Specify namespace for an element in XSD

问题

I've got an XML for which I need to generate an XSD. My XML goes as follows:

Instance:

    <mes:GetInboundResponseGetInboundSMS 
          xmlns:mes="http://abcd.com">
         <response>
            <messages>
               <item>
                  <date>15/04/2014 00:00:00</date>
               </item>
               <item>
                  <date>01/07/2014 10:01:32</date>
               </item>
            </messages>
         </response>
    </mes:GetInboundResponseGetInboundSMS>

Please note that only the outermost element GetInboundResponseGetInboundSMS belongs to a namespace http://abcd.com - the rest of the elements don't. How do I specify this in the XSD?

I've tried with following XSD but that gives me error:

XSD:

<xs:schema attributeFormDefault="unqualified" 
           elementFormDefault="qualified" 
           xmlns:xs="http://www.w3.org/2001/XMLSchema">

<xs:element name="GetInboundResponseGetInboundSMS">
    <xs:complexType>
      <xs:sequence>

<xs:element name="response">
    <xs:complexType>
      <xs:sequence>
        <xs:element name="messages">
          <xs:complexType>
            <xs:sequence>
              <xs:element name="item" 
                          maxOccurs="unbounded" minOccurs="0">
                <xs:complexType>
                  <xs:sequence>
                    <xs:element type="xs:string" name="date"/>
                  </xs:sequence>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
      </xs:sequence>
    </xs:complexType>
  </xs:element>

</xs:sequence>
    </xs:complexType>
  </xs:element>
</xs:schema>

But when I tried to validate the instance with the XSD using an online validator, I ended up with this error:

Not valid.
Error - Line 1, 95: org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 95; cvc-elt.1: Cannot find the declaration of element 'mes:GetInboundResponseGetInboundSMS'.

Which is logical, as I did not provide the namespace in the XSD. Please help me understanding how do I provide this namespace ONLY FOR THE OUTERMOST ELEMENT in my XSD.

回答1:

You've got two things that aren't quite what you want.

You want the GetInboundResponseGetInboundSMS element to be in the namespace http://abcd.com.

So add targetNamespace="http://abcd.com" to your schema element.
You want the children of that element (which are all declared as local to the anonymous complex type of the GetInboundResponseGetInboundSMS element) to be unqualified.

So change elementFormDefault="qualified" on the schema element to elementFormDefault="unqualified".

The start-tag for your schema document should look something like this:

<xs:schema targetNamespace="http://abcd.com"
           attributeFormDefault="unqualified" 
           elementFormDefault="unqualified" 
           xmlns:xs="http://www.w3.org/2001/XMLSchema">

来源：https://stackoverflow.com/questions/25398863/specify-namespace-for-an-element-in-xsd

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