JAVA 实体类 Person.java

public class Person {

private int id;

private String username;

private String age;

private String address;

public int getId() {

return id;

}

public void setId(int id) {

this.id = id;

}

public String getUsername() {

return username;

}

public void setUsername(String username) {

this.username = username;

}

public String getAge() {

return age;

}

public void setAge(String age) {

this.age = age;

}

public String getAddress() {

return address;

}

public void setAddress(String address) {

this.address = address;

}

//无参构造函数

public Person(){

super();

}

//有参构造函数

public Person(int id,String username,String age,String address){

this.id=id;

this.username=username;

this.age=age;

this.address=address;

}

}

第二个JAVA实体类，把上面声明的Person 实体作为一个变量存在

注意 @XmlRootElement 的注解的使用

import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement

public class ObjectDemo {

private String name;

private String sex;

private Person person;

/**

* @return the person

*/

public Person getPerson() {

return person;

}

/**

* @param person the person to set

*/

public void setPerson(Person person) {

this.person = person;

}

/**

* @return the name

*/

public String getName() {

return name;

}

/**

* @param name the name to set

*/

public void setName(String name) {

this.name = name;

}

/**

* @return the sex

*/

public String getSex() {

return sex;

}

/**

* @param sex the sex to set

*/

public void setSex(String sex) {

this.sex = sex;

}

//有参构造方法

public ObjectDemo(String name,String sex,Person person){

this.name=name;

this.sex=sex;

this.person=person;

}

//无参构造方法

public ObjectDemo(){

super();

}

}

测试方法

import java.io.StringReader;

import javax.xml.bind.JAXBContext;

import javax.xml.bind.JAXBException;

import javax.xml.bind.Marshaller;

import javax.xml.bind.Unmarshaller;

import org.junit.Test;

import com.demo.vo.ObjectDemo;

import com.demo.vo.Person;

public class XmlToObject {

@Test

public void XMLTobean() {

Person p = new Person(1, "小红", "10", "北京");

ObjectDemo ob = new ObjectDemo("小明", "11", p);

try {

JAXBContext context = JAXBContext.newInstance(ObjectDemo.class);

Marshaller marshaller = context.createMarshaller();

marshaller.marshal(ob, System.out);//这里的输出流直接输出了，也可以使用ByteArrayOutputStream();接收，toString()

} catch (JAXBException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

@Test

public void beanToXML() {

String xml="<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>" +

"" +

"小明" +

"" +

"

北京

" +

"10" +

"1" +

"小红" +

"" +

"11" +

"";

try {

JAXBContext context = JAXBContext.newInstance(ObjectDemo.class);

Unmarshaller unmarshaller = context.createUnmarshaller();

ObjectDemo obj = (ObjectDemo)unmarshaller.unmarshal(new StringReader(xml));

System.out.println(obj.getName());

System.out.println(obj.getPerson().getAddress());

} catch (JAXBException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}