Beginner question, Powershell, File download

I can't provide API support by remote desktop, phone, or chat, but I'll be happy to help here. I could use some more information about the issue you're seeing though. Can you share the following?

• the steps to reproduce the issue, including relevant code snippet(s), but don't include any access token(s)
• the full text of any error or unexpected output

Hello Greg-DB

sure, this is all for testing, when I creating the API I use , App Folder API but someone say thats worng this key is only for 4 hour not more, but Full Dropbox I dont like full acces I need only share 1 Folder

1. Creating a APP then click Generate Access Token, I copy this token and open rul, 

https://dropbox.github.io/dropbox-api-v2-explorer/#files_download_zip

Insert the Token that I have Copy and click Get Token, then this Token I insert to the PS Script $AuthToken

This is working but as y say after 4 hour the Token dosent work anymore

Hope this helps, and thx for helping me

code

function ParseErrorForResponseBody($Error) {
if ($PSVersionTable.PSVersion.Major -lt 6) {
if ($Error.Exception.Response) {
$Reader = New-Object System.IO.StreamReader($Error.Exception.Response.GetResponseStream())
$Reader.BaseStream.Position = 0
$Reader.DiscardBufferedData()
$ResponseBody = $Reader.ReadToEnd()
if ($ResponseBody.StartsWith('{')) {
$ResponseBody = $ResponseBody | ConvertFrom-Json
}
return $ResponseBody
}
}
else {
return $Error.ErrorDetails.Message
}
}
function Get-DropboxFolder {

[CmdletBinding()]
Param(
[string]$DropboxFolder,
[string]$OutputFolder,
[string]$FolderPath
)
$body = '{"path":"/'+$DropboxFolder+'"}'

$AuthToken = 'xxxxxxxxxxxxx'
$token = "Bearer $AuthToken"

#The file will be downloaded as ZIP to the Temp folder of the user
#$Tempfolder = "$env:temp\Downloaded_File.zip"
$Tempfolder = "$env:HOMEDRIVE\temp\Downloaded_File.zip"

if (!(Test-Path $FolderPath)){
Write-Verbose "Downloading the folder..."
try{
Invoke-RestMethod `
-Method POST `
-Uri "https://content.dropboxapi.com/2/files/download_zip" `
-Headers @{ "Authorization" = $token; "Dropbox-API-Arg" = $body} `
-OutFile $Tempfolder -ContentType ""

#The file will be extracted and then removed from the temp
write-verbose "Extracting the folder..."
Expand-Archive -LiteralPath $Tempfolder -DestinationPath $OutputFolder -Force
write-verbose $OutputFolder
write-verbose $Tempfolder
Remove-Item $Tempfolder -Force
Write-Verbose "The folder has been downloaded."
}
catch {
ParseErrorForResponseBody($_)
}

}else{
Write-Verbose "Folder Exists."
}

}

$DropboxFolder = "vpin"
$OutputFolder = "$env:HOMEDRIVE\temp\1-Downloads"
$FolderPath = "$OutputFolder\vpin"

Get-DropboxFolder -DropboxFolder $DropboxFolder -OutputFolder $OutputFolder -FolderPath $FolderPath -verbose

It sounds like you actually retrieved an access token from two places:

1. your app's page on the App Console, using the "Generate" button
2. the API v2 Explorer, using the "Get Token" button

You do not need to do both however. If you just need an access token for your own account and app, you can just use the first option. Your app's "Access token expiration" setting only applies to your own app, not the API v2 Explorer.

It sounds like you then actually used the access token from the API v2 Explorer though, which would be short-lived, and so expires after four hours. (You can tell if an access token is short-lived by looking at the beginning of the string. If it begins with "sl.", it is short-lived.) If you need a long-lived access token for your own app, you should just use option 1 and copy that access token.

In any case, if/when you get an error response from the API, make sure you print out the response body for error information.