Download subfolders folders in SharePoint 2019 on-premise?

Question

I am using Sharepoint Server 2019, I would like to download a sub folder within a document library. I only want to grab the sub folder not all folders/files in the document library. How should I correctly fill in the SharePoint Management Script below so that I do not end up downloading a bunch of unnecessary documents that will need to be deleted and only the sub folder that I want.?

Also how would I figure out the path or URL of the subfolder that I am seeking to download?

Add-PSSnapin Microsoft.Sharepoint.Powershell  
$SiteURL = "http://sp/sites/echo"  
$LibraryName ="Documents"  
$DownloadPath ="C:\temp"  
Function Download-SPFolder($SPFolderURL, $DownloadPath)  
{  
     Try {  
         $SPFolder = $web.GetFolder($SPFolderURL)  
         Write-host $SPFolder  
         $DownloadPath = Join-Path $DownloadPath $SPFolder.Name   
         If (!(Test-Path -path $DownloadPath))  
         {     
             $LocalFolder = New-Item $DownloadPath -type directory  
         }  
         #Loop through each file in the folder and download it to Destination  
         ForEach ($File in $SPFolder.Files)  
         {  
             #Download the file  
             $Data = $File.OpenBinary()  
             $FilePath= Join-Path $DownloadPath $File.Name  
             [System.IO.File]::WriteAllBytes($FilePath, $data)  
             Write-host -f Green "`tDownloaded the File:"$File.ServerRelativeURL          
         }  
         #Process the Sub Folders & Recursively call the function  
         ForEach ($SubFolder in $SPFolder.SubFolders)  
         {  
             If($SubFolder.Name -ne "Forms")  
             {  
                 #Call the function Recursively  
                 Download-SPFolder $SubFolder $DownloadPath  
             }  
         }  
     }  
     Catch {  
         Write-host -f Red "Error Downloading Document Library:" $_.Exception.Message  
     }   
}  
#Main Function  
Function Download-SPDocumentLibrary($SiteURL, $LibraryName, $DownloadPath)  
{  
     Try {  
         #Get the  Web  
         $Web = Get-SPWeb $SiteURL  
         #Delete any existing files and folders in the download location  
         If (Test-Path $DownloadPath) {Get-ChildItem -Path $DownloadPath -Recurse| ForEach-object {Remove-item -Recurse -path $_.FullName }}  
         #Get the document Library to Download  
         $Library = $Web.Lists[$LibraryName]  
         Write-host -f magenta "Downloading Document Library:" $Library.Title  
         #Call the function to download the document library  
         Download-SPFolder -SPFolderURL $Library.RootFolder.Url -DownloadPath $DownloadPath  
         Write-host -f Green "*** Download Completed  ***"  
     }  
     Catch {  
         Write-host -f Red "Error Downloading Document Library:" $_.Exception.Message  
     }   
}  
Download-SPDocumentLibrary $SiteURL $LibraryName $DownloadPath

Answer 1

Hi @Tevon2.0 ,

You can download specific folders using this powershell (You need to replace SharePointFolderUrl and LocalFolderPath in the last line of code).

The url of a specific folder/subfolder can be viewed by the end of the URL of the page(%2F = Forward slash (/), %20= Forward slash (Space)), for example:

Add-PSSnapin Microsoft.Sharepoint.PowerShell

function Download-Folder
{
    [CmdletBinding()]
    param
    (
        [Parameter(Mandatory=$true)][string]$SharePointFolderUrl,
        [Parameter(Mandatory=$true)][string]$Path,
        [Parameter(Mandatory=$false)][switch]$Recurse
    )

    begin
    {
    }
    process
    {
        $site   = New-Object Microsoft.SharePoint.SPSite($SharePointFolderUrl)
        $web    = $site.OpenWeb()
        $folder = $web.GetFolder($SharePointFolderUrl)

        if( $folder.Exists )
        {
            Write-Verbose "$(Get-Date) - Processing Folder: $($folder.ServerRelativeUrl)"

            foreach( $file in $folder.Files )
            {
                $fileUrl = $site.MakeFullUrl($file.ServerRelativeUrl)
            
                Write-Verbose "$(Get-Date) - Downloading File: $($fileUrl)"

                $response = Invoke-WebRequest -Uri $fileUrl -UseDefaultCredentials -Verbose:$false
                
                try
                {
                    # combine the provided path to the server relative url
                    $savePath = Join-Path -Path $Path -ChildPath $file.ParentFolder.ServerRelativeUrl

                    # ensure the folder exists
                    New-Item -Path $savePath -ItemType Directory -Force | Out-Null

                    # add the file name to the path
                    $savePath = Join-Path -Path $savePath -ChildPath $file.Name
                    
                    # save the bits locally
                    $stream = New-Object System.IO.FileStream( $savePath, [System.IO.FileMode]::Create, [System.IO.FileAccess]::ReadWrite)
                    $response.RawContentStream.CopyTo($stream)
                }
                finally
                {
                    if( $stream ) 
                    {
                        $stream.Close()
                        $stream.Dispose()
                    }
                }
            }

            if( $Recurse )
            {
                foreach( $subFolder in $folder.SubFolders )
                {
                    if( $subFolder.Item )
                    {
                        $subFolderUrl = $site.MakeFullUrl($subFolder.ServerRelativeUrl)
                        Download-Folder -SharePointFolderUrl $subFolderUrl -Path $Path -Recurse
                    }
                }
            }
        }
    }
    end
    {
    }
}

Download-Folder -SharePointFolderUrl "http://sp19/sites/luyi19/Shared Documents/folder1" -Path "C:\SP" -Recurse -Verbose

The download effect diagram after running is shown in the figure below (it will automatically create a local folder to store the file):

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