[英]Download files from S3 bucket + folder
我正在使用AWS開發工具包編寫Powershell腳本,以從S3中存儲桶中的特定目錄中下載指定數量的文件。
運行腳本時,對於循環的每次迭代,都會收到此錯誤:
Read-S3Object : Illegal characters in path.
At line:21 char:5
+ Read-S3Object -BucketName $BucketName -Key $Key -File $LocalFile
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (Amazon.PowerShe...dS3ObjectCmdlet:ReadS3ObjectCmdlet) [Read-S3Object], Inv
alidOperationException
+ FullyQualifiedErrorId : Amazon.Runtime.AmazonServiceException,Amazon.PowerShell.Cmdlets.S3.ReadS3ObjectCmdlet
我嘗試了一些變化,我懷疑這是包含:或\\的文件夾的問題
Param(
[Parameter(Mandatory=$False)] [String]$WorkingDir = "C:\Temp\Testing\",
[Parameter(Mandatory=$False)] [String]$BucketName = "BucketName",
[Parameter(Mandatory=$False)] [String]$DownloadFolder = "Testing",
[Parameter(Mandatory=$False)] [int]$FileCount = 100
)
$FilesToDownload = Get-S3Object -BucketName $BucketName -KeyPrefix $DownloadFolder -MaxKey $FileCount
$FilesToDownload | ForEach-Object {
$Key = ($_.Key | Out-String)
$File = $Key.TrimStart($DownloadFolder + "/")
$LocalFile = Join-Path $WorkingDir $File
Read-S3Object -BucketName $BucketName -Key $Key -File $LocalFile
}
我可以使以下內容起作用,這基本上就是ForEach循環正在做的事情:
Read-S3Object -BucketName BucketName -Key Testing/text.txt -File C:\Temp\Testing\test.txt
看起來$ LocalFile變量中有一些非法字符,尤其是回車符,換行符。
我通過以下方法解決了它:
$LocalFile = $LocalFile -replace "`n",""
$LocalFile = $LocalFile -replace "`r",""
真正的問題是以下幾行。
$Key = ($_.Key | Out-String)
如果只設置$ Key = $ _。Key,則不會從字符串中得到回車符。
這可能更簡單:
Get-S3Object -BucketName ${BucketName} -Region ${RegionName} | Select-Object -First ${FileCount} | Copy-S3Object -LocalFolder ${WorkingDir}
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