如何分析XML使用vba
https://stackoverflow.com/questions/11305
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08-06-2019 - |
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我工作在VBA，并要分析一串例如：
<PointN xsi:type='typens:PointN'
xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'
xmlns:xs='http://www.w3.org/2001/XMLSchema'>
<X>24.365</X>
<Y>78.63</Y>
</PointN>
和帮X和Y值为两个单独整数的变量。
我是个新手的时候到XML，因为我被困在维生素b6，随时随地！，因为该领域的我的工作。
我该怎么做这个？
解决方案
这是一个复杂的问题，但这似乎是最直接的路线将被装载在XML文件或XML string通过MSXML2.DOMDocument然后将允许访问XML节点。
你可以找到更多的关MSXML2.DOMDocument在下列网站：
其他提示
谢谢你的指针。
我不知道，这是否是最好的方法问题或者没有，但这里是我怎么拿到它的工作。我引用Microsoft XML、v2。6dll在我VBA，然后下列代码段，给了我所需要的价值观
Dim objXML As MSXML2.DOMDocument
Set objXML = New MSXML2.DOMDocument
If Not objXML.loadXML(strXML) Then 'strXML is the string with XML'
Err.Raise objXML.parseError.ErrorCode, , objXML.parseError.reason
End If
Dim point As IXMLDOMNode
Set point = objXML.firstChild
Debug.Print point.selectSingleNode("X").Text
Debug.Print point.selectSingleNode("Y").Text
添加参考项目>引用Microsoft XML，6.0和可以使用示例的代码:
Dim xml As String
xml = "<root><person><name>Me </name> </person> <person> <name>No Name </name></person></root> "
Dim oXml As MSXML2.DOMDocument60
Set oXml = New MSXML2.DOMDocument60
oXml.loadXML xml
Dim oSeqNodes, oSeqNode As IXMLDOMNode
Set oSeqNodes = oXml.selectNodes("//root/person")
If oSeqNodes.length = 0 Then
'show some message
Else
For Each oSeqNode In oSeqNodes
Debug.Print oSeqNode.selectSingleNode("name").Text
Next
End If
小心xml node//Root/人是不同//root/人也selectSingleNode("Name").案文是不相同的与selectSingleNode("name").文本
你可以使用一个XPath查询:
Dim objDom As Object '// DOMDocument
Dim xmlStr As String, _
xPath As String
xmlStr = _
"<PointN xsi:type='typens:PointN' " & _
"xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' " & _
"xmlns:xs='http://www.w3.org/2001/XMLSchema'> " & _
" <X>24.365</X> " & _
" <Y>78.63</Y> " & _
"</PointN>"
Set objDom = CreateObject("Msxml2.DOMDocument.3.0") '// Using MSXML 3.0
'/* Load XML */
objDom.LoadXML xmlStr
'/*
' * XPath Query
' */
'/* Get X */
xPath = "/PointN/X"
Debug.Print objDom.SelectSingleNode(xPath).text
'/* Get Y */
xPath = "/PointN/Y"
Debug.Print objDom.SelectSingleNode(xPath).text
这是一个例子：尽快解析工作与FeedDemon享受完全的文件：
Sub debugPrintOPML()
' http://msdn.microsoft.com/en-us/library/ms763720(v=VS.85).aspx
' http://msdn.microsoft.com/en-us/library/system.xml.xmlnode.selectnodes.aspx
' http://msdn.microsoft.com/en-us/library/ms256086(v=VS.85).aspx ' expressions
' References: Microsoft XML
Dim xmldoc As New DOMDocument60
Dim oNodeList As IXMLDOMSelection
Dim oNodeList2 As IXMLDOMSelection
Dim curNode As IXMLDOMNode
Dim n As Long, n2 As Long, x As Long
Dim strXPathQuery As String
Dim attrLength As Byte
Dim FilePath As String
FilePath = "rss.opml"
xmldoc.Load CurrentProject.Path & "\" & FilePath
strXPathQuery = "opml/body/outline"
Set oNodeList = xmldoc.selectNodes(strXPathQuery)
For n = 0 To (oNodeList.length - 1)
Set curNode = oNodeList.Item(n)
attrLength = curNode.Attributes.length
If attrLength > 1 Then ' or 2 or 3
Call processNode(curNode)
Else
Call processNode(curNode)
strXPathQuery = "opml/body/outline[position() = " & n + 1 & "]/outline"
Set oNodeList2 = xmldoc.selectNodes(strXPathQuery)
For n2 = 0 To (oNodeList2.length - 1)
Set curNode = oNodeList2.Item(n2)
Call processNode(curNode)
Next
End If
Debug.Print "----------------------"
Next
Set xmldoc = Nothing
End Sub
Sub processNode(curNode As IXMLDOMNode)
Dim sAttrName As String
Dim sAttrValue As String
Dim attrLength As Byte
Dim x As Long
attrLength = curNode.Attributes.length
For x = 0 To (attrLength - 1)
sAttrName = curNode.Attributes.Item(x).nodeName
sAttrValue = curNode.Attributes.Item(x).nodeValue
Debug.Print sAttrName & " = " & sAttrValue
Next
Debug.Print "-----------"
End Sub
这个需要多层次的树木的文件夹(Awasu,NewzCrawler):
...
