在PowerShell中调用函数时,无法对参数错误进行参数转换

时间:2014-04-16 09:49:18

标签: xml function powershell parameter-passing

我有一个PowerShell脚本,我在其中生成xml文件。

我的脚本如下:

$filePath= "C:\Powershell\Report.xml"
if(Test-Path $filePath)
{
    Remove-Item $filePath
} 

#set encoding
$encoding = [System.Text.Encoding]::UTF8

# Create The Document
$XmlWriter = New-Object System.XMl.XmlTextWriter($filePath,$encoding)

# Set The Formatting
$xmlWriter.Formatting = "Indented"
$xmlWriter.Indentation = "4"

# Write the XML Decleration
$xmlWriter.WriteStartDocument()

SetNamespace($xmlWriter)

# Write Root Element
$xmlWriter.WriteStartElement($RootElement)

#set Root Element namespaces
SetRootElementNamespace($xmlWriter)

#Create <my:PruefAuftragHeader>

$Ablagenummer = "234"
$Beschrieb = "This is testing"
$Auftraggeber = @("ADAMS","Alu König Stahl","Caradon")

CreatePruefAuftragHeader($xmlWriter ,$Ablagenummer)



Function CreatePruefAuftragHeader([System.Xml.XmlTextWriter] $xmlWriter ,[String] $Ablagenummer)
{
    $xmlWriter.WriteStartElement($PruefAuftragHeaderElement) # opening <my:PruefAuftragHeader>

    $xmlWriter.WriteElementString($AblagenummerElement,$Ablagenummer)
    $xmlWriter.WriteElementString($BeschriebElement,$Beschrieb)

    foreach($elem in $Auftraggeber)
    {
        $xmlWriter.WriteElementString($AuftraggeberElement,$elem)
    }

    $xmlWriter.WriteEndElement #closing <my:PruefAuftragHeader>
}

当执行到达行CreatePruefAuftragHeader($xmlWriter ,$Ablagenummer)时,它会抛出错误:Cannot process argument transformation on parameter 'xmlWriter'. Cannot convert the "System.Object[]" value of type "System.Object[]" to type "System.Xml.XmlTextWriter".

我该怎么做才能解决错误?

1 个答案:

答案 0 :(得分:2)

如果你这样调用脚本:

CreatePruefAuftragHeader($xmlWriter ,$Ablagenummer)

您将第一个参数作为数组类型传递

你必须这样称呼它:

CreatePruefAuftragHeader $xmlWriter $Ablagenummer

在powershell中,脚本/函数的参数由空格分开传递,而不是包含在()中。