Re: wicket file upload
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. 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. Thanks. -- View this message in context: http://apache-wicket.1842946.n4.nabble.com/wicket-file-upload-tp2230621p2235813.html Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: wicket file upload
If this mysterious server environment happens to be Google App Engine, there is already some code floating around (@author uudashr) that manages file uploads seamlessly with the datastore. Jake -- View this message in context: http://apache-wicket.1842946.n4.nabble.com/wicket-file-upload-tp2230621p2233852.html Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: wicket file upload
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: http://apache-wicket.1842946.n4.nabble.com/wicket-file-upload-tp2230621p2232247.html Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: wicket file upload
On Wed, May 26, 2010 at 2:51 PM, mdh mhorn...@ntlworld.com wrote: 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: http://apache-wicket.1842946.n4.nabble.com/wicket-file-upload-tp2230621p2232247.html Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org The latest 1.4.9 has a constructor in MultipartServletWebRequest that takes a FileItemFactory. I'm not sure how long that constructor has been there. -- Jeremy Thomerson http://www.wickettraining.com
wicket file upload
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 help, Mark. -- View this message in context: http://apache-wicket.1842946.n4.nabble.com/wicket-file-upload-tp2230621p2230621.html Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: wicket file upload
can you use write(File) instead of getTempFile()? On Tue, May 25, 2010 at 2:59 PM, mdh mhorn...@ntlworld.com wrote: 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 help, Mark. -- View this message in context: http://apache-wicket.1842946.n4.nabble.com/wicket-file-upload-tp2230621p2230621.html Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org -- Jeremy Thomerson http://www.wickettraining.com
Re: wicket file upload
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: http://apache-wicket.1842946.n4.nabble.com/wicket-file-upload-tp2230621p2230746.html Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: wicket file upload
create your own FileItemFactory that returns a DatabaseImageStorageFileItem (which you'll have to create). When the request is processed, your DatabaseImageStorageFileItem will be created, and then getOutputStream will be called, which you should use to return a stream that will write into the database (or, temporarily into memory, later to be saved). I've never had to do this, so I can't be a whole lot more help, but that should get you going. On Tue, May 25, 2010 at 4:27 PM, mdh mhorn...@ntlworld.com wrote: 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: http://apache-wicket.1842946.n4.nabble.com/wicket-file-upload-tp2230621p2230746.html Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org -- Jeremy Thomerson http://www.wickettraining.com
