这是一个关于如何使用模式进行验证的快速示例。我正在使用W3Schoolsshiporder
中的示例。
架构:
<?xml version="1.0" encoding="ISO-8859-1" ?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="shiporder">
<xs:complexType>
<xs:sequence>
<xs:element name="orderperson" type="xs:string"/>
<xs:element name="shipto">
<xs:complexType>
<xs:sequence>
<xs:element name="name" type="xs:string"/>
<xs:element name="address" type="xs:string"/>
<xs:element name="city" type="xs:string"/>
<xs:element name="country" type="xs:string"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="item" maxOccurs="unbounded">
<xs:complexType>
<xs:sequence>
<xs:element name="title" type="xs:string"/>
<xs:element name="note" type="xs:string" minOccurs="0"/>
<xs:element name="quantity" type="xs:positiveInteger"/>
<xs:element name="price" type="xs:decimal"/>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
<xs:attribute name="orderid" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
</xs:schema>
XML:
<?xml version="1.0" encoding="ISO-8859-1"?>
<shiporder orderid="889923">
<orderperson>John Smith</orderperson>
<shipto>
<name>Ola Nordmann</name>
<address>Langgt 23</address>
<city>4000 Stavanger</city>
<country>Norway</country>
</shipto>
<item>
<title>Empire Burlesque</title>
<note>Special Edition</note>
<quantity>1</quantity>
<price>10.90</price>
</item>
<item>
<title>Hide your heart</title>
<quantity>1</quantity> <!--Change to "one" to see validation error-->
<price>9.90</price>
</item>
</shiporder>
这是使用 Linq2XML 进行的验证:
XDocument document = XDocument.Load("shiporder.xml");
XmlSchemaSet schemas = new XmlSchemaSet();
schemas.Add("", XmlReader.Create("schema.xsd"));
bool errors = false;
document.Validate(schemas, (o, e) =>
{
Console.WriteLine("Validation error: {0}", e.Message);
errors = true;
});
if (!errors)
{
Console.WriteLine("XML document successfully validated.");
}
else
{
Console.WriteLine("XML document does not validate.");
}
如注释中所述更改<quantity>
节点的值,以查看 XML 如何因无效类型而无法验证。