Question

我正在尝试创建一个简单的client/server socket app。我遇到的问题是如何制作，我应该把它放在哪里，一部分将在客户端询问输入，然后在服务器端打印出相同的输入。我试过但没有成功。

GOAL ：在Client类的控制台中，当用户输入例如＆＃34;我的名字是Mike＆＃34;时，我想要的是当时在Server的控制台上字符串＆＃34;我的名字是Mike＆＃34;打印出新的一行。

主要

public class Main {
public static void main(String[] args) {
        System.out.println("The server has been summoned.\n");
        System.out.println("The server is waiting for client to come...");
        try {
            ServerSocket servertest = new ServerSocket(2014);
            while (true) {
                try {
                    Socket ser = servertest.accept();
                    new Server.ThreadSer(ser).start();
                } catch (IOException e) {}
            }
        } catch (IOException e) {System.err.println(e);}       
}}}

服务器

public class Server {

    public static class ThreadSer extends Thread {
        private Socket s;
        public ThreadSer(Socket s) {
            this.s = s;
}
        @Override
        public void run() {
            try {
              String response = "This is the IP: " + s.getLocalAddress() + " that has come via port: "
                        + s.getLocalPort() + "\r\n";
                OutputStream out = s.getOutputStream();
                out.write(response.getBytes());

            } catch (IOException e) { System.err.println(e); }
}}}

客户端

public class Client {

    public static void main(String[] args) throws UnknownHostException, IOException {
        Socket socket = new Socket("localhost", 2014);
        new OutputThread(socket.getInputStream()).start();
}

    public static class OutputThread extends Thread {
        private InputStream inputstream;
        public OutputThread(InputStream inputstream) {
            this.inputstream = inputstream;
}
        @Override
        public void run() {
            BufferedReader input = new BufferedReader(new InputStreamReader(inputstream));
            while (true) {
                try {
                    String line = input.readLine();
                    System.out.println(line);
                } catch (IOException exception) {
                    exception.printStackTrace();
                    break;
}}}}}

我在代码中遗漏了一些内容。

Answer 1

在您的客户端中，您不需要从输出流所需的服务器读取线路以将字符串发送到服务器：

示例：

客户

中的

     public static class OutputThread extends Thread {
        private InputStream inputstream;
        Scanner scanner;
        String message;
        public OutputThread(OutputStream outputstream) {
            this.inputstream = inputstream;
}
        @Override
        public void run() {
            ObjectOutputStream output = new ObjectOutputStream(outputstream);
            scanner = new Scanner(System.in);
            while (true) {
                try {
                    System.out.print("InputMessage: ");
                    message = scanner.nextLine();
                    System.out.println(message);
                    output.writeObject(message); //send the string to the server
                output.flush();
                } catch (IOException exception) {
                    exception.printStackTrace();
                    break;
}}}}}

它做的是它要求输入消息然后通过使用输出流向服务器发送消息。

服务器中
：

public class Server { public static class ThreadSer extends Thread { private Socket s; public ThreadSer(Socket s) { this.s = s; } @Override public void run() { try { String response = "This is the IP: " + s.getLocalAddress() + " that has come via port: " + s.getLocalPort() + "\r\n"; ObjectInputStream input = new ObjectInputStream(s.getInputStream()); while(true){ Object object = input.readObject(); String command = ((String) object).trim(); //trim the string System.out.println(command); } } catch (IOException e) { System.err.println(e); } }}}

它正在做的是循环并读取客户端的行使用输入流发送给它。然后将它打印到服务器的控制台。

来自客户端的字符串在java中的Client / Socket应用程序中的Socket控制台上打印出来

1 个答案: