#655
[Java] Marshalling/Unmarshaling Java / XML
Basic solution using Xstream :
// From XML to Java
XStream xstream = new XStream();
xstream.alias("ClassA", ClassA.class);
xstream.alias("ClassB", ClassB.class);
xstream.alias("ClassC", ClassC.class);
ClassA beanFromXml = (ClassA) xstream.fromXML(new FileReader(new File("ClassA.xml")));
// From Java to XML
xstream.toXML(beanFromXml, new FileWriter(new File("ClassA-2.xml")));
Maven dependency :
<!-- XStream -->
<dependency>
<groupId>com.thoughtworks.xstream</groupId>
<artifactId>xstream</artifactId>
<version>1.4.3</version>
</dependency>
Marshalling / Unmarshalling using JAXB :
// From Java to XML :
JAXBContext jc = JAXBContext.newInstance(JAXB_CONTEXT);
Marshaller m = jc.createMarshaller();
m.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
m.marshal(new ClassA(), new FileWriter(new File("ClassA.xml")));
// From XML to Java :
JAXBContext jc = JAXBContext.newInstance(JAXB_CONTEXT);
Unmarshaller u = jc.createUnmarshaller();
ClassA beanFromXml = (ClassA) u.unmarshal(new FileReader(new File("ClassA.xml")));
Maven dependency :
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.1</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>2.2-promoted-b65</version>
</dependency>
For JAXB, the root XML element should be annoted with : @XmlRootElement
Each sub element could be annoted with : @XmlType(name = “
each attribute with @XmlElement(name = “
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Other JAXB Solution :
InputStream xmlStream = new FileInputStream(new File(".../file1.xml")); ClassA result = JAXB.unmarshal(xmlStream, ClassA.class); xmlStream.close();