XStream别名;元素转属性;去除集合属性(剥皮);忽略不需要元素

﹏ヽ暗。殇╰゛Y 2021-10-26 14:56 382阅读 0赞

**city**

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

**province**

package xstream;
    
    import java.util.ArrayList;
    import java.util.List;
    
    public class Province {
        private String 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;
        }
        public Province(String name, List<City> cities) {
            super();
            this.name = name;
            this.cities = cities;
        }
    
        public Province() {}
    
        public Province(String name) {
            this.name = name;
        }
    }

**　测试类**

package xstream;
    
    import java.util.ArrayList;
    import java.util.List;
    
    import org.junit.Test;
    
    import com.thoughtworks.xstream.XStream;
    
    public class TestXStream {
        public List<Province> getProvinceList(){
            List<Province> provinceList = new ArrayList<Province>();
            
            Province p1 = new Province("北京");
            p1.addCity(new City("东城区","东城区"));
            p1.addCity(new City("西城区","西城区"));
            
            Province p2 = new Province("上海");
            p2.addCity(new City("徐汇区","徐汇区"));
            p2.addCity(new City("浦东新区","浦东新区"));
            
            provinceList.add(p1);
            provinceList.add(p2);
            
            return provinceList;
        }
        //--->原生版
        @Test
        public void fun(){
            List<Province> proList = getProvinceList();
            XStream xStream = new XStream();
            String xml = xStream.toXML(proList);
            System.out.println(xml);
        }
    
        //--->修改
        @Test
        public void fun1(){
            List<Province> proList = getProvinceList();
            XStream xStream = new XStream();
            
            //别名
            xStream.alias("china", java.util.List.class);
            xStream.alias("province", Province.class);
            xStream.alias("city", City.class);
            
            //把子元素变成父元素的属性
            xStream.useAttributeFor(Province.class, "name");
            
            //去掉容器,"剥皮"
            xStream.addImplicitCollection(Province.class, "cities");
            
            //忽略不需要的属性-xml的元素
            xStream.omitField(City.class, "description");
            
            String xml = xStream.toXML(proList);
            System.out.println(xml);
        }
        
    }

子元素转换成属性

![754558-20160524211028084-1605785218.png][]

--------------------

去掉集合元素("剥皮")

![754558-20160524211207194-740103303.png][]

--------------------

忽略不需要的元素

![754558-20160524211252288-18591357.png][]

转载于:https://www.cnblogs.com/JAYIT/p/7797616.html

[754558-20160524211028084-1605785218.png]: /images/20211026/fb2b7edebbbb41aca641ea78ffadd6a5.png
[754558-20160524211207194-740103303.png]: /images/20211026/c82e4ded1a334c91b1d8310eb0d4b9dd.png
[754558-20160524211252288-18591357.png]: /images/20211026/92df3870d14e44a782ccb82e1bce45c3.png