xstream的Converter的使用

在网上看了下，有关xstream的Converter的使用的例子很少，这里做个简单的应用举例

文件格式如下：

<list>       <mapper neType="2g">            <sqlByType></sqlByType>            <sqlById></sqlById>            <types>                    <include>BTS</include>            </types>       </mapper>       <mapper neType="3g">             <types>                   <include>NODEB</include>             </types>       </mapper> </list>

实体类定义如下：

@XStreamAlias("mapper") public class NeTypeMapper {          @XStreamAsAttribute          public String neType ;            @XmlElement          public String sqlByType ;            @XmlElement          public String sqlById ;            @XStreamAlias("types")          public List<String> includeTypes = new ArrayList<String>(); }

转换器：

static class ListConverter extends AbstractCollectionConverter {          public ListConverter(Mapper mapper) {                     super(mapper);           }           @Override           public boolean canConvert(Class type) {                    return type.equals(ArrayList.class);            }            @Override           public void marshal(Object source, HierarchicalStreamWriter writer,                        MarshallingContext context) {                  List<String> list = (List<String>)source;                    ListIterator<String> iter = list.listIterator() ;                  String value = null ;                  while(iter.hasNext()){                        value = iter.next() ;                        ExtendedHierarchicalStreamWriterHelper.startNode(writer,"include",List.class);                         writer.setValue(value);                         writer.endNode();              }   }   @Override   public Object unmarshal(HierarchicalStreamReader reader,         UnmarshallingContext context) {                 String nodename = reader.getNodeName() ;                 //System.out.println(nodename);                 List<String> list = new ArrayList<String>();                 while(reader.hasMoreChildren()){                          reader.moveDown();                       nodename = reader.getNodeName() ;                       //System.out.println(nodename+"-->"+reader.getValue());                       list.add(reader.getValue()) ;                       reader.moveUp();                  }                  return list;         }  }

使用方式：

XStream xs = new XStream() ;    xs.processAnnotations(NeTypeMapper.class);    xs.registerLocalConverter(NeTypeMapper.class, "includeTypes",           new ListConverter(                     new DefaultMapper(XStream.class.getClassLoader())) );     File file = new File(filePath) ;  //filePath:文件的路径     try {     List<NeTypeMapper> list = (List<NeTypeMapper>)xs                             .fromXML(new FileInputStream(file)) ;