我想通过作为 Python（客户端）和 Java（服务器）的套接字从 Python 向 Java 发送一个对象，但是我不能这样做，我只能看到这个：

无效的流标头：8003635F

我尝试使用 Python-Python 和 Java-Java，没有任何不便。我想知道我的代码是错误的还是我忘记了一些东西。我会留意任何回应。 附代码：

Java 代码

public static void main(String[] args) {
        int port = 10002;
        try {
            ServerSocket server = new ServerSocket(port);
            System.out.println("Waiting for clients...");
            Socket client = server.accept();
            System.out.println("Connect: " + client.getInetaddress());
            Vehicle car;
            ObjectInputStream ois = new ObjectInputStream(client.getInputStream());
            car = (Vehicle) ois.readObject();
            System.out.println("Brand: " + car.getBrand() + "Model: " + coche.getModel());
        } catch (IOException ex) {
            System.out.println(ex.getMessage());
        } catch (ClassnotFoundException ex) {
            System.out.println(ex.getMessage());
        }
    }
}
class Vehicle implements Serializable {

    private String brand;
    private String model;

    public Vehicle(String brand,String model) {
        this.brand = brand;
        this.model = model;
    }

    public String getBrand() {
        return brand;
    }

    public void setBrand(String brand) {
        this.brand = brand;
    }

    public String getModel() {
        return model;
    }

    public void setModel(String model) {
        this.model = model;
    }

    @Override
    public String toString() {
        return "Vehicle{" + "brand=" + brand + ",model=" + model + '}';
    }
}

Python 代码

class Vehicle():
    def __init__(self,brand,model):
        self.brand = brand
        self.model = model
        
    def show(self):
        print("Brand: ",self.brand,"\nmodel: ",self.model)

car = Vehicle("Mazda","3") 
sock = socket.socket(socket.AF_INET,socket.SOCK_STREAM) 
serverAddress = ("172.16.4.18",10002) 
sock.connect(serverAddress)
sock.send(pickle.dumps(car)) 
sock.close()