Wicket Multiple File Upload
Wickets UploadProgressBar does only work for 'FileUploadField'. This is insufficient for my needs as I need to transfer multiple files which will be added by the User.
I am having a problem using FileUploadField in wicket 1.4.1. The code behind this is writing a temporary file to 'java.io.tmpdir' (see getTempFile in DiskFileItem). The java hosting service I'm using doesn't grant access to the temp directory, nor does it allow the changing of system properties, so I get a security exception whenever I attempt a file upload. DiskFileItem only uses 'java.io.tmpdir' if the repository field is null. I believe that DiskFileItemFactory is used to create DiskFileItem and set up it's repository, and a DiskFileItemFactory is created in the constructor for MultipartServletWebRequest.
So, I need a way of setting the repository, and in MultipartServletWebRequest there is a comment that says 'Configure the factory here, if desired' (line 96 in version 1.4.1). Daftar lagu pop indonesia terbaru. But, the only way I can see of configuring the factory so that it has the desired repository is to edit the code. Have I missed something?
Is there a way of setting the repository without editing the code? Have I got so deep into the code that I've missed the obvious! Would the best way forward be to edit the code and request a change in a future release?
I've had a look at 1.4.8 and it seems to have the same issue. Thanks for your help, Mark. I am having a problem using FileUploadField in wicket 1.4.1.
The code behind this is writing a temporary file to 'java.io.tmpdir' (see getTempFile in DiskFileItem). The java hosting service I'm using doesn't grant access to the temp directory, nor does it allow the changing of system properties, so I get a security exception whenever I attempt a file upload. DiskFileItem only uses 'java.io.tmpdir' if the repository field is null. I believe that DiskFileItemFactory is used to create DiskFileItem and set up it's repository, and a DiskFileItemFactory is created in the constructor for MultipartServletWebRequest. So, I need a way of setting the repository, and in MultipartServletWebRequest there is a comment that says 'Configure the factory here, if desired' (line 96 in version 1.4.1). But, the only way I can see of configuring the factory so that it has the desired repository is to edit the code.
Have I missed something? Is there a way of setting the repository without editing the code? Have I got so deep into the code that I've missed the obvious! Would the best way forward be to edit the code and request a change in a future release? I've had a look at 1.4.8 and it seems to have the same issue. Thanks for your helpMark.
- View this message in context: Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: For additional commands, e-mail: - Jeremy Thomerson.
What I'm actually doing is importing an image into a database. My code opens an input stream on the file selected by the user (FileUploadField.getFileUpload.getInputStream), and uses that to create a blob in the database. I don't do any file writing in my code, that's done in the background by the wicket code. I don't think I can stop the wicket code doing this, and I don't think I should as it seems to use temporary files as part of the upload process. - View this message in context: Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: For additional commands, e-mail: - Jeremy Thomerson.
'create your own FileItemFactory that returns a DatabaseImageStorageFileItem (which you'll have to create). When the request is processed, your DatabaseImageStorageFileItem will be created' I understand your idea, but I still have the problem of how do I make the request use my FileItemFactory. Looking at the code for MultipartServletWebRequest (which is the request type used for a file upload) it hard codes the factory used (line 94 in 1.4.1): DiskFileItemFactory factory = new DiskFileItemFactory; Does wicket provide some hook that I could use to insert my own FileItemFactory, so that it will use that instead of the DiskFileItemFactory? It might just be that I don't understand wicket well enough and I'm looking in the wrong place.
I use FileUploadField on the form, but I can't see anything in there that allows a factory to be specified. 'create your own FileItemFactory that returns a DatabaseImageStorageFileItem (which you'll have to create). When the request is processed, your DatabaseImageStorageFileItem will be created' I understand your idea, but I still have the problem of how do I make the request use my FileItemFactory. Looking at the code for MultipartServletWebRequest (which is the request type used for a file upload) it hard codes the factory used (line 94 in 1.4.1): DiskFileItemFactory factory = new DiskFileItemFactory; Does wicket provide some hook that I could use to insert my own FileItemFactory, so that it will use that instead of the DiskFileItemFactory? It might just be that I don't understand wicket well enough and I'm looking in the wrong place. I use FileUploadField on the form, but I can't see anything in there that allows a factory to be specified.
- View this message in context: Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: For additional commands, e-mail: The latest 1.4.9 has a constructor in MultipartServletWebRequest that takes a FileItemFactory.
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I'm not sure how long that constructor has been there. Jeremy Thomerson. I don't know about google app engine. The hosting service I'm with uses tomcat 6.0.x. However, the software you attached showed me what I needed to do.
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The bit I had missed was overriding newWebRequest in my web application. It was obvious once it had been pointed out to me!
I've not tried it yet, but upgrading to a later version with the MultipartServletWebRequest constructor that takes a FileItemFactory, should enable me to use mostly wicket code. I'll simply need to use the overriding pattern shown in the previously mentioned software to call it.