VBA可以使用MSXML2.Document来创建XML Dom树并输出到文件，先看个简单的例子：
Function CreateXml(xmlFile As String) Dim xDoc As Object Dim rootNode As Object Dim header As Object Dim newNode As Object Dim tNode As Object Set xDoc = CreateObject("MSXML2.DOMDocument") Set rootNode = xDoc.createElement("BookList") Set xDoc.DocumentElement = rootNode 'xDoc.Load xmlFile Set header = xDoc.createProcessingInstruction("xml", "version='1.0' encoding='Unicode'") xDoc.InsertBefore header, xDoc.ChildNodes(0) Set newNode = xDoc.createElement("book") Set tNode = xDoc.DocumentElement.appendChild(newNode) tNode.setAttribute "type", "program" Set newNode = xDoc.createElement("name") Set tNode = xDoc.DocumentElement.ChildNodes.Item(0).appendChild(newNode) tNode.appendChild (xDoc.createTextNode("Thinking in Java")) Set newNode = xDoc.createElement("author") Set tNode = xDoc.DocumentElement.ChildNodes.Item(0).appendChild(newNode) tNode.appendChild (xDoc.createTextNode("Bruce Eckel")) Set newNode = xDoc.createElement("book") Set tNode = xDoc.DocumentElement.appendChild(newNode) tNode.setAttribute "type", "literature" Set newNode = xDoc.createElement("name") Set tNode = xDoc.DocumentElement.ChildNodes.Item(1).appendChild(newNode) tNode.appendChild (xDoc.createTextNode("边城")) Set newNode = xDoc.createElement("author") Set tNode = xDoc.DocumentElement.ChildNodes.Item(1).appendChild(newNode) tNode.appendChild (xDoc.createTextNode("沈从文")) Set newNode = Nothing Set tNode = Nothing xDoc.save xmlFileEnd Function在宏工程中调用一下这个函数工程，就可以生成一个xml文件，但是生成的xml文件所有内容都显示在一行上了，有没有方法进行换行及缩进，让xml文件看起来更整齐美观呢？方法是有的，借助Msxml2.SAXXMLReader和Msxml2.MXXMLWriter就可以实现这个效果，看代码：
'格式化xml,带换行缩进Function PrettyPrintXml(xmldoc) As String Dim reader As Object Dim writer As Object Set reader = CreateObject("Msxml2.SAXXMLReader.6.0") Set writer = CreateObject("Msxml2.MXXMLWriter.6.0") writer.indent = True writer.omitXMLDeclaration = True reader.contentHandler = writer reader.Parse (xmldoc) PrettyPrintXml = writer.OutputEnd Function然后将前面的xDoc.save xmlFile改一下：
'xDoc.save xmlFileDim xmlStr As StringxmlStr = PrettyPrintXml(xDoc)WriteUtf8WithoutBom xmlFile, xmlStrOpen xmlFile For Output As #1Print #1, xmlStrClose #1这样就可以格式化输出xml文件了。还有一个问题，我们想要指定xml文件的编码格式，如UTF-8，GB2312等，我通常习惯保存成UTF-8格式，那么该如何设置呢？查找资料，可以用ADODB.stream来搞。
Function WriteWithUtf8(filename As String, content As String) Dim stream As New ADODB.stream stream.Open stream.Type = adTypeText stream.Charset = "utf-8" stream.WriteText content stream.SaveToFile filename, adSaveCreateOverWrite stream.Flush stream.CloseEnd Function细心点的话会发现用上面的方法实际上输出的文件格式是带BOM的UTF-8，它跟UTF-8无BOM的区别在哪呢？用UltraEdit工具来看十六进制码，会发现前者在开头多了三个字节：0xEF,0xBB,0xBF，想保存成UTF-8无BOM，把这三个字节去掉不就行了，实现如下：
