This sample code shows how to:
▸ Use the JAXB maven plugin to generate Java classes from the XML schemas.
▸ Customize JAXB Bindings to reference existing classes.

|+ mtitek-jaxb-maven-plugin-samples |+ src |+ main |+ java |+ mtitek.jaxb.samples.payload |+ Payload.java |+ mtitek.jaxb.samples.payload.data |+ DataType.java |+ resources |+ payload.xsd |+ payload.xjb |+ payloadData.xsd |+ payloadData.xjb |+ pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>mtitek.jaxb.samples</groupId> <artifactId>mtitek-jaxb-samples</artifactId> <version>1.0.0-SNAPSHOT</version> <packaging>jar</packaging> <build> <plugins> <plugin> <groupId>org.jvnet.jaxb2.maven2</groupId> <artifactId>maven-jaxb2-plugin</artifactId> <version>0.13.1</version> <executions> <execution> <goals> <goal>generate</goal> </goals> </execution> </executions> <configuration> <args> <arg>-Xsetters</arg> </args> <plugins> <plugin> <groupId>org.jvnet.jaxb2_commons</groupId> <artifactId>jaxb2-basics</artifactId> <version>1.11.1</version> </plugin> </plugins> </configuration> </plugin> </plugins> </build> </project>

<?xml version="1.0" encoding="UTF-8"?> <xs:schema elementFormDefault="qualified" attributeFormDefault="unqualified" targetNamespace="http://samples.jaxb.mtitek/payload" xmlns="http://samples.jaxb.mtitek/payload" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:jaxb="http://java.sun.com/xml/ns/jaxb" jaxb:version="2.1"> <xs:element name="payload"> <xs:complexType> <xs:sequence> <xs:element name="id" type="xs:string" /> <xs:element name="code" type="xs:string" /> <xs:element name="parameter" type="parameterType" minOccurs="0" maxOccurs="unbounded" /> <xs:element name="payloadData" type="payloadDataType" minOccurs="0" /> </xs:sequence> </xs:complexType> </xs:element> <xs:complexType name="parameterType"> <xs:all> <xs:element name="name" type="xs:string" /> <xs:element name="value" type="xs:string" /> </xs:all> <xs:attribute name="id" type="xs:string" /> </xs:complexType> <xs:complexType name="payloadDataType"> <xs:sequence> <xs:any minOccurs="0" maxOccurs="unbounded" namespace="##other" processContents="strict"> <xs:annotation> <xs:appinfo> <jaxb:property name="values" /> </xs:appinfo> </xs:annotation> </xs:any> </xs:sequence> </xs:complexType> </xs:schema>

<jxb:bindings version="1.0" xmlns:jxb="http://java.sun.com/xml/ns/jaxb" jaxb:version="2.1" xmlns:xs="http://www.w3.org/2001/XMLSchema"> <jxb:bindings node="//xs:schema//xs:element[@name='payload']" schemaLocation="./payload.xsd"> <jxb:class ref="mtitek.jaxb.samples.payload.Payload" /> </jxb:bindings> </jxb:bindings>

<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <xs:schema elementFormDefault="qualified" attributeFormDefault="unqualified" targetNamespace="http://samples.jaxb.mtitek/payload/data" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:ns1="http://samples.jaxb.mtitek/payload/data"> <xs:element name="data" type="ns1:dataType" /> <xs:complexType name="dataType"> <xs:sequence> <xs:element name="value" type="xs:anyType" /> </xs:sequence> <xs:attribute name="id" type="xs:string" /> </xs:complexType> <xs:complexType name="textDataType"> <xs:sequence> <xs:element name="value" type="xs:string" /> </xs:sequence> <xs:attribute name="id" type="xs:string" /> </xs:complexType> <xs:complexType name="dateDataType"> <xs:sequence> <xs:element name="value" type="xs:dateTime" /> </xs:sequence> <xs:attribute name="id" type="xs:string" /> </xs:complexType> </xs:schema>

<jxb:bindings version="1.0" xmlns:jxb="http://java.sun.com/xml/ns/jaxb" jaxb:version="2.1" xmlns:xs="http://www.w3.org/2001/XMLSchema"> <jxb:bindings node="//xs:schema//xs:complexType[@name='dataType']" schemaLocation="./payloadData.xsd"> <jxb:class ref="mtitek.jaxb.samples.payload.data.DataType" /> </jxb:bindings> </jxb:bindings>

package mtitek.jaxb.samples.payload; import java.util.ArrayList; import java.util.List; import javax.xml.bind.annotation.XmlAccessType; import javax.xml.bind.annotation.XmlAccessorType; import javax.xml.bind.annotation.XmlElement; import javax.xml.bind.annotation.XmlRootElement; import javax.xml.bind.annotation.XmlType; @XmlAccessorType(XmlAccessType.FIELD) @XmlType(name = "", propOrder = { "id", "code", "parameters", "payloadData" }) @XmlRootElement(name = "payload") public class Payload { @XmlElement(required = true) private String id; @XmlElement(required = true) private String code; @XmlElement(name = "parameter") private final List<ParameterType> parameters = new ArrayList<>(); private PayloadDataType payloadData; public String getId() { return id; } public void setId(String value) { this.id = value; } public String getCode() { return code; } public void setCode(String value) { this.code = value; } public List<ParameterType> getParameters() { List<ParameterType> copyParameters = new ArrayList<ParameterType>(); copyParameters.addAll(this.parameters); return copyParameters; } public void setParameters(final List<ParameterType> parameters) { this.parameters.clear(); if (parameters != null) { this.parameters.addAll(parameters); } } public PayloadDataType getPayloadData() { return payloadData; } public void setPayloadData(PayloadDataType value) { this.payloadData = value; } @Override public String toString() { return "Payload [id=" + id + ", code=" + code + "]"; } }

package mtitek.jaxb.samples.payload.data; import javax.xml.bind.annotation.XmlAccessType; import javax.xml.bind.annotation.XmlAccessorType; import javax.xml.bind.annotation.XmlAttribute; import javax.xml.bind.annotation.XmlElement; import javax.xml.bind.annotation.XmlRootElement; import javax.xml.bind.annotation.XmlType; @XmlRootElement(name = "data") @XmlAccessorType(XmlAccessType.FIELD) @XmlType(name = "dataType", propOrder = { "value" }) public class DataType { @XmlAttribute(name = "id") protected String id; @XmlElement(required = true) protected Object value; public String getId() { return id; } public void setId(String value) { this.id = value; } public Object getValue() { return value; } public void setValue(Object value) { this.value = value; } @Override public String toString() { return "DataType [id=" + id + ", value=" + value + "]"; } }

<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <payload xmlns="http://samples.jaxb.mtitek/payload" xmlns:ns1="http://samples.jaxb.mtitek/payload/data" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://samples.jaxb.mtitek/payload payload.xsd http://samples.jaxb.mtitek/payload/data payloadData.xsd"> <id>123</id> <code>xyz</code> <parameter id="11"> <name>bar</name> <value>foo</value> </parameter> <parameter id="22"> <value>ti</value> <name>ta</name> </parameter> <payloadData> <ns1:data id="3"> <ns1:value id="31" xsi:type="ns1:textDataType"> <ns1:value>bbb</ns1:value> </ns1:value> </ns1:data> <ns1:data id="4"> <ns1:value id="41" xsi:type="ns1:dateDataType"> <ns1:value>2017-11-16T17:49:50.816Z</ns1:value> </ns1:value> </ns1:data> </payloadData> </payload>