如何在 VBA (Excel) 中保存没有 BOM 编码的 UTF-8 文本文件 (CSV)？

Question

所以这是我最初的问题。下面我的问题的答案似乎是获得 UTF-8（和没有 BOM 的 UTF-8）编码的唯一解决方案是使用 ADODB.Stream 对象。
主题行中我的新问题的答案作为代码发布。

我坐在这里并尝试将SaveExcel 工作表作为.CSV带有 VBA 宏的文件。
但是，我想知道是使用ADODB/ADODB.Stream还是仅使用.SaveAs Fileformat:=xlCSV. 我试图用谷歌搜索它，似乎我找不到哪种方法是“最好的”的答案。我需要它以逗号分隔、UTF-8 和双引号 ("") 作为文本标识符。

是否正确，当您使用时Fileformat:=，不可能使用SaveAsUTF-8，因为xlCSV是不是使用那种编码？ 对，那是正确的。

请参阅我的答案以获取解决方案。

Answer 1

所以我遇到了再次需要这段代码的情况，我阅读了评论和伦纳德的答案，这使我更新了我的代码以及更好的描述。

此代码将转换您的 Excel 工作表并将其保存为使用 UTF-8 无 BOM 编码的 CSV 文件。我在网站上找到了此代码，因此我不会将其归功于它。没有 BOM 链接的 CSV

Option Explicit

Sub CSVFileAsUTF8WithoutBOM()
Dim SrcRange As Range
Dim CurrRow As Range
Dim CurrCell As Range
Dim CurrTextStr As String
Dim ListSep As String
Dim FName As Variant
Dim UTFStream As Object
Dim BinaryStream As Object

' ADO Constants
Const adTypeBinary = 1 ' The stream contains binary data
Const adTypeText = 2 ' The stream contains text data (default)
Const adWriteLine = 1 ' write text string and a line separator (as defined by the LineSeparator property) to the stream.
Const adModeReadWrite = 3 ' Read/write
Const adLF = 10 ' Line feed only - default is carriage return line feed (adCRLF)
Const adSaveCreateOverWrite = 2 ' Overwrites the file with the data from the currently open Stream object, if the file already exists

' Open this workbook location
ChDrive Left(ThisWorkbook.Path, 1)
ChDir ThisWorkbook.Path

' ask for file name and path
  FName = Application.GetSaveAsFilename("", "CSV File (*.csv), *.csv")

' prepare UTF-8 stream
  Set UTFStream = CreateObject("adodb.stream")
  UTFStream.Type = adTypeText
  UTFStream.Mode = adModeReadWrite
  UTFStream.Charset = "UTF-8"
  UTFStream.LineSeparator = adLF
  UTFStream.Open

  'set field separator
  ListSep = ";"
  'set source range with data for csv file
  If Selection.Cells.Count > 1 Then
    Set SrcRange = Selection
  Else
    Set SrcRange = ActiveSheet.UsedRange
  End If

  For Each CurrRow In SrcRange.Rows
    'enclose each value with quotation marks and escape quotation marks in values
    CurrTextStr = ""
    For Each CurrCell In CurrRow.Cells
      CurrTextStr = CurrTextStr & """" & Replace(CurrCell.Value, """", """""") & """" & ListSep
    Next
    'remove ListSep after the last value in line
    While Right(CurrTextStr, 1) = ListSep
      CurrTextStr = Left(CurrTextStr, Len(CurrTextStr) - 1)
    Wend
    'add line to UTFStream
    UTFStream.WriteText CurrTextStr, adWriteLine ' Writes character data to a text Stream object
  Next

  'skip BOM
  UTFStream.Position = 3 ' sets or returns a long value that indicates the current position (in bytes) from the beginning of a Stream object

  'copy UTFStream to BinaryStream
  Set BinaryStream = CreateObject("adodb.stream")
  BinaryStream.Type = adTypeBinary
  BinaryStream.Mode = adModeReadWrite
  BinaryStream.Open ' Opens a Stream object

  'Strips BOM (first 3 bytes)
  UTFStream.CopyTo BinaryStream ' Copies a specified number of characters/bytes from one Stream object into another Stream object

  UTFStream.Flush ' Sends the contents of the Stream buffer to the associated underlying object
  UTFStream.Close ' Closes a Stream object

  'save to file
  BinaryStream.SaveToFile FName, adSaveCreateOverWrite
  BinaryStream.Flush ' Sends the contents of the Stream buffer to the associated underlying object
  BinaryStream.Close ' Closes a Stream object

End Sub