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Difference between revisions of "Scout/HowTo/3.8/Transfer a file from the client to the server"
(New page: This tutorial describes how to transfer a file from the client to the server by using RemoteFile. = Create the Form = # Create a new form (name: UploadFileForm, no form id, no modify hand...) |
(→Server Side Handling) |
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| (2 intermediate revisions by the same user not shown) | |||
| Line 32: | Line 32: | ||
= Add Menu to Open Form = | = Add Menu to Open Form = | ||
# Add a new sub menu to the Desktop / FileMenu (name UploadFileMenu). | # Add a new sub menu to the Desktop / FileMenu (name UploadFileMenu). | ||
| − | # Overwrite | + | # Overwrite execInitAction() of the new menu as follows: |
<source lang="java"> | <source lang="java"> | ||
UploadFileForm form = new UploadFileForm(); | UploadFileForm form = new UploadFileForm(); | ||
| Line 72: | Line 72: | ||
} | } | ||
return formData; | return formData; | ||
| + | </source> | ||
| + | |||
| + | Alternatively you can store the RemoteFile on the server disk: | ||
| + | <source lang="java"> | ||
| + | RemoteFile remote = formData.getRemoteFile(); | ||
| + | SERVICES.getService(IRemoteFileService.class).putRemoteFile(remote); | ||
</source> | </source> | ||
Now you are able to open the new form via the menu, choose a file to upload, and handle the file content on server side. | Now you are able to open the new form via the menu, choose a file to upload, and handle the file content on server side. | ||
| + | |||
| + | = References = | ||
| + | [http://www.eclipse.org/forums/index.php/t/497216/ Forum post 497216] | ||
Latest revision as of 08:29, 1 October 2013
This tutorial describes how to transfer a file from the client to the server by using RemoteFile.
Contents
Create the Form
- Create a new form (name: UploadFileForm, no form id, no modify handler, no permissions).
- Add a new file chooser field to the main box (name: FileField).
- In Scout Object Properties view, choose Type Load and Mandatory in Behavior for the newly created field.
- Add a new variable named RemoteFile (Bean type RemoteFile) to the form.
Add File Upload Code
Overwrite execStore of the NewHandler as follows:
File file = getFileField().getValueAsFile(); String name = IOUtility.getFileName(file.getAbsolutePath()); String fileExtension = IOUtility.getFileExtension(name); try { RemoteFile remoteFile = new RemoteFile(name, System.currentTimeMillis()); remoteFile.readData(new FileInputStream(file)); remoteFile.setContentLength((int) file.length()); remoteFile.setContentTypeByExtension(fileExtension); setRemoteFile(remoteFile); } catch (IOException e) { throw new ProcessingException("Could not remote file", e); } IUploadFileProcessService service = SERVICES.getService(IUploadFileProcessService.class); UploadFileFormData formData = new UploadFileFormData(); exportFormData(formData); formData = service.create(formData);
Add Menu to Open Form
- Add a new sub menu to the Desktop / FileMenu (name UploadFileMenu).
- Overwrite execInitAction() of the new menu as follows:
UploadFileForm form = new UploadFileForm(); form.startNew(); form.waitFor();
Server Side Handling
Use the following code in the create method of the UploadFileProcessService:
try { // get content from remote file ByteArrayOutputStream bos = new ByteArrayOutputStream(); formData.getRemoteFile().writeData(bos); bos.flush(); byte[] content = bos.toByteArray(); int updated = SQL.update("" + " UPDATE FILES " + " SET CONTENT = :content " + " WHERE FILENAME = :filename " , new NVPair("filename", formData.getRemoteFile().getName()) , new NVPair("content", content) ); if (updated == 0) { SQL.insert("" + " INSERT INTO FILES " + " (FILENAME, CONTENT) " + " VALUES " + " (:filename, :content) " , new NVPair("filename", formData.getRemoteFile().getName()) , new NVPair("content", content) ); } } catch (IOException e) { throw new ProcessingException("Could not persist remote file.", e); } return formData;
Alternatively you can store the RemoteFile on the server disk:
RemoteFile remote = formData.getRemoteFile(); SERVICES.getService(IRemoteFileService.class).putRemoteFile(remote);
Now you are able to open the new form via the menu, choose a file to upload, and handle the file content on server side.