XJC включений до каталогу bin в JDK, починаючи з Java SE 6. Для прикладу див .:
Зміст блогу такий:
Обробка каналів Atom за допомогою JAXB
Atom - це формат XML для представлення веб-каналів. Стандартний формат дозволяє читацьким програмам відображати канали з різних джерел. У цьому прикладі ми обробимо канал Atom для цього блогу.
Демо
У цьому прикладі ми будемо використовувати JAXB для перетворення каналу XML Atom, що відповідає цьому блогу, в об'єкти, а потім назад до XML.
import java.io.InputStream;
import java.net.URL;
import javax.xml.bind.*;
import javax.xml.transform.stream.StreamSource;
import org.w3._2005.atom.FeedType;
public class Demo {
public static void main(String[] args) throws Exception {
JAXBContext jc = JAXBContext.newInstance("org.w3._2005.atom");
Unmarshaller unmarshaller = jc.createUnmarshaller();
URL url = new URL("http://bdoughan.blogspot.com/atom.xml");
InputStream xml = url.openStream();
JAXBElement<feedtype> feed = unmarshaller.unmarshal(new StreamSource(xml), FeedType.class);
xml.close();
Marshaller marshaller = jc.createMarshaller();
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
marshaller.marshal(feed, System.out);
}
}
Модель JAXB
Наступна модель була створена схемою для компілятора Java (XJC). Я опустив методи get / set та коментарі, щоб заощадити місце.
xjc -d generated http://www.kbcafe.com/rss/atom.xsd.xml
інформація про пакет
@XmlSchema(
namespace = "http://www.w3.org/2005/Atom",
elementFormDefault = XmlNsForm.QUALIFIED)
@XmlAccessorType(XmlAccessType.FIELD)
package org.w3._2005.atom;
import javax.xml.bind.annotation.*;
КатегоріяТип
package org.w3._2005.atom;
import java.util.*;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.namespace.QName;
@XmlType(name = "categoryType")
public class CategoryType {
@XmlAttribute(required = true)
protected String term;
@XmlAttribute
@XmlSchemaType(name = "anyURI")
protected String scheme;
@XmlAttribute
protected String label;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlSchemaType(name = "anyURI")
protected String base;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlJavaTypeAdapter(CollapsedStringAdapter.class)
@XmlSchemaType(name = "language")
protected String lang;
@XmlAnyAttribute
private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}
Тип вмісту
package org.w3._2005.atom;
import java.util.*;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.namespace.QName;
@XmlType(name = "contentType", propOrder = {"content"})
public class ContentType {
@XmlMixed
@XmlAnyElement(lax = true)
protected List<Object> content;
@XmlAttribute
protected String type;
@XmlAttribute
@XmlSchemaType(name = "anyURI")
protected String src;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlSchemaType(name = "anyURI")
protected String base;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlJavaTypeAdapter(CollapsedStringAdapter.class)
@XmlSchemaType(name = "language")
protected String lang;
@XmlAnyAttribute
private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}
DateTimeType
package org.w3._2005.atom;
import java.util.*;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.datatype.XMLGregorianCalendar;
import javax.xml.namespace.QName;
@XmlType(name = "dateTimeType", propOrder = {"value"})
public class DateTimeType {
@XmlValue
@XmlSchemaType(name = "dateTime")
protected XMLGregorianCalendar value;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlSchemaType(name = "anyURI")
protected String base;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlJavaTypeAdapter(CollapsedStringAdapter.class)
@XmlSchemaType(name = "language")
protected String lang;
@XmlAnyAttribute
private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}
EntryType
package org.w3._2005.atom;
import java.util.*;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.namespace.QName;
@XmlType(name = "entryType", propOrder = {"authorOrCategoryOrContent"})
public class EntryType {
@XmlElementRefs({
@XmlElementRef(name = "id", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "rights", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "summary", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "title", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "author", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "source", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "updated", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "category", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "content", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "published", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "contributor", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "link", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class)
})
@XmlAnyElement(lax = true)
protected List<Object> authorOrCategoryOrContent;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlSchemaType(name = "anyURI")
protected String base;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlJavaTypeAdapter(CollapsedStringAdapter.class)
@XmlSchemaType(name = "language")
protected String lang;
@XmlAnyAttribute
private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}
FeedType
package org.w3._2005.atom;
import java.util.*;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.namespace.QName;
@XmlType(name = "feedType", propOrder = {"authorOrCategoryOrContributor"})
public class FeedType {
@XmlElementRefs({
@XmlElementRef(name = "link", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "updated", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "category", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "rights", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "contributor", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "title", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "id", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "generator", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "icon", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "subtitle", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "author", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "entry", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "logo", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class)
})
@XmlAnyElement(lax = true)
protected List<Object> authorOrCategoryOrContributor;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlSchemaType(name = "anyURI")
protected String base;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlJavaTypeAdapter(CollapsedStringAdapter.class)
@XmlSchemaType(name = "language")
protected String lang;
@XmlAnyAttribute
private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}
Тип генератора
package org.w3._2005.atom;
import java.util.*;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.namespace.QName;
@XmlType(name = "generatorType", propOrder = {"value"})
public class GeneratorType {
@XmlValue
protected String value;
@XmlAttribute
