null policy is OK
// The part actually contained a file
filePart.writeTo(dir);
files.put(
name,
new UploadedFile(
dir.toString(), filePart.getFileName(), fileName, filePart.getContentType()));
} else {
// The field did not contain a file
files.put(name, new UploadedFile(null, null, null, null));
}
}
}
}
/**
* Displays the Create Discussion page for a HTTP Get, or creates a Discussion Thread for a HTTP
* Post
*
* <p>- Requires a cookie for the session user - Requires a groupId request parameter for a GET -
* Requires a groupId and threadName request parameter for a POST - Requires a document request
* part for a POST
*
* @param req The HTTP Request
* @param res The HTTP Response
*/
public void createDiscussionAction(HttpServletRequest req, HttpServletResponse res) {
// Ensure there is a cookie for the session user
if (AccountController.redirectIfNoCookie(req, res)) return;
Map<String, Object> viewData = new HashMap<>();
if (req.getMethod() == HttpMethod.Get) {
viewData.put("title", "Create Discussion");
viewData.put("groupId", req.getParameter("groupId"));
view(req, res, "/views/group/CreateDiscussion.jsp", viewData);
return;
} else if (req.getMethod() == HttpMethod.Post) {
// save discussion
GroupManager groupMan = new GroupManager();
DiscussionThread thread = new DiscussionThread();
int groupId = Integer.parseInt(req.getParameter("groupId"));
thread.setGroupId(groupId);
thread.setGroup(groupMan.get(groupId));
thread.setThreadName(req.getParameter("threadName"));
DiscussionManager dm = new DiscussionManager();
dm.createDiscussion(thread);
try {
Part documentPart = req.getPart("document");
// if we have a document to upload
if (documentPart.getSize() > 0) {
String uuid = DocumentController.saveDocument(this.getServletContext(), documentPart);
Document doc = new Document();
doc.setDocumentName(getFileName(documentPart));
doc.setDocumentPath(uuid);
doc.setVersionNumber(1);
doc.setThreadId(thread.getId());
doc.setGroupId(thread.getGroupId());
DocumentManager docMan = new DocumentManager();
docMan.createDocument(doc);
// Get uploading User
HttpSession session = req.getSession();
Session userSession = (Session) session.getAttribute("userSession");
User uploader = userSession.getUser();
// Create a notification to all in the group
NotificationManager notificationMan = new NotificationManager();
groupMan = new GroupManager();
List<User> groupUsers = groupMan.getGroupUsers(groupId);
for (User u : groupUsers) {
Notification notification =
new Notification(
u.getId(),
u,
groupId,
null,
"User " + uploader.getFullName() + " has uploaded a document",
"/document/document?documentId=" + doc.getId());
notificationMan.createNotification(notification);
}
}
} catch (Exception e) {
logger.log(Level.SEVERE, "Document save error", e);
}
redirectToLocal(req, res, "/group/discussion/?threadId=" + thread.getId());
return;
}
httpNotFound(req, res);
}