public static String[] byteArray2StringArray(byte[] raw) {
   ArrayList<String> strs = new ArrayList<String>();
   ByteArrayInputStream byteInput = new ByteArrayInputStream(raw);
   DataInputStream input = new DataInputStream(byteInput);
   try {
    while (input.available() > 0) {
     int length = input.readInt();
     if (length > input.available()) {
      return null;
     }
     byte[] data = new byte[length];
     input.read(data);
     String str;
     try {
      str = new String(data, "utf-8");
     } catch (java.io.UnsupportedEncodingException e) {
      str = new String(data);    }
     strs.add(str);   }
    String[] ret = new String[strs.size()];
    ret = strs.toArray(ret);
    return ret;
   } catch (IOException ex) {
    return null;
   }
  }