@XmlSchemaType(name = "anyURI")
protected String uri;
@XmlAttribute
protected String version;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlSchemaType(name = "anyURI")
protected String base;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlJavaTypeAdapter(CollapsedStringAdapter.class)
@XmlSchemaType(name = "language")
protected String lang;
@XmlAnyAttribute
private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}
IconType
package org.w3._2005.atom;
import java.util.*;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.namespace.QName;
@XmlType(name = "iconType", propOrder = {"value"})
public class IconType {
@XmlValue
@XmlSchemaType(name = "anyURI")
protected String value;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlSchemaType(name = "anyURI")
protected String base;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlJavaTypeAdapter(CollapsedStringAdapter.class)
@XmlSchemaType(name = "language")
protected String lang;
@XmlAnyAttribute
private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}
IdType
package org.w3._2005.atom;
import java.util.*;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.namespace.QName;
@XmlType(name = "idType", propOrder = {"value"})
public class IdType {
@XmlValue
@XmlSchemaType(name = "anyURI")
protected String value;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlSchemaType(name = "anyURI")
protected String base;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlJavaTypeAdapter(CollapsedStringAdapter.class)
@XmlSchemaType(name = "language")
protected String lang;
@XmlAnyAttribute
private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}
LinkType
package org.w3._2005.atom;
import java.math.BigInteger;
import java.util.*;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.namespace.QName;
@XmlType(name = "linkType", propOrder = {"content"})
public class LinkType {
@XmlValue
protected String content;
@XmlAttribute(required = true)
@XmlSchemaType(name = "anyURI")
protected String href;
@XmlAttribute
protected String rel;
@XmlAttribute
protected String type;
@XmlAttribute
@XmlJavaTypeAdapter(CollapsedStringAdapter.class)
@XmlSchemaType(name = "NMTOKEN")
protected String hreflang;
@XmlAttribute
protected String title;
@XmlAttribute
@XmlSchemaType(name = "positiveInteger")
protected BigInteger length;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlSchemaType(name = "anyURI")
protected String base;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlJavaTypeAdapter(CollapsedStringAdapter.class)
@XmlSchemaType(name = "language")
protected String lang;
@XmlAnyAttribute
private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}
Логотип
package org.w3._2005.atom;
import java.util.*;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.namespace.QName;
@XmlType(name = "logoType", propOrder = {"value"})
public class LogoType {
@XmlValue
@XmlSchemaType(name = "anyURI")
protected String value;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlSchemaType(name = "anyURI")
protected String base;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlJavaTypeAdapter(CollapsedStringAdapter.class)
@XmlSchemaType(name = "language")
protected String lang;
@XmlAnyAttribute
private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}
Тип особи
package org.w3._2005.atom;
import java.util.*;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.namespace.QName;
@XmlType(name = "personType", propOrder = {"nameOrUriOrEmail"})
public class PersonType {
@XmlElementRefs({
@XmlElementRef(name = "email", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "name", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "uri", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class)
})
@XmlAnyElement(lax = true)
protected List<Object> nameOrUriOrEmail;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlSchemaType(name = "anyURI")
protected String base;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlJavaTypeAdapter(CollapsedStringAdapter.class)
@XmlSchemaType(name = "language")
protected String lang;
@XmlAnyAttribute
private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}
SourceType
package org.w3._2005.atom;
import java.util.*;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.namespace.QName;
@XmlType(name = "sourceType", propOrder = {"authorOrCategoryOrContributor"})
public class SourceType {
@XmlElementRefs({
@XmlElementRef(name = "updated", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "category", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "subtitle", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "logo", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "generator", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "icon", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "title", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "id", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "author", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "contributor", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "link", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
@XmlElementRef(name = "rights", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class)
})
@XmlAnyElement(lax = true)
protected List<Object> authorOrCategoryOrContributor;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlSchemaType(name = "anyURI")
protected String base;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlJavaTypeAdapter(CollapsedStringAdapter.class)
@XmlSchemaType(name = "language")
protected String lang;
@XmlAnyAttribute
private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}
TextType
package org.w3._2005.atom;
import java.util.*;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.namespace.QName;
@XmlType(name = "textType", propOrder = {"content"})
public class TextType {
@XmlMixed
@XmlAnyElement(lax = true)
protected List<Object> content;
@XmlAttribute
@XmlJavaTypeAdapter(CollapsedStringAdapter.class)
protected String type;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlSchemaType(name = "anyURI")
protected String base;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlJavaTypeAdapter(CollapsedStringAdapter.class)
@XmlSchemaType(name = "language")
protected String lang;
@XmlAnyAttribute
private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}
UriType
package org.w3._2005.atom;
import java.util.*;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.namespace.QName;
@XmlType(name = "uriType", propOrder = {"value"})
public class UriType {
@XmlValue
@XmlSchemaType(name = "anyURI")
protected String value;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlSchemaType(name = "anyURI")
protected String base;
@XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
@XmlJavaTypeAdapter(CollapsedStringAdapter.class)
@XmlSchemaType(name = "language")
protected String lang;
@XmlAnyAttribute
private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}