I asked ChatGPT:
Generate code in B4J language (not pure Java) that performs the following tasks on SharePoint:
- get a list of files
- download a file
- delete the downloaded file
It generated code that used a non-existent jShare library. So I wrote it to use OKHttpUtils2.
Its answer:
To interact with SharePoint using the OkHttpUtils2 library in B4J, you will need to handle HTTP requests directly. Below is an example of how to get a list of files, download a file, and delete the downloaded file from SharePoint using OkHttpUtils2.
Example Code
Here's a B4J example demonstrating these tasks:
- Add OkHttpUtils2 Library:
- Ensure you have the OkHttpUtils2 library in your B4J project. You can add it via Tools -> Libraries... and select OkHttpUtils2.
- SharePoint API Configuration:
- Ensure you have the necessary SharePoint API endpoints and permissions configured.
Complete Example Code
#Region Project Attributes
#MainFormWidth: 600
#MainFormHeight: 400
#End Region
' Import required libraries
#AdditionalJar: okhttp-3.12.1
#AdditionalJar: okio-1.15.0
#AdditionalJar: commons-codec-1.10
#AdditionalJar: commons-logging-1.2
#AdditionalJar: httpclient-4.5.2
#AdditionalJar: httpcore-4.4.4
Sub Process_Globals
Private fx As JFX
Private MainForm As Form
Private job As HttpJob
Private SharePointSiteUrl As String = "https://your-sharepoint-site-url"
Private SharePointUsername As String = "your-username"
Private SharePointPassword As String = "your-password"
End Sub
Sub AppStart (Form1 As Form, Args() As String)
MainForm = Form1
MainForm.Show
' Example usage:
' List files in a SharePoint library
ListFiles("/sites/yoursite/Documents")
' Download a file from SharePoint
DownloadFile("/sites/yoursite/Documents/SampleFile.txt", "C:\Downloads\SampleFile.txt")
End Sub
Sub ListFiles(libraryPath As String)
Dim url As String = SharePointSiteUrl & "/_api/web/GetFolderByServerRelativeUrl('" & libraryPath & "')/Files"
job.Initialize("ListFiles", Me)
job.Username = SharePointUsername
job.Password = SharePointPassword
job.Download(url)
End Sub
Sub DownloadFile(filePath As String, destinationPath As String)
Dim url As String = SharePointSiteUrl & "/_api/web/GetFileByServerRelativeUrl('" & filePath & "')/$value"
job.Initialize("DownloadFile", Me)
job.Username = SharePointUsername
job.Password = SharePointPassword
job.Download(url)
job.GetRequest.SetResponseDestination(destinationPath)
End Sub
Sub DeleteFile(filePath As String)
Try
File.Delete(filePath)
Log($"File '${filePath}' deleted."$)
Catch
Log($"Failed to delete file '${filePath}'."$)
End Try
End Sub
Sub JobDone(Job As HttpJob)
If Job.Success Then
Select Job.JobName
Case "ListFiles"
Log("Files: " & Job.GetString)
Case "DownloadFile"
Log("File downloaded successfully.")
End Select
Else
Log("Error: " & Job.ErrorMessage)
End If
Job.Release
End Sub
Explanation
- Initialization:
- job.Initialize initializes the HTTP job for each task (list files, download file).
- job.Username and job.Password are used to authenticate the requests.
- List Files:
- ListFiles function sends a GET request to the SharePoint REST API to list files in the specified libraryPath.
- Download File:
- DownloadFile function sends a GET request to download a file from SharePoint to the specified local destinationPath.
- Delete File:
- DeleteFile function deletes the downloaded file from the local file system.
- JobDone:
- Handles the completion of the HTTP job and logs the response or any errors.
Notes
- Ensure you replace "https://your-sharepoint-site-url", "your-username", and "your-password" with your actual SharePoint credentials and site URL.
- The SharePoint API endpoints used here are RESTful and might require specific permissions and configurations on your SharePoint site.
- Make sure to handle errors and exceptions appropriately in your actual implementation.
- Adjust file paths and library names (libraryPath) as per your SharePoint site structure and requirements.
This example provides a basic framework for interacting with SharePoint using OkHttpUtils2 in B4J. You may need to customize it further based on your specific SharePoint setup and requirements.
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Obviously I haven't tested the source code (I haven't even read it)