xstream:实现JavaBean与XML/JSON的相互转换

     XML和JSON是两种很常用的数据描述和传输格式,在java里提供了完成JavaBean与这两种格式相互转换的组件,即XStream和JSON-lib,通过组件实现可以使得转换省事很多。这里主要讲解xstream的实现。首先要加载xstream包,当前版本是1.3.1,即xstream-1.3.1.jar。

这里先举个最简单的例子:

JavaBean:

package xstream;

public class Person {
	private int id;
	private String name;
	private int age;
        //这里省略setter和getter及构造方法
}

转换测试类:

package xstream;

import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.json.JsonHierarchicalStreamDriver;
import com.thoughtworks.xstream.io.xml.DomDriver;

public class Convert 
{
	public static void main(String[] args) 
	{
		  Person person = new Person(1,"admin",20);
		  XStream xstream = new XStream(new DomDriver());     
		  xstream.alias("Person", Person.class);  
		  String xml = xstream.toXML(person);//JavaBean->XML
		  System.out.println(xml);   
		  	
		  Person otherPerson = (Person) xstream.fromXML(xml);//XML->JavaBean
		  System.out.println("id:"+otherPerson.getId());
		  System.out.println("name:"+otherPerson.getName());
		  System.out.println("age:"+otherPerson.getAge());	
		  	
		  XStream json = new XStream(new JsonHierarchicalStreamDriver()); 
		  json.alias("Person", Person.class);  		  
		  String js = json.toXML(person);//JavaBean->JSON
		  System.out.println(js);
	}
}

输出结果:

<Person>
  <id>1</id>
  <name>admin</name>
  <age>20</age>
</Person>

id:1
name:admin
age:20

{"Person": {
  "id": 1,
  "name": "admin",
  "age": 20
}}

你可能感兴趣的:(xml,json,String,Class,setter,getter)