JAVA 对象序列化成字符串和反序列

package lmiky.test.obj;    import java.io.ByteArrayInputStream;  import java.io.ByteArrayOutputStream;  import java.io.ObjectInputStream;  import java.io.ObjectOutputStream;  import java.util.ArrayList;  import java.util.HashMap;  import java.util.List;  import java.util.Map;    public class SerTest {        /**      * 方法说明      * @author lmq0382       * @date 2012-6-11      * @param args      */      public static void main(String[] args) throws Exception {          List<HashMap<String, String>> list = new ArrayList<HashMap<String, String>>();          HashMap<String, String> map = new HashMap<String, String>();          map.put("number", "123");          map.put("name", "test");          list.add(map);          HashMap<String, String> map2 = new HashMap<String, String>();          map2.put("number", "1232");          map2.put("name", "test2");          list.add(map2);                    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();          ObjectOutputStream objectOutputStream = new ObjectOutputStream(byteArrayOutputStream);          objectOutputStream.writeObject(list);            String serStr = byteArrayOutputStream.toString("ISO-8859-1");          serStr = java.net.URLEncoder.encode(serStr, "UTF-8");                    objectOutputStream.close();          byteArrayOutputStream.close();                    System.out.println(serStr);                            String redStr = java.net.URLDecoder.decode(serStr, "UTF-8");          ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(redStr.getBytes("ISO-8859-1"));          ObjectInputStream objectInputStream = new ObjectInputStream(byteArrayInputStream);           List<HashMap<String, String>> newList = (List<HashMap<String, String>>)objectInputStream.readObject();           objectInputStream.close();          byteArrayInputStream.close();                      for(Map m : newList) {              System.out.println(m.get("number") + " " + m.get("name"));          }      }    }