Send-MailMessage-Attachments不接受任何变量为空 [英] Send -MailMessage -Attachments will not accept null for any variables

问题描述

我使用的是Powershellv2.0中的Send-MailMessage函数，我使用的是附件的变量，因为并不总是发送附件。如果变量中没有附件(文件位置)，我会得到一个错误，否则它会正常工作。如何设置Send-MailMessage函数以输出附件，并在其他时间不会不失败。

Send-MailMessage -BodyAsHtml –From Monitoring@CorporateActions -Priority $Priority –To "[e-mail]" -Attachments $IDCSwiftLogFileAttachment,$SecurityLogFileAttachment, $ClientTypeLogFileAttachment –Subject "Corporate Actions Overnight Processing" –Body "<b><u> Download Status: </u></b> <br><br> $SWIFTDownloadErrorMessage $SecurityDownloadErrorMessage $ClientDownloadErrorMessage $HoldingDownloadErrorMessage $CLISLOOKDownloadErrorMessage $SWIFTDownloadSuccessMessage $SecurityDownloadSuccessMessage $ClientDownloadSuccessMessage $HoldingDownloadSuccessMessage $CLISLOOKDownloadSuccessMessage <b><u> X-Gen Processing Status: </u></b> <br><br> $SWIFTXGenNoInputMessage $SecurityXGenNoInputMessage $ClientXGenNoInputMessage $HoldingXGenNoInputMessage $CLISLOOKXGenNoInputMessage $IDCSwiftXGenSuccessMessage $SecurityXGenSuccessMessage $ClientXgenSuccessMessage $HoldingXgenSuccessMessage $ClientTypeXGenSuccessMessage $IDCSwiftXgenErrorMessage $SecurityXgenErrorMessage $ClientXgenErrorMessage $HoldingXgenErrorMessage $ClientTypeXGenErrorMessage"  –SmtpServer smtp.investmaster.com

推荐答案

您可以使用"Splat"参数：{参数名称，参数值}的散列，以避免在不需要时传递Attachments参数：

$attachments = @()
if ($IDCSwiftLogFileAttachment) {
  $attachments += $IDCSwiftLogFileAttachment
}
# Repeat for each potential parameter

$params = @{}
if ($attachments.Length -gt 0) {
  $params['Attachments'] = $attachments
}

Send-MailMessage @params -BodyAsHtml –From Monitoring@CorporateActions -Priority $Priority # Other parameters

(此使用哈希表传递参数的功能是在PowerShell V2中添加的。)

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