如何在Java中将多个对象发送到套接字

Question

Can anyone please advise how to send multiple serialized objects in java over a socket to a server?
currently my server gets always only the first object.

Client side:

public void communicate() throws UnknownHostException, IOException {
    carClientSocket = new Socket("localhost", 4444);
    carClientOR = new ObjectOutputStream(carClientSocket.getOutputStream());

    Car[] CarList = new Car[11];
    for ( int i = 1; i <=10; i++ ) {
        //Car alpha;
        CarList[i] = new Car("Alpha Romeo","GTI",1999+i);
    }
    for ( int i =1; i<= 10; i++) {
        carClientOR.writeObject(CarList[i]);
        carClientOR.flush();
        //carClientOR.reset();
    }
    carClientSocket.close();
}

Server Side

public void communicate() throws IOException, ClassNotFoundException {
CarServerSocket = new ServerSocket(4444);
    System.out.println("Server is ready and waiting for connection from client..\n");
    while (true) { 
        carSocket = CarServerSocket.accept();
        System.out.println("Server Connected");
        carServerIR = new ObjectInputStream(carSocket.getInputStream());
        Car alpha1 = (Car) carServerIR.readObject();
        System.out.println("Object received from car clinet: " + alpha1.getCarBrad() + " " + alpha1.getCarModel() + " " + alpha1.getCarYear());
    }
    //carSocket.close();
    //CarServerSocket.close();
}

Answer 1

The problem is on the server side, due to the call carSocket = CarServerSocket.accept(); being within the loop. It should be done once before the loop, and you should then get the other objects:

carSocket = CarServerSocket.accept();
while (true) { 
  System.out.println("Server Connected");
  carServerIR = new ObjectInputStream(carSocket.getInputStream());
  Car alpha1 = (Car) carServerIR.readObject();
  System.out.println("Object received from car clinet: " + alpha1.getCarBrad() + " " + alpha1.getCarModel() + " " + alpha1.getCarYear());
}