XStream的例子

package com.demo;

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

import org.junit.Test;

import com.thoughtworks.xstream.XStream;

public class XStreamDemo {
    public List<Province> getProvince(){
        Province bj = new Province();
        bj.setName("北京");
        List<City> bjCitys = new ArrayList<City>();
        City dcq = new City("东城区","dongchengqu");
        City xcq = new City("西城区","xichengqu");
        City bcq = new City("北城区","beichengqu");
        bjCitys.add(dcq);
        bjCitys.add(xcq);
        bjCitys.add(bcq);
        bj.setCitys(bjCitys);
        
        
        Province gd = new Province();
        bj.setName("广东");
        List<City> gdCitys = new ArrayList<City>();
        City gzs = new City("广州市","guangzhoushi");
        City szs = new City("深圳市","shenzhenshi");
        City czs = new City("潮州市","chaozhoushi");
        gdCitys.add(gzs);
        gdCitys.add(szs);
        gdCitys.add(czs);
        gd.setCitys(gdCitys);
        
        List<Province> provinces = new ArrayList<Province>();
        provinces.add(bj);
        provinces.add(gd);
        return provinces;
    }
    /**
     * 用xstream把JavaBean转换成xml字符串
     */
    @Test
    public void fun1(){
        XStream xs = new XStream();
        String s = xs.toXML(getProvince());
        System.out.println(s);
    }
    
    
    /**
     * 使用xstream的alias(String name,Class object);方法更改类的名称
     */
    @Test
    public void fun2(){
        XStream xs = new XStream();
        xs.alias("china", List.class);
        xs.alias("province", Province.class);
        xs.alias("city", City.class);
        String s = xs.toXML(getProvince());
        System.out.println(s);
    }
    
    /**
     * 把子元素变为元素属性
     */
    @Test
    public void fun3(){
        XStream xs = new XStream();
        //更改别名
        xs.alias("china", List.class);
        xs.alias("province", Province.class);
        xs.alias("city", City.class);
        //把子元素变为元素属性
        xs.useAttributeFor(Province.class, "name");
        
        String s = xs.toXML(getProvince());
        System.out.println(s);
    }
    /**
     *  去除集合属性对应元素
     */
    @Test
    public void fun4(){
        XStream xs = new XStream();
        //更改别名
        xs.alias("china", List.class);
        xs.alias("province", Province.class);
        xs.alias("city", City.class);
        //把子元素变为元素属性
        xs.useAttributeFor(Province.class, "name");
        // 去除集合属性对应元素
        xs.addImplicitCollection(Province.class, "citys");
        String s = xs.toXML(getProvince());
        System.out.println(s);
    }
    /**
     *  去除集合属性对应元素
     */
    @Test
    public void fun5(){
        XStream xs = new XStream();
        //更改别名
        xs.alias("china", List.class);
        xs.alias("province", Province.class);
        xs.alias("city", City.class);
        //把子元素变为元素属性
        xs.useAttributeFor(Province.class, "name");
        // 去除集合属性对应元素
        xs.addImplicitCollection(Province.class, "citys");
        //让类成员不生成对应的xml元素
        xs.omitField(City.class, "explain");
        String s = xs.toXML(getProvince());
        System.out.println(s);
    }
    
}

 ----其它涉及的类-----

Provice.class

import java.util.List;

public class Province {
    private String name;
    private List<City> citys;
    public Province() {
        super();
        // TODO Auto-generated constructor stub
    }
    public Province(String name, List<City> citys) {
        super();
        this.name = name;
        this.citys = citys;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public List<City> getCitys() {
        return citys;
    }
    public void setCitys(List<City> citys) {
        this.citys = citys;
    }
    
    
}

City.class

public class City {
    private String name;
    private String explain;
    public City() {
        super();
        // TODO Auto-generated constructor stub
    }
    public City(String name, String explain) {
        super();
        this.name = name;
        this.explain = explain;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getExplain() {
        return explain;
    }
    public void setExplain(String explain) {
        this.explain = explain;
    } 
    
}