@Retention(value=RUNTIME) @Target(value={字段,METHOD,PARAMETER}) public @interface XmlAttachmentRef
DataHandler类。 
         @XmlRootElement
 class Foo {
   @XmlAttachmentRef
   @XmlAttribute
   DataHandler data;
   @XmlAttachmentRef
   @XmlElement
   DataHandler body;
 }  
       以上代码映射到以下XML: 
         <xs:element name="foo" xmlns:ref="http://ws-i.org/profiles/basic/1.1/xsd">
   <xs:complexType>
     <xs:sequence>
       <xs:element name="body" type="ref:swaRef" minOccurs="0" />
     </xs:sequence>
     <xs:attribute name="data" type="ref:swaRef" use="optional" />
   </xs:complexType>
 </xs:element>  
       上述绑定支持WS-I AP 1.0 WS-I Attachments Profile Version 1.0.
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