将ArrayList序列化

private static byte[] getSerializedBytes(
   ArrayList<String> list) {
  if (null == list || list.size() < 0)
   return null;

  try {
   ByteArrayOutputStream bo = new ByteArrayOutputStream();
   ObjectOutputStream os = new ObjectOutputStream(bo);
   os.writeObject(list);
   return bo.toByteArray();
  } catch (IOException e) {
   return null;
  }
 }