在VBA中下载文件并存储它

Question

我需要下载一个从REST搜索中获取的文件.URL如下所示:

HTTPS://abc.def/geh/servlet/rest/vault OID = XXX&EXPR = files.file1

(由于隐私原因我需要编辑它..)

该文件应该是Nastran计算的结果,可以通过简单的Texteditor查看.扩展名为.pch,相对较大(~21mb)

如何在VBA中实现？

Answer 1

首先 - 链接不起作用.第二个:根据HTTP请求的输出,可以有2种方法.

如果输出是文件,您可以使用以下代码:

Sub DownloadFile(url As String, filePath As String)

    Dim WinHttpReq As Object, attempts As Integer
    attempts = 3
    On Error GoTo TryAgain
TryAgain:
    attempts = attempts - 1
    Err.Clear
    If attempts > 0 Then
        Set WinHttpReq = CreateObject("Microsoft.XMLHTTP")
        WinHttpReq.Open "GET", url, False
        WinHttpReq.send

        If WinHttpReq.Status = 200 Then
            Set oStream = CreateObject("ADODB.Stream")
            oStream.Open
            oStream.Type = 1
            oStream.Write WinHttpReq.responseBody
            oStream.SaveToFile filePath, 2 ' 1 = no overwrite, 2 = overwrite
            oStream.Close
        End If
    End If
End Sub

如果输出是简单的文本HTML响应,则可以将输出保存到文件中

Function GetXMLHTTPResult(url As String)
    Dim XMLHTTP As Object, attempts As Integer
    attempts = 3
    On Error GoTo TryAgain
TryAgain:
    attempts = attempts - 1
    Err.Clear
    If attempts > 0 Then
        Set XMLHTTP = CreateObject("MSXML2.serverXMLHTTP")
        XMLHTTP.Open "GET", url, False
        XMLHTTP.setRequestHeader "Content-Type", "text/xml"
        XMLHTTP.setRequestHeader "Cache-Control", "no-cache"
        XMLHTTP.setRequestHeader "Pragma", "no-cache"
        XMLHTTP.setRequestHeader "User-Agent", "Mozilla/5.0 (Windows NT 6.1; rv:25.0) Gecko/20100101 Firefox/25.0"
        XMLHTTP.send
        GetXMLHTTPResult = XMLHTTP.ResponseText
    End If
End Function
Sub SaveFile(url)
        res = GetXMLHTTPResult(url)
        Open "C:\res.txt" For Output As #1
        Write #1, res
        Close #1
End Sub