echoclient.java

《java网络编程精解》的源代码

import java.net.*;
import java.io.*;
import javax.net.ssl.*;
import java.security.*;

public class EchoClient {
  private String host="localhost";
  private int port=8000;
  private SSLSocket socket;
  
  public EchoClient()throws IOException{
    SSLSocketFactory factory=(SSLSocketFactory)SSLSocketFactory.getDefault();
    socket=(SSLSocket)factory.createSocket(host,port);
    String[] supported=socket.getSupportedCipherSuites();
    socket.setEnabledCipherSuites(supported);
    System.out.println(socket.getUseClientMode()? "客户模式":"服务器模式");
  }
  public static void main(String args[])throws IOException{
    new EchoClient().talk();
  }
  private PrintWriter getWriter(Socket socket)throws IOException{
    OutputStream socketOut = socket.getOutputStream();
    return new PrintWriter(socketOut,true);
  }
  private BufferedReader getReader(Socket socket)throws IOException{
    InputStream socketIn = socket.getInputStream();
    return new BufferedReader(new InputStreamReader(socketIn));
  }
  public void talk()throws IOException {
    try{
      BufferedReader br=getReader(socket);
      PrintWriter pw=getWriter(socket);
      BufferedReader localReader=new BufferedReader(new InputStreamReader(System.in));
      String msg=null;
      while((msg=localReader.readLine())!=null){

        pw.println(msg);
        System.out.println(br.readLine());

        if(msg.equals("bye"))
          break;
      }
    }catch(IOException e){
       e.printStackTrace();
    }finally{
       try{socket.close();}catch(IOException e){e.printStackTrace();}
    }
  }
}


/****************************************************
 * 作者：孙卫琴                                     *
 * 来源：<<Java网络编程精解>>                       *
 * 技术支持网址：www.javathinker.org                *
 ***************************************************/