excel - 从url下载图片并保存到以单元格命名的文件夹中

Question

我有一个包含文件夹名称、图像名称和 URL 的工作表。我想将每个图像下载到特定文件夹，以便结果如下所示:

Folder Name   Image Name     URL
-----------   ------------   -----------------------------------
folder1      image1         http://www.example.com/example1.jpg
folder2      image2         http://www.example.com/example2.jpg
folder3      image3         http://www.example.com/example3.jpg
folder4      image4         http://www.example.com/example4.jpg
folder5      image5         http://www.example.com/example5.jpg

C:\images\folder1\image1.jpg
C:\images\folder2\image2.jpg
C:\images\folder3\image3.jpg
C:\images\folder4\image4.jpg
C:\images\folder5\image5.jpg

我找到了这个 VBA 代码，它的工作方式就像一个魅力，但我不知道如何添加一个方法来创建文件夹(如果文件夹不存在):

Option Explicit

Private Declare Function URLDownloadToFile Lib "urlmon" _
Alias "URLDownloadToFileA" (ByVal pCaller As Long, _
ByVal szURL As String, ByVal szFileName As String, _
ByVal dwReserved As Long, ByVal lpfnCB As Long) As Long

Dim Ret As Long

'~~> This is where the images will be saved. Change as applicable
Const FolderName As String = "C:\Temp\"

Sub Sample()
    Dim ws As Worksheet
    Dim LastRow As Long, i As Long
    Dim strPath As String

    '~~> Name of the sheet which has the list
    Set ws = Sheets("Sheet1")

    LastRow = ws.Range("A" & Rows.Count).End(xlUp).Row

    For i = 2 To LastRow '<~~ 2 because row 1 has headers
        strPath = FolderName & ws.Range("A" & i).Value & ".jpg"

        Ret = URLDownloadToFile(0, ws.Range("B" & i).Value, strPath, 0, 0)

        If Ret = 0 Then
            ws.Range("C" & i).Value = "File successfully downloaded"
        Else
            ws.Range("C" & i).Value = "Unable to download the file"
        End If
    Next i
End Sub

Answer 1

以下将确定文件夹是否存在，如果不存在，则创建它:

If Len(Dir(FolderName, vbDirectory)) = 0 Then
   MkDir FolderName
End If

修改自 here

对于更高级的内容，我建议使用 FileSystemObject 类。