EXCEL-VBA。获取单元格值作为键值对

Question

我正在尝试从“I”列的 excel 单元格中获取地址值，并将其作为查询字符串传递给使用 VBA 的 URL。已在 excel 中嵌入“Microsoft 对象浏览器”以加载页面。

这甚至可能吗？因为我担心作为查询字符串传递的数据量太高（大约 1000 行）。

虽然代码不起作用，有什么方法可以通过将查询字符串作为数组传递来做同样的事情吗？

我还需要 VBA 语法来解析字典值。

我是 VBA 新手。请帮忙。

    Dim Arr() As Variant ' declare an unallocated array.
Arr = Range("I:I") ' Arr is now an allocated array
Set dict = CreateObject("Scripting.Dictionary")
Dim iRow As Integer
iRow = 1
 Dim parms As Variant
   Dim rg As Range
    For Each rg In Sheet1.Range("I:I")
        ' Print address of cells that are negative
        'MsgBox (rg.Value)
         'result = result & rg.Value
          dict.Add rg.Value
          iRow = (iRow + 1)        
    Next
MsgBox (dict.Item(1))
Set dict = Nothing
'WebBrowser1.Navigate2 "http://localhost/excelmaps/maps.php?adr=" & parms
End Sub

Answer 1

发生了很多事情，所以我将尝试解决字典部分，因为那是您标记的内容。

首先用字典，你可以添加一个项目如下：

dict(“your key”) = “your value”

我看到您已正确设置字典，并且始终确保在运行代码之前在 VBA 编辑器中添加字典引用（转到工具->引用-> Microsoft 脚本运行时）。

在这种情况下，您的键值似乎是增量整数。那么为什么不直接使用数组呢，如下面的代码呢？

另一个问题是循环整个列（所有 > 100 万行）会产生溢出错误。也许开始手动指定要在 for 循环中循环的行（参见“rowsToLoop”变量）：

Sub der()

Dim rowsToLoop As Integer
rowsToLoop = 1000

Dim Arr() As Variant 'define empty array
ReDim Arr(rowsToLoop) 'redefine with variable length

Dim dict As Dictionary
Set dict = CreateObject("Scripting.Dictionary")

Dim x As Integer

For x = 1 To rowsToLoop

    'With an array
    Arr(x - 1) = Sheet1.Range("I1").Cells(x, 1).Value 'note array index starts at 0

    'With a dictionary
    dict(x - 1) = Sheet1.Range("I1").Cells(x, 1).Value
Next x

MsgBox "This is from array: " & Arr(1)
MsgBox "This is from dictionary: " & dict(1)

End Sub

Answer 2

好像 IE 的最大 URL 长度是 2083 个字符：

https://support.microsoft.com/en-us/kb/208427

要构建查询，我将使用字符串构建器（“System.Text.StringBuilder”）。 您还需要对所有参数进行 URL 编码。

这是一个使用范围 [A1:B10] 中的名称/值构建 url 的示例：

Sub BuildURL
  ' Read the names/values from a sheet
  Dim names_values()
  names_values = [A1:B10].Value2

  ' Create a string builder
  Dim sb As Object
  Set sb = CreateObject("System.Text.StringBuilder")
  sb.Append_3 "http://localhost/excelmaps/maps.php"

  ' Build the query
  Dim i&, name$, value$
  For i = 1 To UBound(names_values)
    name = names_values(i, 1)
    value = names_values(i, 2)

    If i = 1 Then sb.Append_3 ("?") Else sb.Append_3 ("&")
    sb.Append_3 URLEncode(name) ' Adds the name
    sb.Append_3 "="
    sb.Append_3 URLEncode(value) ' Adds the value
  Next

  ' Print the result
  Debug.Print sb.ToString()
End Sub


Public Function URLEncode(url As String, Optional space_to_plus As Boolean) As String
  Static ToHex(15), IsLiteral%(127), buffer() As Byte, bufferCapacity&
  Dim urlBytes() As Byte, bufferLength&, i&, u&, b&, space&

  If space_to_plus Then space = 32 Else space = -1
  If bufferCapacity = 0 Then GoSub InitializeOnce
  urlBytes = url

  For i = 0 To UBound(urlBytes) Step 2
    If bufferLength >= bufferCapacity Then GoSub IncreaseBuffer

    u = urlBytes(i) + urlBytes(i + 1) * 256&
    If u And -128 Then    ' U+0080 to U+1FFFFF '
      If u And -2048 Then ' U+0800 to U+1FFFFF '
        If (u And 64512) - 55296 Then ' U+0800 to U+FFFF '
          b = 224 + (u \ 4096):       GoSub WriteByte
          b = 128 + (u \ 64 And 63&): GoSub WriteByte
          b = 128 + (u And 63&):      GoSub WriteByte
        Else  ' surrogate  U+10000 to U+1FFFFF '
          i = i + 2
          u = ((urlBytes(i) + urlBytes(i + 1) * 256&) And 1023&) _
            + &H10000 + (u And 1023&) * 1024&
          b = 240 + (u \ 262144):       GoSub WriteByte
          b = 128 + (u \ 4096 And 63&): GoSub WriteByte
          b = 128 + (u \ 64 And 63&):   GoSub WriteByte
          b = 128 + (u And 63&):        GoSub WriteByte
        End If
      Else ' U+0080 to U+07FF '
        b = 192 + (u \ 64):    GoSub WriteByte
        b = 128 + (u And 63&): GoSub WriteByte
      End If
    ElseIf IsLiteral(u) Then  ' unreserved ascii character '
      buffer(bufferLength) = u
      bufferLength = bufferLength + 2
    ElseIf u - space Then  ' reserved ascii character '
      b = u: GoSub WriteByte
    Else  ' space character '
      buffer(bufferLength) = 43   ' convert space to +  '
      bufferLength = bufferLength + 2
    End If
  Next

  URLEncode = LeftB$(buffer, bufferLength)
  Exit Function

WriteByte:
  buffer(bufferLength) = 37  '%
  buffer(bufferLength + 2) = ToHex(b \ 16)
  buffer(bufferLength + 4) = ToHex(b And 15&)
  bufferLength = bufferLength + 6
  Return
IncreaseBuffer:
  bufferCapacity = UBound(buffer) * 2
  ReDim Preserve buffer(bufferCapacity + 25)
  Return
InitializeOnce:
  bufferCapacity = 2048
  ReDim buffer(bufferCapacity + 25)
  For i = 0 To 9:    ToHex(i) = CByte(48 + i): Next  '[0-9]'
  For i = 10 To 15:  ToHex(i) = CByte(55 + i): Next '[A-F]'
  For i = 48 To 57:  IsLiteral(i) = True:  Next '[0-9]'
  For i = 65 To 90:  IsLiteral(i) = True:  Next '[A-Z]'
  For i = 97 To 122: IsLiteral(i) = True:  Next '[a-z]'
  IsLiteral(45) = True  ' - '
  IsLiteral(46) = True  ' . '
  IsLiteral(95) = True  ' _ '
  IsLiteral(126) = True ' ~ '
  Return
End Function