为什么PowerShell不要想我的文件保存为CSV

Question

$Path = 'D:/ETL_Data/TwitchTVData.xlsx' 
$csvPath = 'D:/ETL_Data/TwitchTVData2.csv' 

# Open the Excel document and pull in the 'Sheet1' worksheet 
$Excel = New-Object -Com Excel.Application 
$Workbook = $Excel.Workbooks.Open($Path) 
$page = 'Sheet1' 
$ws = $Workbook.Worksheets | Where-Object {$_.Name -eq $page} 
$Excel.Visible = $true 
$Excel.DisplayAlerts = $false 

# Set variables for the worksheet cells, and for navigation 
$cells = $ws.Cells 
$row = 1 
$col = 4 
$formula = @" 
=NOW() 
"@ 

# Add the formula to the worksheet 
$range = $ws.UsedRange 
$rows = $range.Rows.Count 
for ($i=0; $i -ne $rows; $i++) { 
    $cells.Item($row, $col) = $formula 
    $row++ 
} 

$ws.Columns.Item("A:D").EntireColumn.AutoFit() | Out-Null 
$ws.Columns.Range("D1:D$rows").NumberFormat = "yyyy-MM-dd hh:mm" 

$Excel.ActiveWorkbook.SaveAs($csvPath) 
$Excel.Quit() 

[System.GC]::Collect() 
[System.GC]::WaitForPendingFinalizers() 
[System.Runtime.Interopservices.Marshal]::ReleaseComObject($excel) 

https://www.experts-exchange.com/questions/27996530/How-to-convert-and-xlsx-spreadsheet-into-CSV.html#answer38780402-20

我试图遵循，但出于某种原因，我的SaveAs()不起作用。它给了我一个错误

无法访问该文件“d：// ETL_Data/E567DF00

我有什么做的就是这在保存到CSV？

编辑：

确切错误而不FILEFORMAT参数6作为意见建议：

 
Microsoft Excel cannot access the file 'D:\//ETL_Data/8011FF00'. There are 
several possible reasons: 
o The file name or path does not exist. 
o The file is being used by another program. 
o The workbook you are trying to save has the same name as a currently open 
    workbook. 
At D:\PS_Scripts\twitchExcelAddSnapShot.ps1:32 char:1 
+ $Excel.ActiveWorkbook.SaveAs($csvPath) 
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
    + CategoryInfo   : OperationStopped: (:) [], COMException 
    + FullyQualifiedErrorId : System.Runtime.InteropServices.COMException 

精确误差FILEFORMAT参数6：

 
The file could not be accessed. Try one of the following: 
o Make sure the specified folder exists. 
o Make sure the folder that contains the file is not read-only. 
o Make sure the file name does not contain any of the following characters: 
    < > ? [ ] : | or * 
o Make sure the file/path name doesn't contain more than 218 characters. 
At D:\PS_Scripts\twitchExcelAddSnapShot.ps1:32 char:1 
+ $Excel.ActiveWorkbook.SaveAs($csvPath,6) 
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
    + CategoryInfo   : OperationStopped: (:) [], COMException 
    + FullyQualifiedErrorId : System.Runtime.InteropServices.COMException 

Answer 1

虽然PowerShell是相当宽容的时候它涉及到路径分隔符，COM +服务器（如Excel.Application）可能不是。

更改$csvPath变量值使用\而不是/：

$csvPath = 'D:\ETL_Data\TwitchTVData2.csv' 

Answer 2

要补充Mathias R. Jessen's helpful answer与背景资料：

似乎Excel的应用程序特定的行为是你问题的原因，无关t o所使用的基础子系统或API。
（Excel的自动化API恰好是一个COM服务器。）
我为什么Excel的行为这种方式目前还不清楚 - 它也这样做，在交互使用，虽然你可能会说，至少在纲领性使用也应该允许/。

为了提供广义建议：

• 在的Windows，为了安全起见，使用\，尤其是应用级自动化的API打交道时，虽然在系统API的级别/应该工作以及 - 见下文。

• 在跨平台的代码，使用/（但注意上面的例外; [System.IO.Path]::DirectorySeparatorChar报告平台的适当的（初级）字符）。

虽然很少使用，视窗在API级别允许可互换使用的\和/（这显然goes back to the DOS 2.0 days），引入了当用于目录支持），并且是也反映在更高级别的子系统，如以下示例所示。

# PS: 
# Should output c:\windows\win.ini 
(Get-Item c:/windows/win.ini).FullName 

# .NET: 
# Should return the 1st child dir.'s path. 
# Note that the child directory names will be appended with "\", not "/" 
[System.IO.Directory]::GetDirectories('c:/windows/system32') | Select-Object -First 1 

# COM: 
# Should return $true 
(New-Object -ComObject Scripting.FileSystemObject).FileExists('c:/windows/win.ini') 

# Windows API: 
# Should return a value such as 32. 
(Add-Type -PassThru WinApiHelper -MemberDefinition '[DllImport("kernel32.dll")] public static extern uint GetFileAttributes(string lpFileName);')::GetFileAttributes('c:/windows/win.ini') 

# cmd.exe 
# Note: quoting matters here, so that tokens with/aren't mistaken for options. 
# INCONSISTENT: 
#  attrib: works 
cmd /c 'attrib "c:/windows/win.ini"' 
#  dir: works with DIRECTORIES, but fails with FILES 
cmd /c 'dir /b "c:/windows/system32"' # OK 
cmd /c 'dir /b "c:/windows/win.ini"' # FAILS with 'File not found' 
cmd /c 'dir /b "c:/windows\win.ini"' # Using \ for the FILE component (only) works. 

---

这里有一个小例子演示Excel的问题/：

# Create temporary dir. 
$null = mkdir c:\tmp -force 

$xl=New-Object -Com Excel.Application 
$wb = $xl.Workbooks.Add() 

# OK - with "\" 
$wb.SaveAs('c:\tmp\t1.xlsx') 

# FAILS - with "/": 
# "Microsoft Excel cannot access the file 'C:\//tmp/F5D39400'" 
$wb.SaveAs('c:/tmp/t2.xlsx') 

$xl.Quit() 

# Clean up temp. dir.