我正在Powershell中构建文件监视脚本。我一直在处理https://gallery.technet.microsoft.com/scriptcenter/Powershell-FileSystemWatche-dfd7084b中的代码
一切似乎都正常，但是当我进行一些实际测试时，我注意到更改事件仅在父目录上触发，而不是实际文件本身。以下是我已经挖掘和更新的代码:
$folder = 'C:\extended_attributes\testing\DesignerVistaReorganize' # Enter the root path you want to monitor.
$filter = '*.*' # You can enter a wildcard filter here.
# In the following line, you can change 'IncludeSubdirectories to $true if required.
$fsw = New-Object IO.FileSystemWatcher $folder, $filter -Property @{IncludeSubdirectories = $true;NotifyFilter = [IO.NotifyFilters]'FileName, LastWrite'}
# Here, all three events are registerd. You need only subscribe to events that you need:
Register-ObjectEvent $fsw Created -SourceIdentifier FileCreated -Action {
$name = $Event.SourceEventArgs.Name
$changeType = $Event.SourceEventArgs.ChangeType
$timeStamp = $Event.TimeGenerated
$filePath = -join($folder,"\",$name) | Out-String
Write-Host "The file '$filePath' was $changeType at $timeStamp" -fore green
Out-File -FilePath C:\extended_attributes\testing\outlog.txt -Append -InputObject "The file '$filePath' was $changeType at $timeStamp"}
Register-ObjectEvent $fsw Deleted -SourceIdentifier FileDeleted -Action {
$name = $Event.SourceEventArgs.Name
$changeType = $Event.SourceEventArgs.ChangeType
$timeStamp = $Event.TimeGenerated
$filePath = -join($folder,"\",$name) | Out-String
Write-Host "The file '$filePath' was $changeType at $timeStamp" -fore red
Out-File -FilePath C:\extended_attributes\testing\outlog.txt -Append -InputObject "The file '$filePath' was $changeType at $timeStamp"}
Register-ObjectEvent $fsw Changed -SourceIdentifier FileChanged -Action {
$name = $Event.SourceEventArgs.Name
$changeType = $Event.SourceEventArgs.ChangeType
$timeStamp = $Event.TimeGenerated
$filePath = -join($folder,"\",$name) | Out-String
Write-Host "The file '$filePath' was $changeType at $timeStamp" -fore white
Out-File -FilePath c:\scripts\filechange\outlog.txt -Append -InputObject "The file '$filePath' was $changeType at $timeStamp"}
delete和create事件按预期运行(如下所示):
文件创建:
The file 'C:\extended_attributes\testing\DesignerVistaReorganize\Cart_Warnings\newFile.txt' Created at 10/01/2018 14:55:35
文件删除:
The file 'C:\extended_attributes\testing\DesignerVistaReorganize\Cart_Warnings\newFile.txt' Deleted at 10/01/2018 14:56:47
我注意到的另一件事是，更改事件仅在根目录下的第一个文件更改时触发。每当创建或删除文件时，就会触发另外两个事件。之前有人遇到过此问题吗？如果可以，请提供一些解决方法的见解？
解决(虽然不是有效答案)
我尝试了很多不同的尝试，试图使该事件始终如一地触发，但似乎只有一种可行。我有两个用于文件更改事件的脚本。它们几乎完全相同，只是事件完成后彼此调用。关键是不能确保在调用第二个脚本之前通过注销事件来杀死观察者。
脚本1
$folder = 'C:\extended_attributes\testing\DesignerVistaReorganize' # Enter the root path you want to monitor.
$filter = '*.*' # You can enter a wildcard filter here.
# In the following line, you can change 'IncludeSubdirectories to $true if required.
$fsw = New-Object IO.FileSystemWatcher $folder, $filter -Property @{IncludeSubdirectories = $true;NotifyFilter = [IO.NotifyFilters]'FileName, LastWrite'}
Register-ObjectEvent $fsw Changed -SourceIdentifier FileChanged -Action {
echo "Script 1"
$name = $Event.SourceEventArgs.Name
$changeType = $Event.SourceEventArgs.ChangeType
$timeStamp = $Event.TimeGenerated
$filePath = -join($folder,"\",$name) | Out-String
Unregister-Event FileChanged
Write-Host "The file '$filePath' was $changeType at $timeStamp" -fore white
Out-File -FilePath C:\extended_attributes\testing\outlog.txt -Append -InputObject "The file '$filePath' was $changeType at $timeStamp"
.\change_watcher_2.ps1
}
脚本2
$folder = 'C:\extended_attributes\testing\DesignerVistaReorganize' # Enter the root path you want to monitor.
$filter = '*.*' # You can enter a wildcard filter here.
