轉換XLSX到CSV沒有使用Excel

Question

我獲得以下錯誤：

Cannot index into a null array. 
At C:\tmp\Folder\excel\output\net45\test.ps1:14 char:1 
+ $Data = $Reader.AsDataSet().Tables[0].Rows 
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
    + CategoryInfo : InvalidOperation: (:) [], RuntimeException 
    + FullyQualifiedErrorId : NullArray

# Zero based index. The second row has index 1. 
$StartRow = 2 
# Input File 
$InputFileName = "C:\tmp\Folder\excel\output\net20\test.xlsx" 
# Output File 
$OutputFileName = "C:\tmp\Folder\excel\output\net20\SomeFile.csv" 
# Path to Excel.dll is saved (downloaded from http://exceldatareader.codeplex.com/) 
$DllPath = "C:\tmp\Folder\excel\output\net45\Excel.4.5.dll" 

[void]([Reflection.Assembly]::LoadFrom($DllPath)) 

$Stream = New-Object IO.FileStream($InputFileName, "Open", "Read") 
$Reader = [Excel.ExcelReaderFactory]::CreateBinaryReader($Stream) 
$Data = $Reader.AsDataSet().Tables[0].Rows 

# Read the column names. Order should be preserved 
$Columns = $Data[$StartRow].ItemArray 

# Sort the remaining data into an object using the specified columns 
$Data[$($StartRow + 1)..$($Data.Count - 1)] | % { 
    # Create an object 
    $Output = New-Object Object 
    # Read each column 
    for ($i = 0; $i -lt $Columns.Count; $i++) { 
    $Output | Add-Member NoteProperty $Columns[$i] $_.ItemArray[$i] 
    } 
    # Leave it in the output pipeline 
    $Output 
} | Export-CSV $OutputFileName -NoType 

Answer 1

我以前類似的疑問，我已閱讀本"Convert XLS to CSV on command line"這"convert-xlsx-file-to-csv-using-batch"。試着看看是否有幫助。

Answer 2

您正在調用二進制方法（.xls）並使用Open XML格式文件（.xlsx）。請嘗試使用[Excel.ExcelReaderFactory]::CreateOpenXmlReader($Stream)。

這個工作對我來說：

$DllPath = 'C:\Excel.DataReader.45\Excel.4.5.dll'; 
$FilePath = 'C:\Students.xlsx'; 

$FileMode = [System.IO.FileMode]::Open; 
$FileAccess = [System.IO.FileAccess]::Read; 

Add-Type -Path $DllPath; 

$FileStream = New-Object -TypeName System.IO.FileStream $FilePath, $FileMode, $FileAccess; 

$ExcelDataReader = [Excel.ExcelReaderFactory]::CreateOpenXmlReader($FileStream); 

$ExcelDataReader.IsFirstRowAsColumnNames = $true; 

$ExcelDataSet = $ExcelDataReader.AsDataSet(); 

$ExcelDataReader.Dispose(); 
$FileStream.Close(); 
$FileStream.Dispose(); 

$ExcelDataSet.Tables | Format-Table -AutoSize 

如果你仍然有問題，你可以考慮使用Microsoft.ACE.OLEDB.12.0提供商，你從Office單獨安裝。有一些文檔here。