用 XStream 序列化/反序列化 XML 为 Java 对象（实例）

Posted on 2007-06-05 19:06 Stephen Wong 阅读(1224) 评论(0)  编辑 收藏 网摘 所属分类: 数据持久化、序列化 , WebService , Java

package  org.stephencat.test;
import  com.thoughtworks.xstream. * ;
import  java.util. * ;

/**
 * 测试 XStream 序列化和反序列化
 *  @author  stephen.wjj
 *
  */
public   class  XStreamTest {
    
     /**
     * 测试序列化
      */
     public   static   void  TestSerializer(){
        System.out.println( " ===== Testing serializer ===== " );
        Person p1  =   new  Person();
        p1.setName( " AAA " );
        Person p2  =   new  Person();
        p2.setName( " BBB " );
        Person p3  =   new  Person();
        p3.setName( " CCC " );
        
        Group g  =   new  Group();
        g.getPersons().add(p1);
        g.getPersons().add(p2);
        g.getPersons().add(p3);
        g.setName( " KFC " );
        
        XStream xstream  =   new  XStream();
        
         //  声明标记名称对应的 Java 类
        xstream.alias( " group " , Group. class );
        xstream.alias( " person " , Person. class );
        
         //  把 Group 的 name 属性视为 XML 属性
        xstream.useAttributeFor(Group. class ,  " name " );
         //  忽略 XML 中的 <persons></persons> 标记
        xstream.addImplicitCollection(Group. class ,  " persons " );
        
        System.out.println(xstream.toXML(g));
    }
    
     /**
     * 测试反序列化
      */
     public   static   void  TestDeserializer(){
        System.out.println( " ===== Testing deserializer ===== " );
        String xml  =   " <group name=/ " KFC/ " ><person><name>AAA</name></person><person><name>BBB</name></person><person><name>CCC</name></person></group> " ;
        XStream xstream  =   new  XStream();
        
         //  声明标记名称对应的 Java 类
        xstream.alias( " group " , Group. class );
        xstream.alias( " person " , Person. class );
        
         //  把 Group 的 name 属性视为 XML 属性
        xstream.useAttributeFor(Group. class ,  " name " );
         //  忽略 XML 中的 <persons></persons> 标记
        xstream.addImplicitCollection(Group. class ,  " persons " );
        
        Group g  =  (Group) xstream.fromXML(xml);
        System.out.println( " Group name =  " + g.getName());
        System.out.println( " Group has persons =  " + g.getPersons().size());
        System.out.println( " Group persons: " );
         if (g.getPersons().size()  >   0 ){
            Iterator it  =  g.getPersons().iterator();
             while (it.hasNext()){
                Person p  =  (Person)it.next();
                 if (p != null ){
                    System.out.println(p.getName());
                } else {
                    System.out.println( " Err! person instance is null! " );
                }
            }
        }
    }

/**
     *  @param  args
      */
     public   static   void  main(String[] args) {
         //  TODO Auto-generated method stub
        TestSerializer();
        TestDeserializer();

}

}

=====  Testing serializer  =====
<group name = " KFC " >
  <person>
    <name>AAA</name>
  </person>
  <person>
    <name>BBB</name>
  </person>
  <person>
    <name>CCC</name>
  </person>
</group>
=====  Testing deserializer  =====
Group name  =  KFC
Group has persons  =   3
Group persons:
AAA
BBB
CCC

<? xml version="1.0" ?>

package  org.stephencat.test;
import  java.util. * ;

/**
 * 包含若干 Person 的 Group 
 *  @author  stephen
 *
  */
public   class  Group {
    
     /**
     * Group名称<br>
     * 需求规定这是 XML 中的一个属性
      */
     private  String name;
     /**
     * 需求规定这是一堆若干数量的 person 标记
      */
     private  List persons  =   new  ArrayList();
    
     public  String getName() {
         return  name;
    }
     public   void  setName(String name) {
         this .name  =  name;
    }
     public  List getPersons() {
         return  persons;
    }
     public   void  setPersons(List persons) {
         this .persons  =  persons;
    }

}