XML验证错误:未声明元素

Question

我正在.NET中构建一个Web服务,它将通过XML来回传递数据.我想使用我定义的XSD验证传入请求中的XML.

这是XSD:

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
   <xs:complexType name="POSearch">
       <xs:sequence minOccurs="0" maxOccurs="10">
           <xs:element name="POID" type="xs:positiveInteger"/>
       </xs:sequence>
   </xs:complexType>
</xs:schema>

这是XML:

<POSearch>
   <POID>1</POID>
   <POID>2</POID>
</POSearch>

这是C#中的验证代码:

static void Main(string[] args){
   XmlSchemaSet iSchemas = new XmlSchemaSet();
   iSchemas.Add(string.Empty, @"...xsd file location");

   XmlReaderSettings settings = new XmlReaderSettings();
   settings.ValidationType = ValidationType.Schema;
   settings.ValidationFlags |= XmlSchemaValidationFlags.ProcessInlineSchema;
   settings.ValidationFlags |= XmlSchemaValidationFlags.ProcessSchemaLocation;
   settings.ValidationFlags |= XmlSchemaValidationFlags.ReportValidationWarnings;
   settings.ValidationEventHandler += new ValidationEventHandler(ValidationCallBack);
   settings.Schemas.Add(iSchemas);

   XmlReader reader = XmlReader.Create(@"...xml file location", settings);

   try {
      while(reader.Read())
       ;
   }
   catch(Exception ex) {
      Console.WriteLine(ex.Message);
   }
}

private static void ValidationCallBack(object sender, ValidationEventArgs args) {
     if(args.Severity == XmlSeverityType.Warning)
        Console.WriteLine("\tWarning: Matching schema not found.  No validation occurred." + args.Message);
     else
        Console.WriteLine("\tValidation error: " + args.Message);
  }

我觉得我之前有这个工作,我不完全确定为什么现在这不起作用.每当我运行它时,我得到以下异常消息:

验证错误:未声明'POSearch'元素.

我是否定义了XSD错误？我的验证码是错的吗？这些元素都很清楚.非常感谢任何指导我正确方向的帮助.

Answer 1

您已声明了类型,但没有声明该类型的元素.

添加元素声明:

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">

   <xs:element name="POSearch" type="POSearch"/>

   <xs:complexType name="POSearch">
       <xs:sequence minOccurs="0" maxOccurs="10">
           <xs:element name="POID" type="xs:positiveInteger"/>
       </xs:sequence>
   </xs:complexType>
</xs:schema>

Answer 2

尝试这个：

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
   <xs:complexType name="POSearch">
       <xs:sequence minOccurs="0" maxOccurs="10">
           <xs:element name="POID" type="xs:positiveInteger"/>
       </xs:sequence>
   </xs:complexType>
    <xs:element name="POSearch" type="POSearch"/>
</xs:schema>