XStream的用法

XStream的用法

1. XStream的作用

   • Xstream是一個功能比較強大的xml和java對象互轉的工具包。可以通過簡單的api調用，便實現一系列的轉換操作。

2. 使用XStream需導入的jar包

   1. xmlpull_1_0_5.jar

   2. xstream-1.4.8.jar

3. 使用步驟

   • XStream xstream = new XStream();
     String s = xstream.toXML(prolist);

4. 使用細節

   1. 取別名：
       

              xstream.alias("china", java.util.List.class);
              xstream.alias("province", Modol.Province.class);
              xstream.alias("city", Modol.City.class);

       

   2. 將java中的屬性改爲xml中元素的屬性：
       

      xstream.useAttributeFor(Modol.Province.class, "name");

       

   3. 去除Collectio類型的成員：
       

      xstream.addImplicitCollection(Modol.Province.class, "cities");

       

   4. 去除類的指定成員，讓其不生成xml元素：

   xstream.omitField(Modol.City.class, "description");

   1. ---

5. 實例

       package Test;
       ​
       import java.util.ArrayList;
       import java.util.List;
       ​
       import com.thoughtworks.xstream.XStream;
       ​
       import Modol.City;
       import Modol.Province;
       ​
       public class Demo {
           public static List<Province> getProvinceList() {
               Province p1 = new Province();
               p1.setName("北京");
               p1.addCity(new City("東城區", "dongchenqu"));
               p1.addCity(new City("朝陽區", "chaoyangqu"));
       ​
               Province p2 = new Province();
               p2.setName("江西");
               p2.addCity(new City("南昌", "南昌"));
               p2.addCity(new City("宜春", "yichun"));
       ​
               List<Province> provinceList = new ArrayList<Province>();
               provinceList.add(p1);
               provinceList.add(p2);
               return provinceList;
           }
       ​
           public static void fun() {
               List<Province> prolist = getProvinceList();
               XStream xstream = new XStream();
               xstream.alias("china", java.util.List.class);
               xstream.alias("province", Modol.Province.class);
               xstream.alias("city", Modol.City.class);
               xstream.useAttributeFor(Modol.Province.class, "name");
               xstream.addImplicitCollection(Modol.Province.class, "cities");
               xstream.omitField(Modol.City.class, "description");
               String s = xstream.toXML(prolist);
               System.out.println(s);
       ​
           }
       ​
           public static void main(String[] args) {
               fun();
           }
       }
       ​