' utf8无BOM编码格式Function WriteUtf8WithoutBom(filename As String, content As String) Dim stream As New ADODB.stream stream.Open stream.Type = adTypeText stream.Charset = "utf-8" stream.WriteText "<?xml version=" & Chr(34) & "1.0" & Chr(34) & _ " encoding=" & Chr(34) & "UTF-8" & Chr(34) & "?>" & vbCrLf stream.WriteText content '移除前三个字节（0xEF,0xBB,0xBF） stream.Position = 3 Dim newStream As New ADODB.stream newStream.Type = adTypeBinary newStream.Mode = adModeReadWrite newStream.Open stream.CopyTo newStream stream.Flush stream.Close newStream.SaveToFile filename, adSaveCreateOverWrite newStream.Flush newStream.CloseEnd Function注意需要引用两个库：Microsoft ADO Ext. 6.0 for DDL and Security，Microsoft ActiveX Data Objects 2.7 Library
最后附上完整代码：
Sub 按钮2_Click() Dim xmlFile As String xmlFile = "D:\test\books.xml" CreateXml xmlFileEnd SubFunction CreateXml(xmlFile As String) Dim xDoc As Object Dim rootNode As Object Dim header As Object Dim newNode As Object Dim tNode As Object Set xDoc = CreateObject("MSXML2.DOMDocument") Set rootNode = xDoc.createElement("BookList") Set xDoc.DocumentElement = rootNode 'xDoc.Load xmlFile Set header = xDoc.createProcessingInstruction("xml", "version='1.0' encoding='Unicode'") xDoc.InsertBefore header, xDoc.ChildNodes(0) Set newNode = xDoc.createElement("book") Set tNode = xDoc.DocumentElement.appendChild(newNode) tNode.setAttribute "type", "program" Set newNode = xDoc.createElement("name") Set tNode = xDoc.DocumentElement.ChildNodes.Item(0).appendChild(newNode) tNode.appendChild (xDoc.createTextNode("Thinking in Java")) Set newNode = xDoc.createElement("author") Set tNode = xDoc.DocumentElement.ChildNodes.Item(0).appendChild(newNode) tNode.appendChild (xDoc.createTextNode("Bruce Eckel")) Set newNode = xDoc.createElement("book") Set tNode = xDoc.DocumentElement.appendChild(newNode) tNode.setAttribute "type", "literature" Set newNode = xDoc.createElement("name") Set tNode = xDoc.DocumentElement.ChildNodes.Item(1).appendChild(newNode) tNode.appendChild (xDoc.createTextNode("边城")) Set newNode = xDoc.createElement("author") Set tNode = xDoc.DocumentElement.ChildNodes.Item(1).appendChild(newNode) tNode.appendChild (xDoc.createTextNode("沈从文")) Set newNode = Nothing Set tNode = Nothing Dim xmlStr As String xmlStr = PrettyPrintXml(xDoc) WriteUtf8WithoutBom xmlFile, xmlStr Set rootNode = Nothing Set xDoc = Nothing MsgBox xmlFile & "输出完成"End Function'格式化xml,带换行缩进Function PrettyPrintXml(xmldoc) As String Dim reader As Object Dim writer As Object Set reader = CreateObject("Msxml2.SAXXMLReader.6.0") Set writer = CreateObject("Msxml2.MXXMLWriter.6.0") writer.indent = True writer.omitXMLDeclaration = True reader.contentHandler = writer reader.Parse (xmldoc) PrettyPrintXml = writer.OutputEnd Function' utf8无BOM编码格式Function WriteUtf8WithoutBom(filename As String, content As String) Dim stream As New ADODB.stream stream.Open stream.Type = adTypeText stream.Charset = "utf-8" stream.WriteText "<?xml version=" & Chr(34) & "1.0" & Chr(34) & _ " encoding=" & Chr(34) & "UTF-8" & Chr(34) & "?>" & vbCrLf stream.WriteText content '移除前三个字节（0xEF,0xBB,0xBF） stream.Position = 3 Dim newStream As New ADODB.stream newStream.Type = adTypeBinary newStream.Mode = adModeReadWrite newStream.Open stream.CopyTo newStream stream.Flush stream.Close newStream.SaveToFile filename, adSaveCreateOverWrite newStream.Flush newStream.Close End Function联系客服
