Powershell不会从NewWebServiceProxy捕获异常

Question

我从NewWebServiceProxy cmdlet捕获异常时遇到问题

try {
    $myService = New-WebServiceProxy -Uri "http://localhost/someservice.svc"
}
catch {
    Write-Log ([string]::Format("Error : {0}", $_.Exception.Message))
}

当我运行它时,我得到了这个未处理的异常:New-WebServiceProxy:

请求失败,HTTP状态为404:未找到.在C:\ Users\SomeUser\AppData\Local\Temp\d052b604-38ad-4827-b952-4ebc66e79c69.ps1:2 char:18 + $ myService = New-WebServiceProxy -Uri "http://localhost/someservice.svc" + ~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ CategoryInfo:ObjectNotFound :( http://localhost/someservice.svc:Uri)[New-WebServiceProxy],WebExc eption + FullyQualifiedErrorId:WebException,Microsoft.PowerShell.Commands.NewWebServiceProxy

有人可能会问我为什么尝试捕获不捕获此异常？谢谢你的任何aswer

Answer 1

这是在PowerShell中捕获未处理的异常时最常见的问题之一.您需要-ErrorAction Stop在命令中使用New-WebServiceProxy

try {
    $myService = New-WebServiceProxy -Uri "http://localhost/someservice.svc" -ErrorAction Stop
}
catch [System.Net.WebException]{
    Write-Log ([string]::Format("Error : {0}", $_.Exception.Message))
}

更新:为了赶上HTTP异常包括[System.Net.WebException]如指出基思·希尔在下面的评论.