web-services - Using PowerShell to execute a dynamic WebMethod

Question

I have a nice little powershell script that works

$URL = $args[0]
$proxy = New-WebServiceProxy -Uri $URL -Namespace webservice -UseDefaultCredential
$result = $proxy.TestWebMethod()

usage from cmd: 
powershell.exe myscript.ps1 "http://somesite.com/someservice.asmx"

What I want to do is also be able to pass in the method name dynamically, something to the effect of:

$URL = $args[0]
$proxy = New-WebServiceProxy -Uri $URL -Namespace webservice -UseDefaultCredential
$result = $proxy.$args[1]

usage from cmd: 
powershell.exe myscript.ps1 "http://somesite.com/someservice.asmx" "TestWebMethod"

Is there some way to make it work dynamically the second way?

Answer 1

我没有要测试的服务，但是您尝试过invoke-expression（iex）吗？

$result = iex "`$proxy.$($args[1])()"

Answer 2

这看起来有点奇怪，但在 PowerShell V3 中你可以这样做：

$proxy | Foreach $args[1]

如果方法不带参数，你也可以这样做：

$proxy."$args[1]"

如果您对该方法有参数：

$proxy."$args[1]".Invoke(<args here>)

这是 V2 上的一个示例，它使用 Web 服务并采用 arg：

$URI = "http://www.webservicex.net/uszip.asmx?WSDL"
$zip = New-WebServiceProxy -uri $URI -namespace WebServiceProxy -class ZipClass
$method = "GetInfoByZIP"
$zip."$method".Invoke('80525')