- Preparation
1. JAXB library
download JAXB library from http://jaxb.java.net/
execute this jar as
java -jar <jaxb jar name>
On Windows, you can just double-click the jar file to execute.
2. Trang library
http://code.google.com/p/jing-trang/downloads/list
- XSD to XML
1. manually prepare the two XSD files
person.xsd
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:address="http://test.xsdxml.com/demo/detail" elementFormDefault="qualified" targetNamespace="http://test.xsdxml.com/demo/person" xmlns="http://test.xsdxml.com/demo/person" >
<xs:import namespace="http://test.xsdxml.com/demo/detail" schemaLocation="detail.xsd" />
<xs:element name="person">
<xs:complexType>
<xs:sequence>
<xs:element ref="header" />
<xs:choice>
<xs:element ref="address" />
<xs:element ref="contactNo" />
</xs:choice>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="header" >
<xs:complexType >
<xs:sequence>
<xs:element name="timestamp" type="xs:dateTime"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="address">
<xs:complexType>
<xs:choice>
<xs:sequence>
<xs:element ref="postcode" />
<xs:element ref="country" />
</xs:sequence>
<xs:sequence />
<xs:element ref="address:detail" />
</xs:choice>
<xs:attribute name="name" use="required">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:enumeration value="home" />
<xs:enumeration value="office" />
</xs:restriction>
</xs:simpleType>
</xs:attribute>
</xs:complexType>
</xs:element>
<xs:element name="contactNo">
<xs:complexType>
<xs:choice>
<xs:sequence>
<xs:element ref="mobile" />
<xs:element ref="fixline" />
</xs:sequence>
<xs:sequence />
</xs:choice>
</xs:complexType>
</xs:element>
<xs:element name="postcode" type="xs:string" />
<xs:element name="country" type="xs:string" />
<xs:element name="mobile" type="xs:string" />
<xs:element name="fixline" type="xs:string" />
</xs:schema>
detail.xsd
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" targetNamespace="http://test.xsdxml.com/demo/detail" xmlns="http://test.xsdxml.com/demo/detail">
<xs:element name="detail">
<xs:complexType>
<xs:sequence>
<xs:element name="street" type="xs:string" />
<xs:choice>
<xs:element ref="buildingNo" />
<xs:element ref="roomNo" />
</xs:choice>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="buildingNo" type="xs:string" />
<xs:element name="roomNo" type="xs:string" />
</xs:schema>
run the command to generate the java classes.
C:\tmp\xjc>xjc person.xsd
parsing a schema...
compiling a schema...
com\xsdxml\test\demo\person\Address.java
com\xsdxml\test\demo\person\ContactNo.java
com\xsdxml\test\demo\person\Header.java
com\xsdxml\test\demo\person\ObjectFactory.java
com\xsdxml\test\demo\person\Person.java
com\xsdxml\test\demo\person\package-info.java
com\xsdxml\test\demo\detail\Detail.java
com\xsdxml\test\demo\detail\ObjectFactory.java
com\xsdxml\test\demo\detail\package-info.java
>> so person object is in package com.xsdxml.test.demo.person, and detail object is in package com.xsdxml.test.demo.detail
2. sample code
package com.xsdxml.test;
import java.io.StringWriter;
import java.util.GregorianCalendar;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.datatype.DatatypeFactory;
import javax.xml.datatype.XMLGregorianCalendar;
import com.xsdxml.test.demo.detail.Detail;
import com.xsdxml.test.demo.person.Address;
import com.xsdxml.test.demo.person.ContactNo;
import com.xsdxml.test.demo.person.Header;
import com.xsdxml.test.demo.person.ObjectFactory;
import com.xsdxml.test.demo.person.Person;
public class JAXBSample {
public static void main(String[] args) throws Exception {
JAXBContext jc = JAXBContext.newInstance("com.xsdxml.test.demo.person");
ObjectFactory factory = new ObjectFactory();
// create person instance from ObjectFactory
Person person = factory.createPerson();
// create header instance from ObjectFactory
Header header = factory.createHeader();
XMLGregorianCalendar cal = DatatypeFactory.newInstance()
.newXMLGregorianCalendar(new GregorianCalendar(2010, 10, 12));
cal.setTime(13, 23, 45);
// give value 2010-10-12T13:23:45 to timestamp
header.setTimestamp(cal);
person.setHeader(header);
// create ContactNo instance from ObjectFactory
ContactNo contNo = factory.createContactNo();
contNo.setMobile("123445");
person.setContactNo(contNo);
Address address = factory.createAddress();
address.setName("Home");
address.setPostcode("112233");
address.setCountry("myCountry");
Detail detail = new Detail();
detail.setStreet("street Name");
detail.setBuildingNo("building 1");
person.setAddress(address);
Marshaller m = jc.createMarshaller();
m.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
// marshal to system.o
m.marshal(person, System.out);
// marshal to string
System.out.println("----> " + asString(jc, person));
}
public static String asString(JAXBContext pContext, Object pObject)
throws JAXBException {
java.io.StringWriter sw = new StringWriter();
Marshaller marshaller = pContext.createMarshaller();
marshaller.setProperty(Marshaller.JAXB_ENCODING, "UTF-8");
marshaller.marshal(pObject, sw);
return sw.toString();
}
}
This is the output if run the class.
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<person xmlns="http://test.xsdxml.com/demo/person" xmlns:ns2="http://test.xsdxml.com/demo/detail">
<header>
<timestamp>2010-11-12T13:23:45+08:00</timestamp>
</header>
<address name="Home">
<postcode>112233</postcode>
<country>myCountry</country>
</address>
<contactNo>
<mobile>123445</mobile>
</contactNo>
</person>
- XML to XSD
1. manually perpare the XML file
person.xml
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<person>
<header>
<timestamp>2010-11-12T13:23:45+08:00</timestamp>
</header>
<address name="Home">
<postcode>112233</postcode>
<country>myCountry</country>
</address>
<contactNo>
<mobile>123445</mobile>
</contactNo>
</person>
2. run this command to generate XSD file
java -jar trang.jar person.xml person.xsd
this is the file person.xsd generated by trang
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified">
<xs:element name="person">
<xs:complexType>
<xs:sequence>
<xs:element ref="header"/>
<xs:element ref="address"/>
<xs:element ref="contactNo"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="header">
<xs:complexType>
<xs:sequence>
<xs:element ref="timestamp"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="timestamp" type="xs:dateTime"/>
<xs:element name="address">
<xs:complexType>
<xs:sequence>
<xs:element ref="postcode"/>
<xs:element ref="country"/>
</xs:sequence>
<xs:attribute name="name" use="required" type="xs:NCName"/>
</xs:complexType>
</xs:element>
<xs:element name="postcode" type="xs:integer"/>
<xs:element name="country" type="xs:NCName"/>
<xs:element name="contactNo">
<xs:complexType>
<xs:sequence>
<xs:element ref="mobile"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="mobile" type="xs:integer"/>
</xs:schema>
Reference URLs
http://www.thaiopensource.com/relaxng/trang.html
http://ws.apache.org/jaxme/release-0.4/manual/ch02s02.html
