我修改了MSDN示例以反映我的问题。
当使用名称空间时,我无法像预期的那样让文档进行验证;当验证没有名称空间的文档时,无论文档中是否有错误,它都会进行验证。
Dim errors As Boolean = False
Private Sub XSDErrors(ByVal o As Object, ByVal e As ValidationEventArgs)
Console.WriteLine("{0}", e.Message)
errors = True
End Sub
Private Function AddNameSpace(ByVal xDoc As XDocument, ByVal ns As XNamespace) As XDocument
For Each element As XElement In xDoc.Descendants
element.Name = ns + element.Name.LocalName
Next
Return xDoc
End Function
Sub Main()
Dim xsdMarkup As XElement = _
<xsd:schema xmlns:xsd='http://www.w3.org/2001/XMLSchema' xmlns="http://somenamespace.com" targetNamespace="http://somenamespace.com">
<xsd:element name='Root'>
<xsd:complexType>
<xsd:sequence>
<xsd:element name='Child1' minOccurs='1' maxOccurs='1'/>
<xsd:element name='Child2' minOccurs='1' maxOccurs='1'/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:schema>
Dim schemas As XmlSchemaSet = New XmlSchemaSet()
schemas.Add("http://somenamespace.com", xsdMarkup.CreateReader)
Dim doc1 As XDocument = _
<?xml version='1.0'?>
<Root>
<Child1>content1</Child1>
<Child2>content1</Child2>
</Root>
Dim doc2 As XDocument = _
<?xml version='1.0'?>
<Root>
<Child1>content1</Child1>
<Child3>content1</Child3>
</Root>
Dim ns As XNamespace = "http://somenamespace.com"
doc1 = AddNameSpace(doc1, ns)
Console.WriteLine("Validating doc1")
errors = False
doc1.Validate(schemas, AddressOf XSDErrors)
Console.WriteLine("doc1 {0}", IIf(errors = True, "did not validate", "validated"))
Console.WriteLine()
Console.WriteLine("Validating doc2")
errors = False
doc2.Validate(schemas, AddressOf XSDErrors)
Console.WriteLine("doc2 {0}", IIf(errors = True, "did not validate", "validated"))
End Sub
输出:
正在验证doc1
命名空间"中的元素"Root"http://somenamespace.com"在命名空间中具有无效的子元素"Child1"http://somenamespace.com"。需要可能元素的列表:"Child1"。
doc1未验证
正在验证doc2
doc2验证
如果您希望在每个元素上放置名称空间的doc1
有效,则需要将elementFormDefault="qualified"
添加到架构中(在xsd:schema
元素上)。对于当前的架构,有效的实例应该是Root
在targetNamespace中,但ChildX
元素不在命名空间中的实例。
第二个问题是模式验证和名称空间的已知问题,验证解析器为根元素寻找匹配的模式,如果没有,它会松懈验证,这样就不会出现验证错误。使用XmlReader API,您可以要求在这种情况下发出警告,但我不知道如何使用Validate方法来做到这一点。所以你需要像这样的代码
Imports System
Imports System.Xml
Imports System.Xml.Linq
Imports System.Xml.Schema
Module Module1
Dim errors As Boolean = False
Private Sub XSDErrors(ByVal o As Object, ByVal e As ValidationEventArgs)
Console.WriteLine("{0}", e.Message)
errors = True
End Sub
Private Function AddNameSpace(ByVal xDoc As XDocument, ByVal ns As XNamespace) As XDocument
For Each element As XElement In xDoc.Descendants
element.Name = ns + element.Name.LocalName
Next
Return xDoc
End Function
Sub Main()
Dim xsdMarkup As XElement = _
<xsd:schema xmlns:xsd='http://www.w3.org/2001/XMLSchema' xmlns="http://somenamespace.com" targetNamespace="http://somenamespace.com" elementFormDefault="qualified">
<xsd:element name='Root'>
<xsd:complexType>
<xsd:sequence>
<xsd:element name='Child1' minOccurs='1' maxOccurs='1'/>
<xsd:element name='Child2' minOccurs='1' maxOccurs='1'/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:schema>
Dim schemas As XmlSchemaSet = New XmlSchemaSet()
schemas.Add("http://somenamespace.com", xsdMarkup.CreateReader)
Dim doc1 As XDocument = _
<?xml version='1.0'?>
<Root>
<Child1>content1</Child1>
<Child2>content1</Child2>
</Root>
Dim doc2 As XDocument = _
<?xml version='1.0'?>
<Root>
<Child1>content1</Child1>
<Child3>content1</Child3>
</Root>
Dim ns As XNamespace = "http://somenamespace.com"
doc1 = AddNameSpace(doc1, ns)
Console.WriteLine("Validating doc1")
errors = False
doc1.Validate(schemas, AddressOf XSDErrors)
Console.WriteLine("doc1 {0}", IIf(errors = True, "did not validate", "validated"))
Console.WriteLine()
Console.WriteLine("Validating doc2")
Dim xrs As New XmlReaderSettings()
xrs.ValidationType = ValidationType.Schema
xrs.ValidationFlags = xrs.ValidationFlags Or XmlSchemaValidationFlags.ReportValidationWarnings
xrs.Schemas = schemas
AddHandler xrs.ValidationEventHandler, AddressOf XSDErrors
errors = False
Using xr1 As XmlReader = doc2.CreateReader()
Using xr2 As XmlReader = XmlReader.Create(xr1, xrs)
While xr2.Read()
End While
End Using
End Using
Console.WriteLine("doc2 {0}", IIf(errors = True, "did not validate", "validated"))
End Sub
End Module