我有这个非常简单的XSD模式
<?xml version = "1.0" encoding = "UTF-8"?>
<schema xmlns = "http://www.w3.org/2001/XMLSchema"
targetNamespace = "http://my.domain/xmlschemas/message"
xmlns:mmm = "http://my.domain/xmlschemas/message"
xmlns:ds = "http://www.w3.org/2000/09/xmldsig#"
xmlns:xsd = "http://www.w3.org/2001/XMLSchema"
elementFormDefault = "qualified">
<import namespace = "http://www.w3.org/2000/09/xmldsig#" schemaLocation = "xmldsig-core-schema.xsd"/>
<element name = "message">
<complexType>
<sequence>
<element name = "Signature" type = "ds:SignatureType" minOccurs = "0" maxOccurs = "unbounded"/>
</sequence>
</complexType>
</element>
</schema>
存储为我的Visual Studio 2010 C#项目以及从
xmldsig-core-schema.xsd
下载的www.w3.org/TR/xmldsig-core/xmldsig-core-schema.xsd
的嵌入式资源。我想针对这个XSD模式验证我的文档。我的文件:
<?xml version="1.0" encoding="UTF-8"?>
<message xmlns="http://my.domain/xmlschemas/message">
</message>
我使用
XmlDocument.Validate(...)
方法通过这种方式进行验证:XmlDocument doc = new XmlDocument();
doc.PreserveWhitespace = true;
doc.Load(inputStream); //XML document loads correctly...
Assembly myAssembly = Assembly.GetExecutingAssembly();
using (Stream schemaStream = myAssembly.GetManifestResourceStream("XmlSigTest.Resources.message.xsd"))
{
XmlSchema schema = XmlSchema.Read(schemaStream, null);
doc.Schemas.Add(schema); //XSD schema loads correctly
}
bool ok = true;
doc.Validate((s, e) => //throws Exception!!!
{
ok = false;
});
此代码在
doc.Validate(...)
中引发异常,并显示消息:Type 'http://www.w3.org/2000/09/xmldsig#:SignatureType' is not declared
。但是,Visual Studio XML编辑器中没有警告或错误,我可以在Visual Studio XML Schema Explorer中看到SignatureType
。为什么会引发此异常?我该怎么办? 最佳答案
我自己解决了这个问题。我的XSD的这一行效果不佳:
<import namespace = "http://www.w3.org/2000/09/xmldsig#" schemaLocation = "xmldsig-core-schema.xsd"/>
我以为
doc.Validate(...)
会自动下载或找到所有引用的外部架构。 (在我的情况下为xmldsig-core-schema.xsd
)。好吧...不会。我必须将引用的架构手动添加到
doc.Schemas
,此后一切正常。结果代码:
XmlDocument doc = new XmlDocument();
doc.PreserveWhitespace = true;
doc.Load(inputStream);
Assembly myAssembly = Assembly.GetExecutingAssembly();
foreach (string resource in new string[] {"message.xsd", "xmldsig-core-schema.xsd"}) {
using (Stream schemaStream = myAssembly.GetManifestResourceStream("XmlSigTest.Resources." + resource))
{
XmlSchema schema = XmlSchema.Read(schemaStream, null);
doc.Schemas.Add(schema);
}
}
bool ok = true;
doc.Validate((s, e) =>
{
ok = false;
});