我目前使用以下vba将12000+ xml文件导入到Excel工作簿中:
Public Sub XMLIMport()
Dim lngRow As Long
Dim strXML As String
Dim ct As Integer, XMLMap
Const maxXMLDel = 1
lngRow = 2
Do While Cells(lngRow, 1) <> ""
strXML = Cells(lngRow, 1)
ActiveWorkbook.XMLIMport url:=strXML, _
ImportMap:=Nothing, Overwrite:=False, _
Destination:=Range("$B$" & lngRow)
lngRow = lngRow + 1
For Each XMLMap In ActiveWorkbook.XmlMaps
XMLMap.Delete
Next
Loop
End Sub
,然后继续将工作簿工作表从excel导入到Access 2007中的表中。导入使用到服务器的链接下载单个文件。
因此,在A列中是xml链接,并且宏将xml数据结果放置在B,C,D等列中,并前进到下一行,并对每个文件重复该过程。但是,由于文件太多,该过程需要相当长的时间。我什至包括删除xml映射以加快过程,但是Excel 2007仍然需要花费相当长的时间才能完成该过程(超过2小时)。
我猜这个宏是否缺少我想要的更好的“优化”字词,或者还有另一种方法可以做到这一点?
更新:禁用了屏幕更新,但是在尝试删除连接时遇到错误。
运行宏记录器后,我得到了删除某些连接的以下信息,但是我不确定如何在继续下一个文件之前将其添加到上述宏中,以使其除xmlmap之外还删除连接。
Sub deleteconnection()
'
' deleteconnection Macro
'
'
ActiveWorkbook.Connections("itemResponse").Delete
ActiveWorkbook.Connections("itemResponse1").Delete
ActiveWorkbook.Connections("itemResponse10").Delete
ActiveWorkbook.Connections("itemResponse100").Delete
ActiveWorkbook.Connections("itemResponse101").Delete
ActiveWorkbook.Connections("itemResponse102").Delete
ActiveWorkbook.Connections("itemResponse103").Delete
ActiveWorkbook.Connections("itemResponse104").Delete
ActiveWorkbook.Connections("itemResponse105").Delete
ActiveWorkbook.Connections("itemResponse106").Delete
ActiveWorkbook.Connections("itemResponse107").Delete
ActiveWorkbook.Connections("itemResponse108").Delete
ActiveWorkbook.Connections("itemResponse109").Delete
ActiveWorkbook.Connections("itemResponse11").Delete
ActiveWorkbook.Connections("itemResponse110").Delete
ActiveWorkbook.Connections("itemResponse111").Delete
ActiveWorkbook.Connections("itemResponse112").Delete
ActiveWorkbook.Connections("itemResponse113").Delete
ActiveWorkbook.Connections("itemResponse114").Delete
ActiveWorkbook.Connections("itemResponse115").Delete
ActiveWorkbook.Connections("itemResponse116").Delete
ActiveWorkbook.Connections("itemResponse117").Delete
ActiveWorkbook.Connections("itemResponse118").Delete
ActiveWorkbook.Connections("itemResponse119").Delete
End Sub
编辑:尝试使用以下方法为连接添加删除项
Public Sub XMLIMport()
Dim lngRow As Long
Dim strXML As String
Dim ct As Integer, XMLMap
Dim QTable As QueryTables
'Application.ScreenUpdating = False
Const maxXMLDel = 1
lngRow = 2
Do While Cells(lngRow, 1) <> ""
strXML = Cells(lngRow, 1)
ActiveWorkbook.XMLIMport url:=strXML, ImportMap:=Nothing, Overwrite:=False, Destination:=Range("$B$" & lngRow)
lngRow = lngRow + 1
For Each XMLMap In ActiveWorkbook.XmlMaps
XMLMap.Delete
Next
For Each QTable In ActiveSheet.QueryTables
QTable.Delete
Next
Loop
'Application.ScreenUpdating = True
End Sub
导致连接仍然保留在工作簿中,并且第一个文件被重新插入
Dim Conn As Object '* connection collection
For Each Conn In ActiveWorkbook.Connections
Conn.Delete
Next Conn
从60秒导入60'000条记录x 10个字段开始
lst.XmlMap.Import "c:\data\dummy.xml"
为此不到5秒:
lst.Resize lst.Range.Resize(data.count) lst.XmlMap.Import "c:\data\dummy.xml"
因此,在导入之前对项目进行计数确实值得。我认为性能差距是由于excel在导入期间分别插入每一行所致。可能您已经具有行数,否则您可以在DomDocument中使用SelectNodes(x).length。或使用element(x).Descendents(y).Count ...