Call xmldocOpen4
Call debugPrintOPML4(Null)
...
Dim sText4 As String
Sub debugPrintOPML4(strXPathQuery As Variant)
Dim xmldoc4 As New DOMDocument60
'Dim xmldoc4 As New MSXML2.DOMDocument60 ' ?
Dim oNodeList As IXMLDOMSelection
Dim curNode As IXMLDOMNode
Dim n4 As Long
If IsNull(strXPathQuery) Then strXPathQuery = "opml/body/outline"
' http://msdn.microsoft.com/en-us/library/ms754585(v=VS.85).aspx
xmldoc4.async = False
xmldoc4.loadXML sText4
If (xmldoc4.parseError.errorCode <> 0) Then
Dim myErr
Set myErr = xmldoc4.parseError
MsgBox ("You have error " & myErr.reason)
Else
' MsgBox xmldoc4.xml
End If
Set oNodeList = xmldoc4.selectNodes(strXPathQuery)
For n4 = 0 To (oNodeList.length - 1)
Set curNode = oNodeList.Item(n4)
Call processNode4(strXPathQuery, curNode, n4)
Next
Set xmldoc4 = Nothing
End Sub
Sub processNode4(strXPathQuery As Variant, curNode As IXMLDOMNode, n4 As Long)
Dim sAttrName As String
Dim sAttrValue As String
Dim x As Long
For x = 0 To (curNode.Attributes.length - 1)
sAttrName = curNode.Attributes.Item(x).nodeName
sAttrValue = curNode.Attributes.Item(x).nodeValue
'If sAttrName = "text"
Debug.Print strXPathQuery & " :: " & sAttrName & " = " & sAttrValue
'End If
Next
Debug.Print ""
If curNode.childNodes.length > 0 Then
Call debugPrintOPML4(strXPathQuery & "[position() = " & n4 + 1 & "]/" & curNode.nodeName)
End If
End Sub
Sub xmldocOpen4()
Dim oFSO As New FileSystemObject ' Microsoft Scripting Runtime Reference
Dim oFS
Dim FilePath As String
FilePath = "rss_awasu.opml"
Set oFS = oFSO.OpenTextFile(CurrentProject.Path & "\" & FilePath)
sText4 = oFS.ReadAll
oFS.Close
End Sub
或者更好：
Sub xmldocOpen4()
Dim FilePath As String
FilePath = "rss.opml"
' function ConvertUTF8File(sUTF8File):
' http://www.vbmonster.com/Uwe/Forum.aspx/vb/24947/How-to-read-UTF-8-chars-using-VBA
' loading and conversion from Utf-8 to UTF
sText8 = ConvertUTF8File(CurrentProject.Path & "\" & FilePath)
End Sub
但我不明白，为什么xmldoc4应载入每个时间。
这里是一个简短的分析MicroStation Triforma XML文件，该文件包含的数据，用于钢结构的形状。
'location of triforma structural files
'c:\programdata\bentley\workspace\triforma\tf_imperial\data\us.xml
Sub ReadTriformaImperialData()
Dim txtFileName As String
Dim txtFileLine As String
Dim txtFileNumber As Long
Dim Shape As String
Shape = "w12x40"
txtFileNumber = FreeFile
txtFileName = "c:\programdata\bentley\workspace\triforma\tf_imperial\data\us.xml"
