Scientist Z

Add-PSSnapin Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue


 
#Function to Download All Files from a SharePoint Folder
Function Download-SPFolder($SPFolderURL, $LocalFolderPath, $currentWeb)
{
    Try {
        #Get the Source SharePoint Folder
        $SPFolder = $currentWeb.GetFolder($SPFolderURL)
  
        $LocalFolderPath = Join-Path $LocalFolderPath $SPFolder.Name 
        #Ensure the destination local folder exists! 
        If (!(Test-Path -path $LocalFolderPath))
        {    
            #If it doesn't exists, Create
            $LocalFolder = New-Item $LocalFolderPath -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 $LocalFolderPath $File.Name
            [System.IO.File]::WriteAllBytes($FilePath, $data)
            Write-host -f Green "`tDownloaded File:"$File.ServerRelativeURL
        }
  
        #Process the Sub Folders & Recursively call the function
        ForEach ($SubFolder in $SPFolder.SubFolders)
        {
            If($SubFolder.Name -ne "Forms") #Leave "Forms" Folder
            {
                #Call the function Recursively
                Download-SPFolder $SubFolder $LocalFolderPath
            }
        }
    }
    Catch {
        Write-host -f Red "Error Downloading Document Library:" $_.Exception.Message
    }  
}
 
#Main Function
Function Export-SPLibraries()
{
    Try {
            
 
        #Get the Web Application       
        $WebApp = Get-SPWebApplication $WebAppURL
 
        #Get all Site collections from the web application
        $SitesCollection  = $WebApp.Sites
 
        #Enumerate all site collections in the web application
        Foreach($Site in $SitesCollection)
        {
            Try {
                    #Get Site Collection URL, Owner, Content Database Details
                    Write-host -f Cyan "Working : " $Site.URL
        

                    #Get the Source Web
                    $global:Web = Get-SPWeb $Site.Url

                    #Set site Owner
                    #Set-SPSite -Identity $Site.Url -SecondaryOwnerAlias $Global:SecondaryOwnerAliasAccount

                    $LocalFolderPathWithCurrentSite = $Global:DownloadToLocalFolderPath+$Site.RootWeb.Title

                    Write-host -f White "About to emplty LocalFOlderPath : " $LocalFolderPathWithCurrentSite

                    #Delete any existing files and folders in the download location
                    #If (Test-Path $LocalFolderPathWithCurrentSite) {Get-ChildItem -Path $LocalFolderPathWithCurrentSite  -Recurse| ForEach-object {Remove-item -Recurse -path $_.FullName }}

                    #Iterate through each website insde rootwebsite
                    ForEach($Web in $global:Web.Site.AllWebs)
                    {
                        Try {
                                Write-host -f Yellow "Wokring on: " $Web
                                #Array to Skip System Libraries
                                $SystemLibraries =@("Pages", "Converted Forms", "Master Page Gallery", "Customized Reports", 
                                              "Form Templates", "List Template Gallery", "Theme Gallery", "Reporting Templates", 
                                                  "Site Collection Documents", "Site Collection Images", "Site Pages", "Solution Gallery", 
                                                       "Style Library", "Web Part Gallery","Site Assets", "wfpub")
 
                                #Get all document libraries - Exclude Hidden and System Libraries
                                #$LibraryCollection = $Web.lists | Where-Object  { ($_.BaseType -eq "DocumentLibrary") -and ($_.hidden -eq $false) -and ($SystemLibraries -notcontains $_.Title)}
                                $LibraryCollection = $Web.lists | Where-Object  { ($_.BaseType -eq "DocumentLibrary") -and ($_.hidden -eq $false) -and ($SystemLibraries -notcontains $_.Title)}

 
                                #Iterate through each list and export
                                ForEach($Library in $LibraryCollection)
                                {
                                    try{
                                            Write-host -f magenta "Downloading Document Library:" $Library.Title
 
                                            #Call the function to download the document library
                                            Download-SPFolder -SPFolderURL $Library.RootFolder.Url -LocalFolderPath $LocalFolderPathWithCurrentSite\$Web.Name -currentWeb $Web
                                    }
                                    catch
                                    {
                                        Write-host -f Red "Error Downloading the files:" $_.Exception.Message
                                    }
                                } 
                        }
                        catch{
                            Write-host -f Red "Error web accessing:" $_.Exception.Message
                        }
                    }
            }
            catch{
                Write-host -f Red "Error Site Collection accessing:" $_.Exception.Message
            }
        }
        Write-host "*** Download Completed  ***"
    }
    Catch {
        Write-host -f Red "Error Downloading Document Library:" $_.Exception.Message
    }  
}
 
#region Runtime-Variables
$Global:WebApplication = "http://WebApplicationURL"
$Global:DownloadToLocalFolderPath = "C:\DownloadedSharepointDocs\"
$Global:SecondaryOwnerAliasAccount = "domain\FarmAdminUser"


#endregion Runtime-Variables
 


#Call the Function to download all document libraries from a site
Export-SPLibraries

Good luck!

Thanks to Sharepointdiary for providing Starting code