怎么传多组text和图片?

Question

我用socket方式做了个client-server系统,需要进行文字和图片的传输,我现在已经能传一组文字和图片,请问怎么传多组,组数可能不定~能给洋例代码吗 谢谢
这是我的代码
server: import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.net.ServerSocket;
import java.net.Socket;public class ServerSender {
    public static void main(String[] args) {
        System.out.println("Server Started.");
        try {
            ServerSocket serverSocket = new ServerSocket(8888);
            System.out.println("accepting client connection.");
            Socket socket = serverSocket.accept();
            DataOutputStream dos = new DataOutputStream(socket.getOutputStream());
            dos.writeUTF("send text first then send a picture");
            FileInputStream fis = new FileInputStream("D:\\123.jpg");
            byte[] buffer = new byte[1024];
            int len;
            while (((len = fis.read(buffer))>0))
                dos.write(buffer, 0, len);
            fis.close();
            dos.flush();
            dos.close();
        }catch(Exception e){}
    }}client:import java.io.DataInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;public class ClientReceiver {
    public static void main(String[] args) throws UnknownHostException, IOException {
        Socket server = new Socket("192.168.1.64", 8888);
        DataInputStream dis = new DataInputStream(
                server.getInputStream());
        System.out.println("Server发来的字符串是：" + dis.readUTF());
        FileOutputStream fos = new FileOutputStream("D:\\copy.gif");
        byte[] buffer = new byte[1024];
        int len;
        while (((len = dis.read(buffer))>0))
            fos.write(buffer, 0, len);
        dis.close();
        fos.flush();
        fos.close();
        server.close();
    }
}