Question

我需要使用“PowerShell版本2.0”检查URL是否正常工作我通过互联网找到了这个脚本，但对于错误的URL，它并没有得到满足。它应该在else循环中输入错误的URL以及打印网站代码。而且我无法在此脚本中传递凭据。

e.g。对于www.google.com（正确的网址），状态代码应为200但是对于www.gfjgugy79rt9（错误的网址）状态代码应该类似于404

我在互联网上找到PowerShell版本2.0的脚本：

# First we create the request.
$HTTP_Request = [System.Net.WebRequest]::Create('http://google.com')

# We then get a response from the site.
$HTTP_Response = $HTTP_Request.GetResponse()

# We then get the HTTP code as an integer.
$HTTP_Status = [int]$HTTP_Response.StatusCode

If ($HTTP_Status -eq 200) { 
    Write-Host "Site is OK!" 
}
Else {
    Write-Host "The Site may be down, please check!"
}

# Finally, we clean up the http request by closing it.
$HTTP_Response.Close()

Answer 1

在高于2.0的PowerShell中，您应该使用try ... catch ... finally，因为当URI不符合或者DNS无法解决地址部分时，此代码会触发异常：

try {
  # First we create the request.
  $HTTP_Request = [System.Net.WebRequest]::Create('http://google.com')

  # We then get a response from the site.
  $HTTP_Response = $HTTP_Request.GetResponse()

  # We then get the HTTP code as an integer.
  $HTTP_Status = [int]$HTTP_Response.StatusCode

  If ($HTTP_Status -eq 200) { 
      Write-Host "Site is OK!" 
  }
  Else {
    Write-Host "The Site may be down, please check!"
  }
}
catch {
  Write-Verbose $_.ScriptStackTrace
  Write-Verbose "Ligne $($_.InvocationInfo.ScriptLineNumber) : $($_.exception.message)"
}
finally {
  # Finally, we clean up the http request by closing it.
  $HTTP_Response.Close()
}

在PowShell 2.0中，您只需要在范围（函数，脚本）的beginnig中放置Trap代码，以便捕获这些异常：

trap
{
  Write-Verbose $_.ScriptStackTrace
  Write-Verbose "Ligne $($_.InvocationInfo.ScriptLineNumber) : $($_.exception.message)"
  Write-Verbose ([datetime]::Now)
  return
}

使用powershell 2.0版检查网站网址状态

1 个答案: