XStream JavaBean对象转换成XML！

代码实例：

1.javaBean类：

package com.hsinfo.web.Demo.XStream;

public class City {
    private String name;
    public City(String name, String description) {
        this.name = name;
        this.description = description;
    }
    private String description;

    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getDescription() {
        return description;
    }
    public void setDescription(String description) {
        this.description = description;
    }

}

2.javaBean类：

package com.hsinfo.web.Demo.XStream;

import java.util.ArrayList;
import java.util.List;

public class Province {

    private String name;

    public Province(String name) {
        this.name = name;
    }

    private List<City> cities = new ArrayList<City>();

    public void addCity(City city) {
        cities.add(city);
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public List<City> getCities() {
        return cities;
    }

    public void setCities(List<City> cities) {
        this.cities = cities;
    }

}

3.Main方法测试：

package com.hsinfo.web.Demo.XStream;

import java.util.ArrayList;
import java.util.List;

import com.thoughtworks.xstream.XStream;

public class Test {

    public static void main(String[] args) {

        Province p1 = new Province("辽宁省");
        p1.addCity(new City("沈阳", "shenyang"));
        p1.addCity(new City("大连", "dalian"));

        Province p2 = new Province("吉林省");
        p2.addCity(new City("长春", "changchen"));
        p2.addCity(new City("白城", "baicheng"));

        List<Province> list = new ArrayList<Province>();

        list.add(p1);
        list.add(p2);
        XStream xstream = new XStream();
        //设置别名
        xstream.alias("china", List.class);
        xstream.alias("province", Province.class);
        xstream.alias("city", City.class);
        //子元素变为元素属性,例如我们需要把<province>子元素<name>变成：<province name="">样式
//        xstream.useAttributeFor(Province.class, "name");

//        去除集合属性对应元素,因为Pronvice类有一个cities成员，所以生成了<cities>元素，但这个元素对XML文档而言没有什么意义，所以我们希望把它去除！
//        xstream.addImplicitCollection(Province.class, "cities");

//        让类的成员不生成对应XML元素,我们都是每个类，每个成员都有对应的元素（或属性）存在，
//        但有时我们并不希望某些类的成员在对应的XML文档中出现，例如我们不希望City类的description成员出现在XML文档中，可以使用下面方法：
        xstream.omitField(City.class, "description");

        String s = xstream.toXML(list);
        System.out.println(s);
    }

}

推荐博客对XStream的讲解十分详细：http://www.cnblogs.com/LiZhiW/p/4313493.html