java - 套接字:BufferedReader/InputStream 和 BufferedWriter/OutputStream 不起作用

Question

所以我尝试使用 BufferedReader 和 BufferedWriter 制作服务器/客户端解决方案，但它不起作用!仅使用 DataInputStream 和 DataOutputStream 工作得很好，但 Buffered 对象没有打印任何内容。我的错误在哪里？

public class TServer {

   static final int PORT = 8001;
   static final int QUEUE = 50;

   public static void main(String[] args) {
       try (ServerSocket serverSocket = new ServerSocket(PORT, QUEUE)) {
           Socket socket = serverSocket.accept();
           BufferedReader input = new BufferedReader(new InputStreamReader(socket.getInputStream()));
           BufferedWriter output = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));

           System.out.println(input.readLine());
           output.write("this is the server!");
           output.flush();
       } catch (IOException e) {
           System.out.println(e.getMessage());
           e.printStackTrace();
       }
   }
}


public class TClient {

   static final String HOST = "localhost";
   static final int PORT = 8001;

   public static void main(String[] args) {
       try (Socket socket = new Socket(HOST, PORT)) {
           BufferedReader input = new BufferedReader(new InputStreamReader(socket.getInputStream()));
           BufferedWriter output = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));

           output.write("this is the client");
           output.flush();
           System.out.println(input.readLine());
       } catch (IOException e) {
           System.out.println(e.getMessage());
           e.printStackTrace();
       }
   }
}

Answer 1

Using only DataInputStream and DataOutputStream worked perfectly fine, but nothing printed out with the Buffered objects.

客户端正在发送以下内容:

output.write("this is the client");

服务器正在尝试使用 BufferedReader 读取一行:

System.out.println(input.readLine());

但是不会收到任何行，因为没有发送行结束符(因此，该方法将阻塞(服务器也是如此，它不发送行结束符))。请参阅 API BufferedReader ，其中指出:

Reads a line of text. A line is considered to be terminated by any one of a line feed ('\n'), a carriage return ('\r'), or a carriage return followed immediately by a linefeed.