$Events = Get-WinEvent -ComputerName syddc01 -FilterHashtable @{Logname='Security';Id=4771} -MaxEvents 1 
$eventXML = [xml]$Event.ToXml() 
$eventxml.event.event.data

根據(jù)這個(gè)思路，我如果想獲取最新的20個(gè)4771的事件日志，并輸出結(jié)果

$Events = Get-WinEvent -ComputerName syddc01 -FilterHashtable @{Logname='Security';Id=4771} -MaxEvents 20     
       
# Parse out the event message data       
ForEach ($Event in $Events) {       
  # Convert the event to XML       
  $eventXML = [xml]$Event.ToXml()       
  # Iterate through each one of the XML message properties       
  For ($i=0; $i -lt $eventXML.Event.EventData.Data.Count; $i++) { 
    
       
    # Append these as object properties       
    Add-Member -InputObject $Event -MemberType NoteProperty -Force -Name $eventXML.Event.EventData.Data[$i].name -Value $eventXML.Event.EventData.Data[$i].'#text'      
  }       
}       
  
   
$events | select Message, TargetUserName, ipaddress,timecreated | Out-GridView

有的時(shí)候，事件的數(shù)目很多，我希望對(duì)這個(gè)時(shí)間進(jìn)行一個(gè)限制。千萬(wàn)別用 where-object 的方式來(lái)過(guò)濾，不然等到地老天荒也未必出結(jié)果。
我們需要通過(guò)哈希表來(lái)過(guò)濾

$endtime=get-date
$starttime=$endtime.addminutes(-1) 
$eventcritea = @{logname='security';id=4740;starttime=$starttime;endtime=$endtime}

另外一種常見的方式是通過(guò)xmlfilter來(lái)過(guò)濾日志

首先，我們可以通過(guò)event viewer來(lái)自定義一個(gè)xpath

因?yàn)槭遣煌氖录膃ventdata結(jié)果是不一樣的，因此我做了些變動(dòng)。

[xml]$xmlFilter = @" 
<QueryList> 
 <Query Id="0" Path="Application"> 
  <Select Path="Application">*[System[(EventID=1002) and TimeCreated[timediff(@SystemTime) &lt;= 604800000]]]</Select> 
 </Query> 
</QueryList> 
“@ 
#Get-WinEvent -ComputerName $DC.DC -LogName Security -FilterXPath "*[System[(EventID=529 or EventID=644 or EventID=675 or EventID=676 or EventID=681 or EventID=4625) and TimeCreated[timediff(@SystemTime) &lt;= 86400000]]]" #-MaxEvents 50 
$Events = Get-WinEvent -ComputerName syddc01 -FilterXML $xmlFilter 
ForEach ($Event in $Events) {       
  # Convert the event to XML       
  $eventXML = [xml]$Event.ToXml()       
  # Iterate through each one of the XML message properties       
  For ($i=0; $i -lt $eventXML.Event.EventData.Data.Count; $i++) { 
    
       
    # Append these as object properties       
    Add-Member -InputObject $Event -MemberType NoteProperty -Force -Name "App" -Value $eventXML.Event.EventData.Data[5]      
  }       
}   
$Events | select Message, App, providerName, timecreated | Out-GridView

結(jié)果如下

最后再給一個(gè)例子，我希望獲取lockout用戶的信息以及他們是在哪里被鎖住的，這個(gè)日志我們查看4771或者4740。4771的日志過(guò)多，查詢太慢，所以這里我已4740為例。

eventcritea = @{logname='security';id=4740} 
$Events =get-winevent -ComputerName (Get-ADDomain).pdcemulator -FilterHashtable $eventcritea 
#$Events = Get-WinEvent -ComputerName syddc01 -Filterxml $xmlfilter     
       
# Parse out the event message data       
ForEach ($Event in $Events) {   
    
  # Convert the event to XML       
  $eventXML = [xml]$Event.ToXml()   
      
  # Iterate through each one of the XML message properties       
  For ($i=0; $i -lt $eventXML.Event.EventData.Data.Count; $i++) { 
    
       
    # Append these as object properties       
    Add-Member -InputObject $Event -MemberType NoteProperty -Force -Name $eventXML.Event.EventData.Data[$i].name -Value $eventXML.Event.EventData.Data[$i].'#text'      
  }       
}       
  
   
$events | select TargetUserName,timecreated, targetdomainname | Out-GridView -Title LockOutStatus 
break; 
Search-ADAccount -LockedOut | ForEach-Object {Unlock-ADAccount -Identity $_.distinguishedname }