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java中的tcp会话

发布于 2024-10-08 14:15:03 字数 132 浏览 1 评论 0原文

我想一次将多个客户端连接到服务器，并将服务器与所有客户端进行通信。服务器如何识别每个客户端。以及如何向特定客户端发送数据？

考虑一下，有 3 个客户 A、B、C。所有客户端都连接到服务器。服务器想要向 B 发送消息。它是如何完成的？

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余厌 2024-10-15 14:15:08

如果我理解正确的话 - 您所需要的不是为一个连接绑定套接字。
您的客户端代码将如下所示：

客户端类：

public class TCPClient {

 public TCPClient(String host, int port) {

        try {
            clientSocket = new Socket(host, port);
        } catch (IOException e) {
            System.out.println(" Could not connect on port: " + port + " to " + host);
        }
}

服务器（主机）类：

   public class TCPListener {

    public TCPListener(int portNumber) {
            try {
                serverSocket = new ServerSocket(portNumber);
            } catch (IOException e) {
                System.out.println("Could not listen on port: " + portNumber);
            }
            System.out.println("TCPListener created!");
                    System.out.println("Connection accepted");
            try {
                while (true) {
                    Socket clientConnection = serverSocket.accept();

    //every time client's class constructor called - line above will be executed and new connection saved into Socket class.
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
    }

这是最简单的示例。更多内容可以在这里找到：
http://www.oracle.com/technetwork/java/socket-140484.html

If i understand you right - all you need is not bind socket for one connection.
Your client code will looks like that:

Client class:

public class TCPClient {

 public TCPClient(String host, int port) {

        try {
            clientSocket = new Socket(host, port);
        } catch (IOException e) {
            System.out.println(" Could not connect on port: " + port + " to " + host);
        }
}

Server(host) class:

   public class TCPListener {

    public TCPListener(int portNumber) {
            try {
                serverSocket = new ServerSocket(portNumber);
            } catch (IOException e) {
                System.out.println("Could not listen on port: " + portNumber);
            }
            System.out.println("TCPListener created!");
                    System.out.println("Connection accepted");
            try {
                while (true) {
                    Socket clientConnection = serverSocket.accept();

    //every time client's class constructor called - line above will be executed and new connection saved into Socket class.
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
    }

That is simplest example. More can be found here:
http://www.oracle.com/technetwork/java/socket-140484.html

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