从内存中发送-MailMessage 附件

Question

我正在尝试使用我在this thread 中找到的答案（指向this URL）在 Send-MailMessage 中发送附件而不先保存到磁盘。

它说要使用：

$attachment = [System.Net.Mail.Attachment]::CreateAttachmentFromString($attachmenttext,"test.txt") 

但是当我尝试使用 Send-MailMessage 而不是它显示的复杂方式时，我得到了这个错误：

Send-MailMessage -From "email@email.com" -To "email@email.com" -Subject "Subject" -Body $body -SmtpServer "smtp.server.local" -Port 25 -BodyAsHtml -Attachments $attachment

Send-MailMessage : Could not find file 'C:\Windows\system32\System.Net.Mail.Attachment'.
At line:3 char:1
+ Send-MailMessage -From "email@email.com" -To "email@e ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Send-MailMessage], FileNotFoundException
    + FullyQualifiedErrorId : System.IO.FileNotFoundException,Microsoft.PowerShell.Commands.SendMailMessage

是否可以继续使用此方法使用 Send-MailMessage？或者有什么不同的方法可以让我在不先保存到磁盘的情况下附加文件，同时仍然使用 send-mailmessage？

Answer 1

让我先看看有什么问题。 [System.Net.Mail.Attachment]::CreateAttachmentFromString 输出类型 System.Net.Mail.Attachment 而 send-mailmessage -attachments 正在寻找字符串数组 string[]。这就是示例失败的原因。

我编写了一个简单的函数，因此您可以使用您在示例中发布的附件，该附件创建一个MailMessage 并查找[System.Net.Mail.Attachment] 类型的附件。

Function Try-SendMail([string[]]$To, [string]$From, [string]$SmtpServer, [int]$Port = 25, [pscredential]$SmtpCredential, [string]$Subject, [string]$Body, [System.Net.Mail.Attachment[]]$attachment, [switch]$IsBodyHTML){
    [System.Net.Mail.MailMessage]$Mail = new-object System.Net.Mail.MailMessage
    $To | %{$Mail.To.Add($_)}
    $Mail.From = $From
    $Mail.IsBodyHtml = $IsBodyHTML
    $Mail.Body = $Body
    $Mail.Subject = $Subject
    $Attachment | %{$mail.Attachments.Add($_)}
    [System.Net.Mail.SmtpClient]$SMTP = new-object System.Net.Mail.SmtpClient
    $SMTP.Host = $SmtpServer
    $SMTP.Port = $Port
    If($SmtpCredential){
        $NetCredential = New-Object System.Net.NetworkCredential
        $NetCredential.UserName = $SmtpCredential.GetNetworkCredential().UserName
        $NetCredential.Password = $SmtpCredential.GetNetworkCredential().Password
        $SMTP.Credentials = $NetCredential
    }
    try{
        $SMTP.Send($Mail)
    }catch{
        $_ | select *
    }
}

你可以像这样使用它

$To = @("Person1@Test.com","Person2@Test.com")
$From = "MainGuy@PErson.com"
$Server = "SMTPSERVER.NET"
$Port = 587
$Attachments = @(
    $([System.Net.Mail.Attachment]::CreateAttachmentFromString("HELLO", "Test.txt")),
    $([System.Net.Mail.Attachment]::CreateAttachmentFromString("HELLO2", "Test2.txt"))
)
$SmtpCredential = Get-Credential

Try-SendMail -to $To -From $From -Subject "Hello" -Body "World" -Attachment $Attachments -SmtpServer $Server -port $Port -SmtpCredential $SmtpCredential

*编辑忘记在函数参数中将[System.Net.Mail.Attachment]改为[System.Net.Mail.Attachment[]]