# In the following line, you can change 'IncludeSubdirectories to $true if required.
$fsw = New-Object IO.FileSystemWatcher $folder, $filter -Property @{IncludeSubdirectories = $true;NotifyFilter = [IO.NotifyFilters]'FileName, LastWrite'}
Register-ObjectEvent $fsw Changed -SourceIdentifier FileChanged -Action {
echo "Script 2"
$name = $Event.SourceEventArgs.Name
$changeType = $Event.SourceEventArgs.ChangeType
$timeStamp = $Event.TimeGenerated
$filePath = -join($folder,"\",$name) | Out-String
Unregister-Event FileChanged
Write-Host "The file '$filePath' was $changeType at $timeStamp" -fore white
Out-File -FilePath C:\extended_attributes\testing\outlog.txt -Append -InputObject "The file '$filePath' was $changeType at $timeStamp"
.\change_watcher_1.ps1
}
输出
PS C:\extended_attributes\testing> C:\extended_attributes\testing\change_watcher_1.ps1
Id Name PSJobTypeName State HasMoreData Location Command
-- ---- ------------- ----- ----------- -------- -------
2 FileChanged NotStarted False ...
PS C:\extended_attributes\testing> The file 'C:\extended_attributes\testing\DesignerVistaReorganize\BusinessPrinting
' was Changed at 10/02/2018 10:46:43
The file 'C:\extended_attributes\testing\DesignerVistaReorganize\Editor_Warnings
' was Changed at 10/02/2018 10:47:09
The file 'C:\extended_attributes\testing\DesignerVistaReorganize\Mobile\Mobile_Control_Panel_2015_05_14.dvf
' was Changed at 10/02/2018 10:49:50
The file 'C:\extended_attributes\testing\DesignerVistaReorganize\Mobile
' was Changed at 10/02/2018 10:49:58
The file 'C:\extended_attributes\testing\DesignerVistaReorganize\Mobile\Gradients_Panels_Colors_Menus_2015_03_01.dvf
' was Changed at 10/02/2018 10:51:49
The file 'C:\extended_attributes\testing\DesignerVistaReorganize\Mobile\Tablet_Editor_2015_03_31.dvf
' was Changed at 10/02/2018 10:52:46
The file 'C:\extended_attributes\testing\DesignerVistaReorganize\Mobile
' was Changed at 10/02/2018 10:52:57
我真的希望有一个比这更好的解决方案，因为我可以预见到这种方法会带来许多问题。
最佳答案
我找到了比原始问题更新中发布的解决方案更好的解决方案。如果您对EnableRaisingEvents使用属性，如下所示。每当对文件系统进行更改时，都会触发该事件:
$watcher = New-Object System.IO.FileSystemWatcher
$watcher.Path = 'C:\extended_attributes\testing\DesignerVistaReorganize'
$watcher.IncludeSubdirectories = $true
$watcher.EnableRaisingEvents = $true
$changed = Register-ObjectEvent $watcher "Changed" -Action {
write-host "Changed: $($eventArgs.FullPath)"
$creation_time = gi -Path $eventArgs.FullPath | get-itemproperty | select -ExpandProperty CreationTime | Get-date -Format s
$file_extension = gi -Path $eventArgs.FullPath | get-itemproperty | select -ExpandProperty Extension
$file_base_name = gi -Path $eventArgs.FullPath | get-itemproperty | select -ExpandProperty BaseName
$last_access_time = gi -Path $eventArgs.FullPath | get-itemproperty | select -ExpandProperty LastAccessTime | Get-date -Format s
$last_write_time = gi -Path $eventArgs.FullPath | get-itemproperty | select -ExpandProperty LastWriteTime | Get-date -Format s
Write-Host "Creation time: $($creation_time)"
Write-Host "ex: $($file_extension)"
Write-Host "Name: $($file_base_name)"
Write-Host "access: $($last_access_time)"
Write-Host "write: $($last_write_time)"
$object = New-Object System.Object
$object | Add-Member -type NoteProperty –Name Extension –Value $file_extension
$object | Add-Member -type NoteProperty –Name BaseName –Value $file_base_name
$object | Add-Member -type NoteProperty –Name Createtime –Value $creation_time
$object | Add-Member -type NoteProperty –Name Accesstime –Value $last_write_time
$object | Add-Member -type NoteProperty –Name Writetime –Value $last_access_time
Write-Host "After Object"
# Load the module
Import-Module Mdbc
# Connect the new collection test.test
Connect-Mdbc . test test -NewCollection
# add the objects to the collection
$object | Add-MdbcData
# Get all data as custom objects and show them in a table
Get-MdbcData -As PS | Format-Table -AutoSize | Out-String
}