java - 我的 Java 服务器端未读取来自 Java 客户端的更多传入消息

Question

我用Java创建简单的服务器-客户端程序我的服务器是

public class Server {
    private static ServerSocket serverSocket;
private static Socket clientSocket;
private static BufferedReader bufferedReader;
private static String inputLine;
/**
 * @param args the command line arguments
 */
public static void main(String[] args) {
   try
    {
        serverSocket = new ServerSocket(5000);
        clientSocket = serverSocket.accept();
        // Create a reader
         bufferedReader = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
        // Get the client message
        while((inputLine = bufferedReader.readLine()) != null)
        System.out.println(inputLine); //Print
            }catch(IOException e){
        System.out.println(e);
    }
}

}客户端是:

public class Client {
/**
 * @param args the command line arguments
 */
public static void main(String[] args) {
    String hostName = "localhost";
    try (
            Socket echoSocket = new Socket(hostName, 5000);
            PrintWriter out = new PrintWriter(echoSocket.getOutputStream(), true);
            BufferedReader in= new BufferedReader(new InputStreamReader(echoSocket.getInputStream()));
            BufferedReader stdIn = new BufferedReader(new InputStreamReader(System.in))) {
        String userInput;
        while ((userInput = stdIn.readLine()) != null) {
            out.println(userInput);
            System.out.println("echo: " + in.readLine());
        }
    } catch (UnknownHostException e) {
        System.err.println("Don't know about host " + hostName);
        System.exit(1);
    } catch (IOException e) {
        System.err.println("Couldn't get I/O for the connection to " + hostName);
        System.exit(1);
    }

}

}

为什么我的服务器不再读取？当我调试程序时，我的程序在服务器中时会脱离循环..我不知道为什么

Answer 1

你的服务器看起来没问题。您的服务器无法读取多次的原因是客户端上的这一行:

System.out.println("echo: " + in.readLine());

客户端期望服务器给出答复，但您的服务器不会发回任何内容。因此删除上面的行或让服务器发送响应。