TCP程序学习

服务器，多线程

import java.net.*; import java.io.*; class Servicer implements Runnable { Socket s; public Servicer(Socket s) { this.s = s; } public void run() { try { InputStream ips=s.getInputStream(); OutputStream ops=s.getOutputStream(); BufferedReader br = new BufferedReader(new InputStreamReader(ips)); DataOutputStream dos = new DataOutputStream(ops); while(true) { String strWord = br.readLine(); //System.out.println(strWord +":" + strWord.length()); if(strWord. equalsIgnoreCase("quit")) break; String strEcho = (new StringBuffer(strWord).reverse()).toString(); //dos.writeBytes(strWord +"---->"+ strEcho +"/r/n"); dos.writeBytes(strWord + "---->"+ strEcho + System.getProperty("line.separator")); } br.close(); //关闭包装类，会自动关闭包装类中所包装的底层类。所以不用调用ips.close() dos.close(); s.close(); }catch(Exception e){e.printStackTrace();} } } class TcpServer { public static void main(String [] args) { try { ServerSocket ss=new ServerSocket(8001); while(true) { Socket s=ss.accept(); new Thread(new Servicer(s)).start(); } //ss.close(); }catch(Exception e){e.printStackTrace();} } }

 

客户端程序

import java.net.*; import java.io.*; public class TcpClient { public static void main(String [] args) { try { //Socket s=new Socket(InetAddress.getByName("192.168.0.213"),8001); if(args.length < 2) { System.out.println("Usage:java TcpClient ServerIP ServerPort"); return; } Socket s=new Socket( InetAddress.getByName(args[0]),Integer.parseInt(args[1])); InputStream ips=s.getInputStream(); OutputStream ops=s.getOutputStream(); BufferedReader brKey = new BufferedReader(new InputStreamReader(System.in)); DataOutputStream dos = new DataOutputStream(ops); BufferedReader brNet = new BufferedReader(new InputStreamReader(ips)); while(true) { String strWord = brKey.readLine(); dos.writeBytes(strWord + System.getProperty("line.separator")); if(strWord.equalsIgnoreCase("quit")) break; else System.out.println(brNet.readLine()); } dos.close(); brNet.close(); brKey.close(); s.close(); }catch(Exception e){e.printStackTrace();} } }

 

F:/test/tcp>javac TcpServer.java

 

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F:/test/tcp>java TcpClient 127.0.0.1 8001
hi
hi---->ih
efg
efg---->gfe
quit