Question

首先，我很抱歉我的英语。英语不是我的母语。所以，首先我创建了客户端。

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

public class Main {
    public static void main (String [] args) {
        try (Socket socket = new Socket ("IP", 4747)){
            InputStream input = socket.getInputStream();
            BufferedReader reader = new BufferedReader (new InputStreamReader (input)); 
            System.out.println(reader.readLine());

        } catch (IOException ex) {
            System.out.println("Client message " + ex.getMessage());
            ex.printStackTrace();
        }
    }
}

and I create Server Side as well.

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

public class Main {
    public static void main (String [] args) {
        try (ServerSocket serverSocket = new ServerSocket (4747)){
            System.out.println("Server is listing client");

            while (true) {
                System.out.println("Connection with new client");
                Socket socket = serverSocket.accept();

                OutputStream output = socket.getOutputStream();
                PrintWriter sendMessage = new PrintWriter (output);
                sendMessage.println("Hello from server");
            }
        } catch (IOException ex) {
            System.out.println("Server message " + ex.getMessage());
            ex.printStackTrace();
        }
    }
}

关于IP。我使用命令ipconfig从命令行获取IP。我的问题。服务器见客户端。但不向客户端发送消息，客户端无法从服务器获取消息。我的错误是什么？

如何用Java创建简单的TCP客户端和服务器？

0 个答案: