public class Person
{
 String name;
 int age;
 int number;
 public String getName()
 {
 return name;
 }
 public void setName(String name)
 {
 this.name = name;
 }
 public int getAge()
 {
 return age;
 }
 public void setAge(int age)
 {
 this.age = age;
 }
 public int getNumber()
 {
 return number;
 }
 public void setNumber(int number)
 {
 this.number = number;
 }
 @Override
 public String toString()
 {
 return "Person [name=" + name + ", age=" + age + ", number=" + number
  + "]";
 }
}

Person person = new Person();
 person.setName("老四");
 person.setAge(26);
 person.setNumber(16);
 // JSON对象序列化
 String personJson = null;
 // 将Java对象转换为json
 personJson = JSON.toJSONString(person);
 System.out.println(personJson);

// 将json转换为Java对象
Person parsePerson = JSON.parseObject(personJson, person.getClass());
System.out.println(parsePerson); 

Person person = new Person();
 person.setName("老四");
 person.setAge(26);
 person.setNumber(16);
 // 先创建一下XStream对象
 XStream xStream = new XStream(new DomDriver());
 // 设置Person类的别名
 xStream.alias("老四", Person.class);
 // 将Java对象序列化成XML
 String personXML = xStream.toXML(person);
 //输出XML
 System.out.println(personXML);

// 将XML转换为Java对象
Person parsePerson = (Person) xStream.fromXML(personXML);
//输出Java对象
System.out.println(parsePerson);