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(VBScript) Box.com Streaming Upload File

Demonstrates how to upload a file to box.com, streaming the file directly from the filesystem.

Note: This example requires a fix that is included in Chilkat v9.5.0.70 and above.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
Set outFile = fso.CreateTextFile("output.txt", True)

'  This requires the Chilkat API to have been previously unlocked.
'  See Global Unlock Sample for sample code.

set rest = CreateObject("Chilkat_9_5_0.Rest")

'    Provide a previously obtained OAuth2 access token.
set oauth2 = CreateObject("Chilkat_9_5_0.OAuth2")
oauth2.AccessToken = "BOX_ACCESS_TOKEN"
success = rest.SetAuthOAuth2(oauth2)

'  First, make the initial connection.
'  A single REST object, once connected, can be used for many Box REST API calls.
'  The auto-reconnect indicates that if the already-established HTTPS connection is closed,
'  then it will be automatically re-established as needed.
bAutoReconnect = 1

'  ----------------------------------------------------------------------
'  IMPORTANT: Note that the domain is "upload.box.com", not "api.box.com"
'  ----------------------------------------------------------------------
success = rest.Connect("upload.box.com",443,1,bAutoReconnect)
If (success <> 1) Then
    outFile.WriteLine(rest.LastErrorText)
    WScript.Quit
End If

'  The request body uses the "multipart/form-data" format to transmit two "parts".
'  The first part is called "attributes" and contains a JSON object with information about the file, including the name of the file
'  and the ID of the parent folder. The second part contains the contents of the file.
'  (Note that the name of the second "part" is ignored.)

success = rest.AddHeader("Content-Type","multipart/form-data")

'  Provide the content for each part of the request...

'  First the JSON attributes.  Use "0" for the root folder.
'    {"name":"hedgehogs.jpg", "parent":{"id":"0"}}
set jsonAttr = CreateObject("Chilkat_9_5_0.JsonObject")
success = jsonAttr.UpdateString("name","hedgehogs.jpg")
success = jsonAttr.UpdateString("parent.id","0")

rest.PartSelector = "1"
success = rest.AddHeader("Content-Disposition","form-data; name=""attributes""; ")
success = rest.SetMultipartBodyString(jsonAttr.Emit())

'  The upload will stream directly from a file.
rest.PartSelector = "2"
success = rest.AddHeader("Content-Disposition","form-data; name=""file""; filename=""hedgehogs.jpg""")
'  "application/octet-stream" can be safely used for any type file..
success = rest.AddHeader("Content-Type","application/octet-stream")

'  IMPORTANT: This example requires Chilkat v9.5.0.70 or later, for a fix that was made in
'  multipart/streaming uploads.
set fileStream = CreateObject("Chilkat_9_5_0.Stream")
fileStream.SourceFile = "qa_data/jpg/hedgehogs.jpg"
success = rest.SetMultipartBodyStream(fileStream)

'  Restore the PartSelector to "0" (for safety, in case something else sends another request on this object)
rest.PartSelector = "0"

'  Send the multipart/form-data request, which uploads the file by streaming directly from the filesystem.
responseBody = rest.FullRequestMultipart("POST","/api/2.0/files/content")
If (rest.LastMethodSuccess <> 1) Then
    outFile.WriteLine(rest.LastErrorText)
    WScript.Quit
End If

'  A 201 is received for a successful upload
If (rest.ResponseStatusCode <> 201) Then
    outFile.WriteLine("Box.com upload failed.")
    outFile.WriteLine("Request header:")
    outFile.WriteLine(rest.LastRequestHeader)
    outFile.WriteLine("---")
    outFile.WriteLine("Response status code = " & rest.ResponseStatusCode)
    outFile.WriteLine("Response body:")
    outFile.WriteLine(responseBody)
    WScript.Quit
End If

outFile.WriteLine("File uploaded.")

outFile.Close

 

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