将脚本作为计划任务运行时出错“您无法在空值表达式上调用方法”

Question

此脚本在PowerShell中运行良好。但是，当我使用任务计划程序运行它时，它会失败并带有

  

您无法在PowerShell脚本上调用空值表达式上的方法。

$ErrorActionPreference = "SilentlyContinue"
$global:reports
$global:strdate
$global:ReportName
$SqlConnection = New-Object System.Data.SqlClient.SqlConnection
$SqlConnection.ConnectionString = "Server=DWPROD;Database=DP_DW;Integrated Security=True"
$SqlCmd = New-Object System.Data.SqlClient.SqlCommand
$SqlCmd.CommandText = " Select
   email = 'user@example.com'
  ,username='example\user'
  ,password='password'
  ,ReportName = 'LaborAnalysis Kronos Daily'
  ,ReportFileName = 'LaborAnalysisDaily-'
  ,ReportDate = CONVERT(varchar,getdate()-2,101)
  ,Sharepoint = 'http://intranet.shccs.com/shcsites/toolbox/D  Labor/Daily Reports/'"
$SqlCmd.Connection = $SqlConnection
$SqlAdapter = New-Object System.Data.SqlClient.SqlDataAdapter
$SqlAdapter.SelectCommand = $SqlCmd
$DataSet = New-Object System.Data.DataSet
$SqlAdapter.Fill($DataSet)
$reportinfo = $DataSet.Tables[0]
$SqlConnection.Close()

#ARRAY TO SAVE Report Criteria
$a = 0
foreach ($reportparam in $reportinfo.Rows)
{
  $ReportName = $reportparam['ReportName']
  $ReportFileName = $reportparam['ReportFileName']
  $ReportDate = $reportparam['ReportDate']
  $Sharepoint = $reportparam['Sharepoint']

  #Write-Host $ReportName + $ReportDate
  Write-Host $ReportDate
  #Write-Host $Sharepoint
  #Write-Host (Get-date).AddDays(-1)
  #Write-Host $(get-date -f yyyy-MM-dd)
  #--------------------------------------------------------------
  # report parameters
  #--------------------------------------------------------------
  $inputParams = @{
    "prmRptDate" = '11/16/2016'
  }
  #--------------------------------------------------------------
  # add assembly
  #--------------------------------------------------------------
  Add-Type -AssemblyName "Microsoft.ReportViewer.WinForms, Version=12.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91"
  #Add-Type -AssemblyName -Path 'C:\Scripts\itextsharp.dll'
  #[System.Reflection.Assembly]::LoadFrom('\\itextsharp.dll') | Out-Null
  #--------------------------------------------------------------
  # display calculated month end date
  #--------------------------------------------------------------
  $startTime = Get-Date
  Write-Host ("=" * 80)
  Write-Host "Generating Reports"
  Write-Host "Start Time: $startTime"
  Write-Host ("=" * 80)

  #--------------------------------------------------------------
  # create timestamped folder
  # where we will save our report
  #--------------------------------------------------------------
  $dt = Get-Date -Format "yyyy-MMM-dd hhmmtt"
  $rptdt = Get-Date -Format "yyyy-mm-dd"
  $baseFolder = "C:Scripts"
  Remove-Item "C:\Scripts\Labor\*"

  $rv = New-Object Microsoft.Reporting.WinForms.ReportViewer
  #--------------------------------------------------------------
  # report Server Properties
  #--------------------------------------------------------------
  $strdate = $ReportDate -replace "/", "-"
  $reports = $ReportFileName + $strdate + "pdf";

  $rv.ServerReport.ReportServerUrl = "http://dpweb01.shccs.com/ReportServer"
  $rv.ServerReport.ReportPath = "/Labor/"+ $ReportName
  $rv.ProcessingMode = "Remote"
  #Write-Host $ReportName
  #--------------------------------------------------------------
  # set up report parameters
  #--------------------------------------------------------------
  $params = $null

  #create an array based on how many incoming parameters
  $params = New-Object 'Microsoft.Reporting.WinForms.ReportParameter[]' $inputParams.Count

  $d = 0
  foreach ($p in $inputParams.GetEnumerator())
  {
    $params[$d] = New-Object Microsoft.Reporting.WinForms.ReportParameter($p.Name, $p.Value, $false)
    $d++
  }
  # set the parameters
  $rv.ServerReport.SetParameters($params)
  $rv.ShowParameterPrompts = $false
  $rv.RefreshReport()
  $rv.ServerReport.Refresh()

  #--------------------------------------------------------------
  # set rendering parameters
  #--------------------------------------------------------------
  $mimeType = $null
  $encoding = $null
  $extension = $null
  $streamids = $null
  $warnings = $null

  #--------------------------------------------------------------
  # render the SSRS report in PDF
  #--------------------------------------------------------------
  $bytes = $null
  $bytes = $rv.ServerReport.Render("PDF",
           $null,
           [ref] $mimeType,
           [ref] $encoding,
           [ref] $extension,
           [ref] $streamids,
           [ref] $warnings)

  #--------------------------------------------------------------
  # save the report to a file
  #--------------------------------------------------------------
  $fileName = "C:/Scripts/Labor/" + $reports
  $fileStream = New-Object System.IO.FileStream($fileName, [System.IO.FileMode]::OpenOrCreate)
  $fileStream.Write($bytes, 0, $bytes.Length)
  $fileStream.Close()
  $fileStream.Dispose();
  $reportdone = $reportname + " " + $(Get-Date -f yyyy-MM-dd) + ".PDF"
  #Write-Host $reportdone

  #--------------------------------------------------------------
  # Copy FIlES to Sharepoint
  #--------------------------------------------------------------
  # Set the variables
  $destination = "http://intranet.shccs.com/shcsites/toolbox/D  Labor/Daily Reports/"
  $File = Get-ChildItem "C:\Scripts\Labor"
  $FilePath = $File.FullName
  Write-Host $FilePath
  # Since we're doing this remotely, we need to authenticate
  $securePasssword = ConvertTo-SecureString "password" -AsPlainText -Force
  $credentials = New-Object System.Management.Automation.PSCredential ("example\user", $securePasssword)

  # Upload the file
  $webclient = New-Object System.Net.WebClient
  $webclient.Credentials = $credentials
  $fileupload = $destination + $File
  Write-Host $fileupload
  $webclient.UploadFile($fileupload, "PUT", $FilePath)

  #$file = "c:\Scripts\file.txt"
  #$FilePath | Add-Content -Path $file
  #$fileupload | Add-Content -Path $file
  $a++
}
Send-MailMessage -To "user <user@example.com>" -From "user <user@example.com>" -Cc "user <user@example.com>" -Subject "Daily Labor Reports are Complete" -SmtpServer "relay.example.com" -Body "Labor Reports have been uploaded"

#--------------------------------------------------------------
# LOG ERROS
#--------------------------------------------------------------
$LaborLogs = "c:\Scripts\LaborLogs.txt"
#$error[0].Exception | gm

Add-Content $LaborLogs ("=" * 80)
Add-Content $LaborLogs $startTime
Add-Content $LaborLogs $strdate
Add-Content $LaborLogs $error[0]
Add-Content $LaborLogs ("=" * 80)