File upload with ServletFileUpload's parseRequest? [duplicate]

Answer 1

If you are using weblogic 12 then check whether the patch_wls1211 is insatlled or not. I was having the same issue and it resolved after applying patch_wls1211.

Answer 2

How big are the files you are uploading? You might be over the default threshold. I think the default is 10K

factory.setSizeThreshold(maxSizeYouWantToHandle);

Answer 3

You should check for multipart content

boolean isMultipart = ServletFileUpload.isMultipartContent(request);

if (isMultipart) {
    FileItemFactory factory = new DiskFileItemFactory();
    ServletFileUpload upload = new ServletFileUpload(factory);

    try {
        List items = upload.parseRequest(request);
        Iterator iterator = items.iterator();
        while (iterator.hasNext()) {
            FileItem item = (FileItem) iterator.next();
            if (!item.isFormField()) {
                String fileName = item.getName();

                String root = getServletContext().getRealPath("/");
                File path = new File(root + "/fileuploads");
                if (!path.exists()) {
                    boolean status = path.mkdirs();
                }

                File uploadedFile = new File(path + "/" + fileName);
                item.write(uploadedFile);
            }
        }
    } catch (Exception e) {

Answer 4

As I said in a comment to the same question, you posted earlier, this is most likely because you have parsed the request already before. The files are part of the request body and you can parse it only one time.

Update:

I usually do use commons-upload in that way:

if (ServletFileUpload.isMultipartContent(request)) {
    ServletFileUpload fileUpload = new ServletFileUpload();
    FileItemIterator items = fileUpload.getItemIterator(request);
    // iterate items
    while (items.hasNext()) {
        FileItemStream item = items.next();
        if (!item.isFormField()) {
            is = item.openStream();
        }
    }
}