VBA DOM 查找具有属性的特定节点

Question

我有一个很大的 XML 文件，我正在尝试使用 DOM 进行解析。如果节点的父节点包含特定的 "id" 属性，我要做的只是从节点中提取信息。

例如，如果我只想提取包含 "id = Adventure" 的书籍的 TITLE 或 AUTHOR - 我将如何使用 DOM 来实现？

<?xml version="1.0"?>
<catalog>
<book id="Adventure">
   <author>Gambardella, Matthew</author>
   <title>XML Developer's Guide</title>
   <price>44.95</price>
</book>
<book id="Adventure">
   <author>Ralls, Kim</author>
   <title>Midnight Rain</title>
   <price>5.95</price>
</book>
<book id="Adventure">
   <author>Boal, John</author>
   <title>Mist</title>
   <price>15.95</price>
</book>
<book id="Mystery">
   <author>Ralls, Kim</author>
   <title>Some Mystery Book</title>
   <price>9.95</price>
</book>
</catalog>

现在使用此代码：

Sub mySub()

Dim mainWorkBook As Workbook
Dim XCMFILE As Variant
Dim BookType As String
Dim BookTitle As Variant
Dim Title As String
Dim n As IXMLDOMNode
Dim i As Integer

Set mainWorkBook = ActiveWorkbook
Set XCMFILE = CreateObject("Microsoft.XMLDOM")

XCMFILE.Load (XCMFileName) 'Load XCM File


i = 0

For Each n In XCMFILE.SelectNodes("/catalog/book")
    BookType= n.Attributes.getNamedItem("id").Text 'Search for id attribute within node
    If BookID = "Adventure" Then
        Set BookTitle = = XCMFILE.SelectNodes("/catalog/book/title/text()")
        Title = BookTitle(i).NodeValue
        mainWorkBook.Sheets("Sheet1").Range("B" & i + 3).Value = BookTitle'Prints values into B column
        i = i + 1
    EndIf

Next
End Sub

我不知道如何正确递增以只拉出适合我 specification/category 的节点。

感谢任何提示和指点 - 我很感激。

Answer 1

你不需要增加任何东西。只需编写一个只选择您感兴趣的节点的 XPath 查询：

For Each n In XCMFILE.SelectNodes("/catalog/book[@id=""Adventure""]")
    ' n is a book node with the "id" attribute value "Adventure"
Next

VBA DOM 查找具有属性的特定节点

VBA DOM Find Specific Nodes With Attributes

xml

vba

attributes

dom

xml-parsing