hi jake,
thanks for your replies.
in my case i have jsp-page with a form. the user should have the
possibility to select a file. i used the <input type="file"
name="test"> directive from html.
after the user selected a file, he clicks a button. by clicking this
button the binary data of the selected file should be read and saved
in a blob in the GAE storage.
afterwards i'll give the user the possibility to open the uploaded
file by clicking a link...
therefore, should i use this gaevfs or not?
up to now my major problem is, how can i get the binary data from the
form in my servlet class where i handle the form actions? i got all
other informations by HttpServletRequest.getParameter("test");
greatz and hoping for some help ;-)
flo
On 2 Mrz., 15:24, Jake <[email protected]> wrote:
> You're not limited to 1MB - you're just limited to using 1MB
> entities. The GAEVFS link I sent you implies that it's files can span
> multiple entities. As Mrityunjay stated, though, large storage
> requires payment. See the quotas for
> details:http://code.google.com/appengine/docs/quotas.html
>
> Jake
>
> On Mar 1, 12:43 pm, Valentino Hankypants <[email protected]> wrote:
>
> > so i only can upload binary data up to 1 MB?
> > any possibility to upload binary data with GBs?
>
> > greatz
>
> > On 1 Mrz., 18:36, Jake <[email protected]> wrote:
>
> > > Hey,
>
> > > Saving binary data to the datastore isn't too difficult - you can just
> > > use a Blob type and ensure that you don't break the 1MB capacity of a
> > > single entity. You can see my class declaration below. The "hard"
> > > part is converting a file upload to a byte[] and then from a byte[]
> > > back into what you would consider a "downloadable" file. That
> > > depends, somewhat, on your implementation. For example, I use the
> > > Wicket architecture and all I need to do is
>
> > > FileUpload f = fileUploadField.getFileUpload();
> > > BinaryFileData b = new BinaryFileData(f.getBytes());
> > > pm.makePersistent(b);
>
> > > I presume you are not using Wicket, but some other framework. You'll
> > > need to look into how it handles file uploads.
>
> > > You may also find this interesting:http://code.google.com/p/gaevfs/
> > > I haven't used it, but it skips the whole byte[] thing entirely.
>
> > > Jake
>
> > > @PersistenceCapable(identityType = IdentityType.APPLICATION)
> > > public class BinaryFileData implements Serializable {
>
> > > private static final long serialVersionUID = 1L;
>
> > > @PrimaryKey
> > > @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
> > > private Key key;
>
> > > @Persistent
> > > private String name;
>
> > > @Persistent
> > > private String mimeType;
>
> > > @Persistent(defaultFetchGroup="true")
> > > private Blob data;
>
> > > public BinaryFileData(byte[] bytes) {
> > > this.data = new Blob(bytes);
> > > }
>
> > > public byte[] getData() {
> > > return data.getBytes();
> > > }
>
> > > public void setData(byte[] d) {
> > > this.data = new Blob(d);
> > > }
>
> > > }
>
> > > On Mar 1, 11:25 am, Valentino Hankypants <[email protected]> wrote:
>
> > > > hello together,
>
> > > > i started working with the app engine some days ago, and now i want to
> > > > save some binary data (pdf, etc.) from my app (eg by clicking a
> > > > button) in the storage system.
>
> > > > anybody who can help me doing this? (tutorials, etc.)
>
> > > > greatz
> > > > flo
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