为什么我用 Java 编写的服务器和客户端不能工作？

Question

当我运行客户端时，我的服务器不断收到此错误：

Exception in thread "main" java.io.EOFException
    at java.io.DataInputStream.readInt(Unknown Source)
    at java.io.ObjectInputStream$BlockDataInputStream.readInt(Unknown Source)
    at java.io.ObjectInputStream.readInt(Unknown Source)
    at MyServer.main(MyServer.java:10)

这是服务器代码：

import java.net.*;
import java.io.*;

public class MyServer{
    public static void main(String[] args) throws IOException {

        ServerSocket serverSocket = new ServerSocket(40);
        Socket clientSocket = serverSocket.accept();
        ObjectInputStream in = new ObjectInputStream(clientSocket.getInputStream());
        System.out.println(in.readInt());
        serverSocket.close();
        System.exit(0);
    }
}

这是客户端代码：

import java.io.*;
import java.net.*;

public class MyClient {
    public static void main(String[] args) throws IOException {

        Socket socket = new Socket("localhost", 40);
        ObjectOutputStream out = new ObjectOutputStream(socket.getOutputStream());     
        out.writeInt(5);
        socket.close();
        System.exit(0);
    }
}

Answer 1

尝试添加

out.flush();

就在之前

socket.close();

Answer 2

在关闭Socket 之前，您应该先flush 您的ObjectOutputStream。