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循環瀏覽網路查詢的巨集 - 不斷轟炸

tag-icon • tag-icon microsoft-excel vba macros
循環瀏覽網路查詢的巨集 - 不斷轟炸

我已經建立了一個宏，旨在循環遍歷股票行情並在一個列中，並使用網路查詢從雅虎財經提取這些股票行情的數據

對於 10、15、20 個 Web 查詢，它運作良好，但在前 20 或 30 個 Web 查詢中的某個時刻，它毫無失敗地轟炸了 excel

我首先要說的是，我是 VBA 程式碼的極端業餘愛好者，但我嘗試了一些方法來解決這個問題（清除快取、使用暫停），但它們似乎不起作用。

它不會每次都在同一專案上失敗，但狀態欄中總是有「連接到網路」文本，所以我覺得它與連接超時有關，但我不確定此時如何攻擊它。歡迎任何想法，以及我可能缺少的任何程式碼優化..謝謝！

Sub GetData()

    Application.Calculation = xlManual

     ' make the website a variable
    Dim sURL As String
    Dim Ticker As String
    Dim iRow As Integer
    Dim iCol As Integer
    Dim wqError As ErrObject

     ' create web query if it doesn't exist

    If Worksheets("query").QueryTables.Count = 0 Then
        With Worksheets("query").QueryTables.Add(Connection:="URL;", Destination:=Range("Query!A1"))
            .Name = "market_data.asp"
            .FieldNames = True
            .RowNumbers = False
            .FillAdjacentFormulas = False
            .PreserveFormatting = True
            .RefreshOnFileOpen = False
            .BackgroundQuery = False
            .RefreshStyle = xlInsertDeleteCells
            .SavePassword = False
            .SaveData = True
            .AdjustColumnWidth = True
            .RefreshPeriod = 0
            .WebSelectionType = xlSpecifiedTables
            .WebFormatting = xlWebFormattingNone
            .WebTables = "4"
            .WebPreFormattedTextToColumns = True
            .WebConsecutiveDelimitersAsOne = True
            .WebSingleBlockTextImport = False
            .WebDisableDateRecognition = False
            .WebDisableRedirections = False
        End With
    End If

    iRow = 2
    iCol = 2

     'Loop through Tickers

    Do While Worksheets("Data").Range("A" & iRow).Value <> ""

            Ticker = Worksheets("Data").Range("A" & iRow).Value
            sURL = "http://finance.yahoo.com/q?s=" & Ticker

            With Worksheets("query")
                .Cells.Clear
                .QueryTables(1).Connection = "URL;" & sURL
                On Error Resume Next
                .QueryTables(1).Refresh BackgroundQuery:=False
                Set wqError = Err
                On Error GoTo 0

                If wqError.Number = 0 Then 'No error

                    .Range("B1").Copy Worksheets("Data").Cells(iRow, iCol)
                    .Range("B5").Copy Worksheets("Data").Cells(iRow, iCol + 1)
                    .Range("B13:B14").Copy Worksheets("Data").Cells(iRow, iCol + 2)
                    .Range("B18").Copy Worksheets("Data").Cells(iRow, iCol + 4)
                    .Range("B15").Copy Worksheets("Data").Cells(iRow, iCol + 5)
                    .Range("B22").Copy Worksheets("Data").Cells(iRow, iCol + 6)
                    .Range("B16").Copy Worksheets("Data").Cells(iRow, iCol + 7)
                    .Range("B20").Copy Worksheets("Data").Cells(iRow, iCol + 8)
                    .Range("B19").Copy Worksheets("Data").Cells(iRow, iCol + 9)
                    .Range("B25").Copy Worksheets("Data").Cells(iRow, iCol + 10)
                    .Range("B24").Copy Worksheets("Data").Cells(iRow, iCol + 11)

                ElseIf wqError.Number <> 1004 Then

                     'Report error because it isn't the expected error 1004 Web query returned no data

                    MsgBox "Web query refresh for " & String(2, vbCrLf) & sURL & String(2, vbCrLf) & " returned error number " & wqError.Number & String(2, vbCrLf) & wqError.Description

                End If

            End With

        iRow = iRow + 1
        If iRow Mod 5 = 0 Then Delete_IE_Cache
        If iRow Mod 20 = 0 Then ActiveWorkbook.Save
        If iRow Mod 20 = 0 Then Application.Wait (Now + TimeValue("0:00:03"))

    Loop

     'Format results

    With Sheets("data")
    Range("A:M").HorizontalAlignment = xlCenter
    Range("A:A").NumberFormat = "Text"
    Range("D:D").NumberFormat = "Text"
    Range("I:I").NumberFormat = "Text"
    Range("B:C").NumberFormat = "0.00"
    Range("E:H").NumberFormat = "0.00"
    Range("K:M").NumberFormat = "0.00"
    End With

    Application.Calculation = xlCalculationAutomatic

End Sub

答案1

我沒有看到任何等待頁面完成加載的程式碼...可能沒有必要，但是將其放在模組的頂部，然後在導航到網站+stockticker 後調用它也沒有什麼壞處。

Private Declare Sub AppSleep Lib "kernel32" Alias "Sleep" (ByVal dwMilliseconds As Long)
Public Sub PauseApp(PauseInSeconds As Long)
Call AppSleep(PauseInSeconds)
End Sub

然後在你的程式碼中，

sURL = "http://finance.yahoo.com/q?s=" & Ticker 
Call sleepie(sURL)

就像我說的，它可能根本無法解決您的問題，但絕對會有所幫助。

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