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我正在解组一些来自OGC的XML，并且遇到了并非所有元素都将它们放入最终对象的问题。JAXB DOM Node unmarshalling省略了元素
下面是示例XML
<?xml version="1.0"?>
<wfs:CreateStoredQuery xmlns:wfs="http://www.opengis.net/wfs/2.0"
xmlns:fes="http://www.opengis.org/fes/2.0" xmlns:gml="http://www.opengis.net/gml/3.2"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:myns="http://www.someserver.com/myns"
xsi:schemaLocation="http://www.opengis.net/wfs/2.0
http://schemas.opengis.net/wfs/2.0/wfs.xsd"
service="WFS" version="2.0.0">
<wfs:StoredQueryDefinition id="urn:StoredQueries:FeaturesInPolygon">
<wfs:Title>Features In Polygon</wfs:Title>
<wfs:Abstract>Find all the features in a Polygon.</wfs:Abstract>
<wfs:Parameter name="AreaOfInterest" type="gml:PolygonType" />
<wfs:QueryExpressionText returnFeatureTypes="myns:Parks"
language="urn:ogc:def:queryLanguage:OGC-WFS::WFS_QueryExpression"
isPrivate="false">
<wfs:Query typeNames="myns:Parks">
<fes:Filter>
<fes:Within>
<fes:ValueReference>geometry</fes:ValueReference>
<gml:Polygon>
<gml:exterior>
<gml:LinearRing>
<gml:posList>0 0 100 0 100 100 0 100 0 0</gml:posList>
</gml:LinearRing>
</gml:exterior>
</gml:Polygon>
</fes:Within>
</fes:Filter>
</wfs:Query>
</wfs:QueryExpressionText>
</wfs:StoredQueryDefinition>
</wfs:CreateStoredQuery>
下面是有问题的区域
<xsd:complexType name="StoredQueryDescriptionType">
<xsd:sequence>
<xsd:element ref="wfs:Title" minOccurs="0" maxOccurs="unbounded"/>
<xsd:element ref="wfs:Abstract" minOccurs="0" maxOccurs="unbounded"/>
<xsd:element ref="ows:Metadata" minOccurs="0" maxOccurs="unbounded"/>
<xsd:element name="Parameter"
type="wfs:ParameterExpressionType"
minOccurs="0" maxOccurs="unbounded"/>
<xsd:element name="QueryExpressionText"
type="wfs:QueryExpressionTextType"
minOccurs="1" maxOccurs="unbounded"/>
</xsd:sequence>
<xsd:attribute name="id" type="xsd:anyURI" use="required"/>
</xsd:complexType>
<xsd:complexType name="ParameterExpressionType">
<xsd:sequence>
<xsd:element ref="wfs:Title" minOccurs="0" maxOccurs="unbounded"/>
<xsd:element ref="wfs:Abstract" minOccurs="0" maxOccurs="unbounded"/>
<xsd:element ref="ows:Metadata" minOccurs="0" maxOccurs="unbounded"/>
</xsd:sequence>
<xsd:attribute name="name" type="xsd:string" use="required"/>
<xsd:attribute name="type" type="xsd:QName" use="required"/>
</xsd:complexType>
<xsd:complexType name="QueryExpressionTextType" mixed="true">
<xsd:choice>
<xsd:any namespace="##other" processContents="skip"
minOccurs="0" maxOccurs="unbounded"/>
<xsd:any namespace="##targetNamespace" processContents="skip"
minOccurs="0" maxOccurs="unbounded"/>
</xsd:choice>
<xsd:attribute name="returnFeatureTypes"
type="wfs:ReturnFeatureTypesListType" use="required"/>
<xsd:attribute name="language" type="xsd:anyURI" use="required"/>
<xsd:attribute name="isPrivate" type="xsd:boolean" default="false"/>
</xsd:complexType>
<xsd:simpleType name="ReturnFeatureTypesListType">
<xsd:list itemType="xsd:QName"/>
</xsd:simpleType>
被搞乱是XSD的部分的XSD：任何QueryExpressionTextType下。它具有属性processContents =“skip”，这会导致JAXB创建DOM对象而不是JAXB类。我想我只是使用JAXB上下文解开DOM节点后，这里是我尝试的一些示例代码。
public static void main(String[] args) throws Exception {
InputStream in = new FileInputStream("test/res/createQuery.xml");
JAXBContext context = JAXBContext.newInstance(
net.opengis.gml.v_3_2_1.ObjectFactory.class,
net.opengis.wfs.v_2_0_0.ObjectFactory.class,
net.opengis.filter.v_2_0_0.ObjectFactory.class);
Unmarshaller unmarshaller = context.createUnmarshaller();
JAXBElement<?> jElem = (JAXBElement<?>) unmarshaller.unmarshal(in);
CreateStoredQueryType create = (CreateStoredQueryType) jElem.getValue();
List<StoredQueryDescriptionType> descriptions = create
.getStoredQueryDefinition();
StoredQueryDescriptionType desc = descriptions.get(0);
List<QueryExpressionTextType> texts = desc.getQueryExpressionText();
QueryExpressionTextType text = texts.get(0);
List<Object> contents = text.getContent();
Node node = (Node) contents.get(0);
jElem = (JAXBElement<?>) unmarshaller.unmarshal(node);
QueryType query = (QueryType) jElem.getValue();
// prints[{http://www.someserver.com/myns}Parks]
System.out.println(query.getTypeNames());
// is false
System.out.println(query.isSetAbstractSelectionClause());
}
它将Query对象取出（包括typeNames属性）。但它会跳过Filter对象。 Filter对象继承自AbstractSelectionClause，所以它应该设置在返回的对象中，但它不是。我调试并检查了DOM元素并确认过滤器位于DOM树中。
为了获得我正在使用的JAXB对象，我从jvnet OGC project中检出了SVN存储库，我确实需要编译WFS 2.0模式，但是Filter和GML模式已经完成。
任何有识之士将不胜感激。