Java Socket编程 消息接收和发送类

import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.PrintStream; import java.net.InetAddress; import java.net.Socket; import java.net.UnknownHostException; //客户端 public class ReceiverThread_A extends Thread { private Socket socket; private BufferedReader br; private PrintStream ps; private String ReadLine = ""; public ReceiverThread_A() { try { socket = new Socket(InetAddress.getLocalHost(), 5698); br = new BufferedReader(new InputStreamReader( socket.getInputStream())); ps = new PrintStream(socket.getOutputStream()); } catch (UnknownHostException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } public PrintStream getPrintStream() { return ps; } @Override public void run() { try { while ((ReadLine = br.readLine()) != null) { if (ReadLine == "END") { break; } System.out.println(ReadLine); } } catch (IOException e) { e.printStackTrace(); } } } import java.io.PrintStream; public class SenderThread_A extends Thread { private PrintStream ps; private String Message = ""; private boolean isRunning; public SenderThread_A(PrintStream ps) { this.ps = ps; isRunning = true; } public synchronized void sendMessage(String Message) { this.Message = Message; notify(); } public boolean isRunning() { return isRunning; } public void setRunning(boolean isRunning) { this.isRunning = isRunning; notify(); } @Override public synchronized void run() { while (isRunning) { if (Message == "") { try { wait(); } catch (InterruptedException e) { e.printStackTrace(); } } if (Message == "") { break; } else { ps.println(Message); ps.flush(); } Message = ""; } } } 服务器端

import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.PrintStream; import java.net.ServerSocket; import java.net.Socket; public class ReceiverThread_B extends Thread { private ServerSocket serverSocket; private Socket socket; private BufferedReader br; private PrintStream ps; private String ReadLine = ""; public ReceiverThread_B() { try { serverSocket = new ServerSocket(5698); } catch (IOException e) { e.printStackTrace(); } } public PrintStream getPrintStream() { return ps; } @Override public void run() { try { socket = serverSocket.accept(); br = new BufferedReader(new InputStreamReader( socket.getInputStream())); ps = new PrintStream(socket.getOutputStream()); } catch (IOException e1) { e1.printStackTrace(); } try { while ((ReadLine = br.readLine()) != null) { if (ReadLine == "END") { break; } System.out.println(ReadLine); } } catch (IOException e) { e.printStackTrace(); } } }