powershell - 继续执行异常

Question

下面是我要执行的脚本。这里的问题是一旦发生异常就会停止执行，我使用了 continue在 catch 块中，但这不起作用。即使发生异常，我如何让它工作，它应该在 foreach 中循环.

我也用过 while($true)循环，但进入无限循环。怎么办？

$ErrorActionPreference = "Stop";
try 
{
# Loop through each of the users in the site
foreach($user in $users)
{
    # Create an array that will be used to split the user name from the domain/membership provider
    $a=@()


    $displayname = $user.DisplayName
    $userlogin = $user.UserLogin


    # Separate the user name from the domain/membership provider
    if($userlogin.Contains('\'))
    {
        $a = $userlogin.split("\")
        $username = $a[1]
    }
    elseif($userlogin.Contains(':'))
    {
        $a = $userlogin.split(":")
        $username = $a[1]
    }

    # Create the new username based on the given input
    $newalias = $newprovider + "\" + $username

    if (-not $convert)
    {
        $answer = Read-Host "Your first user will be changed from $userlogin to $newalias. Would you like to continue processing all users? [Y]es, [N]o"

        switch ($answer)
        {
            "Y" {$convert = $true}
            "y" {$convert = $true}
            default {exit}
        }
    }   

    if(($userlogin -like "$oldprovider*") -and $convert)
    {  

        LogWrite ("Migrating User old : " + $user + " New user : " + $newalias + "    ")
        move-spuser -identity $user -newalias $newalias -ignoresid -Confirm:$false
        LogWrite ("Done")
    }   
} 
}
catch  {
    LogWrite ("Caught the exception")
    LogWrite ($Error[0].Exception)
} 

Answer 1

您使用 try {...} catch {...}当你想处理错误时。如果你想忽略它们，你应该设置 $ErrorActionPreference = "Continue" (或 "SilentlyContinue" )作为@C.B.建议，或使用 -ErrorAction "SilentlyContinue"对于引发错误的特定操作。如果您想处理某个指令的错误，您可以将该指令放在 try {...} catch {...} 中。块，而不是整个循环，例如:

foreach($user in $users) {
  ...
  try {
    if(($userlogin -like "$oldprovider*") -and $convert) {  
      LogWrite ("Migrating User old : " + $user + " New user : " + $newalias + "    ")
      move-spuser -identity $user -newalias $newalias -ignoresid -Confirm:$false
      LogWrite ("Done")
    }   
  } catch {
    LogWrite ("Caught the exception")
    LogWrite ($Error[0].Exception)
  }
}