XML验证错误:未声明元素

I am building a web service in .NET that will pass data back and forth via XML. I would like to validate the XML in the incoming requests using an XSD that I have defined.

我正在。net中构建一个web服务，它将通过XML来回传递数据。我希望使用我定义的XSD在传入请求中验证XML。

Here is the XSD:

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>

Here is the XML:

这是XML:

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

Here is the validation code in C#:

下面是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);
  }

I feel like I had this working before and I'm not completely sure why this isn't working now. Whenever I run this I get the following Exception Message:

我觉得我以前做过这个，我不完全确定为什么现在不工作。每当我运行这个程序时，我都会收到以下异常消息:

Validation error: The 'POSearch' element is not declared.

验证错误:未声明“POSearch”元素。

Have I defined my XSD wrong? Is my validation code wrong? The elements are all clearly there. Any help pointing me in the right direction is greatly appreciated.

我定义的XSD是否错误?我的验证代码是错误的吗?元素都在那里。非常感谢您给我指点方向。

2 个解决方案

#1

You have the type declared but no element declared of that type.

声明了类型，但没有声明该类型的元素。

Add an element declaration:

添加一个元素声明:

<?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>

#2

Try this:

试试这个:

<?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>

#1