powershell - 找不到类型[System.Net.Webutility]

Question

我正在尝试在Windows 2008 Server上运行脚本，但是不确定是否可以运行它。我收到以下错误消息:
Unable to find type [System.Net.Webutility]: make sure that the assembly containing this type is loaded.
如前所述，我试图在2008 Server上运行它。根据System.Net.Webutility文档，自Windows 8开始提供。是SOL还是可以解决？

下面是我的代码:

#account of the Shared Mailbox
$account = "MyAccount@myaddress.com"

#date to append to new file name
$date = Get-Date -Format yyyyMMdd

#Formatted date to search Inbox
$searchDate = Get-Date -Format M/dd/yyyy
Write-Host "Searching for $searchDate..."

#file to save attachment as
$newFileName = "Record_Import_$date.html"

#file name for the XML File
$newXMLFileName = "Record_Import_$date.xml"

#File paths Main directory, HTML, HTML Record and Raw folders
$newFilePath = "\\PathA\"
$newHTMLPath = "\\PathB\"
$newHTMLRecordPath = "\\PathC\"
$rawFilePath = "\\PathD\"

#Go into Outlook and get the MAPI
$mail = New-Object -ComObject outlook.application
$mailNS = $mail.GetNamespace("MAPI")

#print out Accounts in MAPI
foreach($email in $mailNS.Folders)
{
    Write-Host $email.Name
}

Write-Host "---"

#get the account and Inbox we want
$myAcount = $mailNS.Folders | ? {$_.Name -eq $account}

#Print out folders in Shared Inbox
foreach($folder in $myAcount.Folders)
{
    Write-Host $folder.Name
}

#Get the inbox of the account
$myInbox = $myAcount.Folders | ? {$_.Name -eq "Inbox"};

#loop through the Inbox and get any Attachments with the extension of ".EXCEL"
foreach ($f in $myInbox)
{
    foreach($i in $f.Items)
    {

        if($i.ReceivedTime.Date -eq $searchDate)
        {

            Write-Host "---"
            Write-Host "Checking "$i.Subject"..."
            Write-Host "---"

            foreach($a in $i.Attachments)
            {
                if($a.FileName -like "*.MYFILETYPE")
                {
                    #Move the attachment to the desired directory and save the raw file in the Raw directory
                    $a.SaveAsFile((Join-Path $newHTMLPath $newFileName))
                    $a.SaveAsFile((Join-Path $rawFilePath $a.FileName))
                    Write-Host $a.FileName " Saved as HTML"

                    #Open the HTML file and parse it
                    $htmlString = Get-Content (Join-Path $newHTMLPath $newFileName)
                    [xml]$html = [System.Net.WebUtility]::HtmlDecode($htmlString);

                    #Get the date of the HTML File
                    $dateSpan = $html.DocumentElement.SelectSingleNode('//tr[2]/td[2]').InnerText

                    #Reset the newXMLFileName and newFileName variables to include the new date
                    $newXMLFileName = "BAI_Import_$dateSpan.xml"
                    $newFileName = "BAI_Import_$dateSpan.html"
                    $a.SaveAsFile((Join-Path $newHTMLRecordPath $newFileName))

                    Write-Host "Date for XML is $dateSpan"

                    $xml = @'
<?xml version="1.0" encoding="utf-8" ?>
<Date>
'@;
                    $xml = $xml += $dateSpan 
                    $xml = $xml += @'
</Date>
<Cash Activities>

'@;
                    $rows = $html.DocumentElement.SelectNodes('//tr');
                    $pastVariance = $false
                    foreach ($row in $rows) 
                    {
                        if ($row.GetAttribute('class') -eq 'c12') 
                        {
                            $xml += "`t<Cash Activity>`n";
                            $spans = $row.SelectNodes('.//descendant::span[@class]');
                            if ($spans.Count -eq 2) 
                            {
                                $spanCheck = $spans[0].InnerText.Trim();
                                Write-Host $spanCheck

                                if($pastVariance)
                                {
                                    $xml += "`t`t<Activity>Unknown Cash Activity</Activity>`n";
                                } Else 
                                {
                                    $xml += "`t`t<Activity>$($spans[0].InnerText.Trim())</Activity>`n"; 
                                }
                                $xml += "`t`t<Balance>$($spans[1].InnerText.Trim())</Balance>`n"; 

                                #check to make sure that this line was a Variance
                                if($spanCheck -match "Variance")
                                {
                                    $pastVariance = $true
                                }

                            }
                            $xml += "`t</Cash Activity>`n";
                        }
                    }


                    $xml += @'
</Cash Activities>
'@;
                    Write-Host $xml
                    $xml | Out-File (Join-Path $newFilePath $newXMLFileName)
                    Write-Host $i.Subject " Exported to XML File"
                }#End of EXCEL Check
            }
        }

    }
} 

Answer 1

自 .NET Framework 1.1 之后，就可以使用System.Web.HttpUtility.HtmlDecode了，因此您可以选择完成以下相同的操作:

Add-Type -AssemblyName System.Web;

$encoded = '<span class="c2">FRIDAY&nbsp;&nbsp;</span>';
[System.Web.HttpUtility]::HtmlDecode($encoded);