java - 如何通过Java套接字正确设置服务器部分？

Question

我已经编写了服务器和客户端部分，请参阅代码:

//this I run on my firt PC
public class TCPServer {

 public static void main(String[] args) throws Exception{

    TCPServer server = new TCPServer();
    server.run();
 }

 public void run() throws Exception{
    ServerSocket socket = new ServerSocket(6789);
    Socket SOCK = socket.accept();
    BufferedReader BR = new BufferedReader(new InputStreamReader(SOCK.getInputStream()));

    String msg = BR.readLine();
    System.out.println(msg);

    if(msg != null){
        PrintStream PS = new PrintStream(SOCK.getOutputStream());
        PS.print("MESSAGE RECEIVED");
    }
 }
}


//This I run on my notebook
public class TCPClient {

        public static void main(String args[]) throws Exception{

            TCPClient client = new TCPClient();
            client.run();
        }

        public void run() throws Exception{
            Socket clientSocket = new Socket("192.168.88.77",6789);
            PrintStream PS = new  PrintStream(clientSocket.getOutputStream());
            PS.print("Hello from GLADIS VLADLEN");

            BufferedReader BR = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));

            String msg = BR.readLine();
            System.out.println(msg);

        }
}

运行此应用程序后，没有任何反应。只有在我停止客户端应用程序消息后，服务器部分才会收到消息。为什么会出现这种情况？我尝试关闭防火墙，但这对我没有帮助。

Answer 1

服务器和客户端都使用 BufferedReader#readLine() 读取一行。但是，PrintStream 正在发送不带行终止符的字符。

尝试调用 println 而不是 print。