Open txtFileName For Input As #txtFileNumber
Do While Not EOF(txtFileNumber)
Line Input #txtFileNumber, txtFileLine
If InStr(1, UCase(txtFileLine), UCase(Shape)) Then
P1 = InStr(1, UCase(txtFileLine), "D=")
D = Val(Mid(txtFileLine, P1 + 3))
P2 = InStr(1, UCase(txtFileLine), "TW=")
TW = Val(Mid(txtFileLine, P2 + 4))
P3 = InStr(1, UCase(txtFileLine), "WIDTH=")
W = Val(Mid(txtFileLine, P3 + 7))
P4 = InStr(1, UCase(txtFileLine), "TF=")
TF = Val(Mid(txtFileLine, P4 + 4))
Close txtFileNumber
Exit Do
End If
Loop
End Sub
从这里可以使用的值绘制形MicroStation2d或3d挤出它的固体。
更新
该程序提出下面给出了一个例子的分析XML与VBA使用DOM XML对象。代码是基于一个 初学者指南的DOM XML.
Public Sub LoadDocument()
Dim xDoc As MSXML.DOMDocument
Set xDoc = New MSXML.DOMDocument
xDoc.validateOnParse = False
If xDoc.Load("C:\My Documents\sample.xml") Then
' The document loaded successfully.
' Now do something intersting.
DisplayNode xDoc.childNodes, 0
Else
' The document failed to load.
' See the previous listing for error information.
End If
End Sub
Public Sub DisplayNode(ByRef Nodes As MSXML.IXMLDOMNodeList, _
ByVal Indent As Integer)
Dim xNode As MSXML.IXMLDOMNode
Indent = Indent + 2
For Each xNode In Nodes
If xNode.nodeType = NODE_TEXT Then
Debug.Print Space$(Indent) & xNode.parentNode.nodeName & _
":" & xNode.nodeValue
End If
If xNode.hasChildNodes Then
DisplayNode xNode.childNodes, Indent
End If
Next xNode
End Sub
注意 -这个初步的答复显示出尽可能简单的事我能想象(那时候我正在一个非常具体的问题)。自然使用XML设施建成VBA Dom XML会 要好得多。看到更新以上。
原始的反应
我知道这是一个非常古老的职位，但我想分享我的简单解决这个复杂的问题。主要是我用的基本串职能访问xml数据。
这假定你有一些xml数据(在温度变量)已经返回内VBA功能。有趣的是一个还可以看到我怎么连接到xml网服务检索的价值。本函所示图像还需要找价值，因为这Excel VBA功能可以从一个小区内使用=函数(值1,值2)返回值通过网络服务一个电子表格。
openTag = "<" & tagValue & ">"
closeTag = "< /" & tagValue & ">"
' Locate the position of the enclosing tags
startPos = InStr(1, temp, openTag)
endPos = InStr(1, temp, closeTag)
startTagPos = InStr(startPos, temp, ">") + 1
' Parse xml for returned value
Data = Mid(temp, startTagPos, endPos - startTagPos)
它经常是更容易地分析不VBA，当你不想要使宏。这可以通过替换的功能。输入你的开始和结束点进入细胞B1和C1。
Cell A1: {your XML here}
Cell B1: <X>
Cell C1: </X>
Cell D1: =REPLACE(A1,1,FIND(A2,A1)+LEN(A2)-1,"")
Cell E1: =REPLACE(A4,FIND(A3,A4),LEN(A4)-FIND(A3,A4)+1,"")
结果E1线路将有你的分析价值：
Cell A1: {your XML here}
Cell B1: <X>
Cell C1: </X>
Cell D1: 24.365<X><Y>78.68</Y></PointN>
Cell E1: 24.365
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