I'm not having any problem with 20mb files using Struts 2.1.6 and the
standard fileUpload interceptor.
>From what I see, Sir Evans is warning you that loading the entire file into
memory may be a problem if your files are very large. Nowadays 10mb is not
really that large. If you want to put 10mb pictures into a database as a
byte array then you really don't have much choice but to load them into
memory.
Now if you were actually talking about really HUGH files like hundreds of mb
or multiple gb files (just like Evans said) that is larger then your memory
then you will need take a different approach such as splitting the file or
not putting it into the database, instead just store a reference to the
file.
Have you tried this solution? Have you confirmed you actually have a
problem?
On Thu, Jun 4, 2009 at 9:58 AM, Johnson nickel <sarava...@elogic.co.in>wrote:
>
>
>
> Hi Evans,
>
> I'm facing problem to upload huge file like (size is
> 7mb,10mb). In your last thread
> you have specified it will work in only small datas or files. I want to
> know
> any other method
> to solve in struts2 framework.
>
>
> Disclaimer: This approach is limited to small files (multiple megabytes
> > rather than hundreds/gigs) because of the inefficient memory
> > consumption. It's also quite slow as the commons fileuploader first
> > receives all the data, then writes the entire temporary file, then it's
> > read again entirely into memory, then written back to your
> > database/filesystem. There's no other built-in approach in Struts2 but
> > you'll find ajax fileuploaders on the web that handle massive files
> > better than this.
>
> Jeromy Evans - Blue Sky Minds wrote:
> >
> >
> >
> > Johnson nickel wrote:
> >> Hi Jeromy Evans,
> >>
> >> Thanks for your reply. I would like to insert the images
> >> into
> >> my
> >> Databases. For that, i'm using byte[] array.
> >> In Struts 1.3,
> >> I used FormFile class. From this class i got the method
> >> getFileData();
> >>
> >> In my db, ps.setBytes(1,filedata); // to store the
> binary
> >> datas in DB.
> >>
> >> /*FormFile mtfile = form.getTheFile();
> >> byte[] filedata = mtfile.getFileData();*/
> >>
> >>
> >>
> > Ahh, ok.
> >
> > In Struts2, the file is a reference to a temporary file created on your
> > server. If it's not HUGE, just read it into a byte array.
> > The code follows. This code is a fairly standard approach to read an
> > arbitrary length inputstream into a byte array one chunk at a time.
> > If the file can be HUGE, see my comment at bottom.
> >
> > byte[] filedata = readInputStream(new FileInputStream(upload));
> >
> > /** Read an input stream in its entirety into a byte array */
> > public static byte[] readInputStream(InputStream inputStream) throws
> > IOException {
> > int bufSize = 1024 * 1024;
> > byte[] content;
> >
> > List<byte[]> parts = new LinkedList();
> > InputStream in = new BufferedInputStream(inputStream);
> >
> > byte[] readBuffer = new byte[bufSize];
> > byte[] part = null;
> > int bytesRead = 0;
> >
> > // read everyting into a list of byte arrays
> > while ((bytesRead = in.read(readBuffer, 0, bufSize)) != -1) {
> > part = new byte[bytesRead];
> > System.arraycopy(readBuffer, 0, part, 0, bytesRead);
> > parts.add(part);
> > }
> >
> > // calculate the total size
> > int totalSize = 0;
> > for (byte[] partBuffer : parts) {
> > totalSize += partBuffer.length;
> > }
> >
> > // allocate the array
> > content = new byte[totalSize];
> > int offset = 0;
> > for (byte[] partBuffer : parts) {
> > System.arraycopy(partBuffer, 0, content, offset,
> > partBuffer.length);
> > offset += partBuffer.length;
> > }
> >
> > return content;
> > }
> >
> > Disclaimer: This approach is limited to small files (multiple megabytes
> > rather than hundreds/gigs) because of the inefficient memory
> > consumption. It's also quite slow as the commons fileuploader first
> > receives all the data, then writes the entire temporary file, then it's
> > read again entirely into memory, then written back to your
> > database/filesystem. There's no other built-in approach in Struts2 but
> > you'll find ajax fileuploaders on the web that handle massive files
> > better than this.
> >
> > regards,
> > Jeromy Evans
> >
> >
> >
> > ---------------------------------------------------------------------
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> >
> >
> >
> Quoted from:
>
> http://www.nabble.com/Struts-2-File-upload-to-store-the-filedata-tp14168069p14169822.html
>
>
> --
> View this message in context:
> http://www.nabble.com/Huge-File-upload-in-struts-2-tp23870472p23870472.html
> Sent from the Struts - User mailing list archive at Nabble.com.
>
>
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