powershell - 在try/catch中使用Powershell-else

Question

我尝试在get-addomain成功时编写输出。

仅当命令失败时，try/catch才会写入输出

try {

get-addomain -Identity  d.contoso.com  

}

catch {

Write-Output "failed"

}

我尝试了以下操作:

if (-not (get-addomain -Identity  d.contoso.com))
{
return "failed"
}

else

{
write-output "ok"
}

和

If (get-addomain -Identity  d.contoso.com  )
{
    Write-Output "ok"
}
Else
{
    write-output "failed"
}

但在两种情况下

get-addomain : Cannot find an object with identity: 'd.contoso.com' under: 'DC=ad,DC=contoso,DC=com'.

Answer 1

try块运行，直到引发错误为止。如果get-addomain没有以错误结尾，则try-case将运行{}内编写的以下命令。

因此，一种方法是仅在没有错误抛出的情况下说输出正常:

try {
  get-addomain -Identity  d.contoso.com  
  Write-Output "ok"
}

catch {
  Write-Output "failed"
}

但是，如果您想再次检查，仍然可以在 if中进行 try-catch检查:

try {
  If (get-addomain -Identity  d.contoso.com  )
  {
      Write-Output "ok"
  }
  Else
  {
    write-output "failed"
  }
}
catch {
  Write-Output "failed"
}