distributeb.java

文件为java程序

package org.hsuper;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.UnknownHostException;

public class DistributeB {

	/**
	 * @param args
	 */
	private static final String KS="---hello,huachao---";
	private static final String ask="say hello to A";
	private String KB;
	private ServerSocket ss=null;
	private Socket rsocket=null;
	private Socket ssocket=null;
	private String host="";
	private int sport;
	private int rport;
	private OutputStream os=null;
	private InputStream is=null;
	private InputStreamReader isr=null;
	private BufferedReader br=null;
	
	public DistributeB()
	{
		KB=Double.toString(Math.random()*1000);
	}
	
	public void receive(int rport )
	{
		try {
			ss=new ServerSocket(rport);
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		while(true)
		{
			try {
				rsocket=ss.accept();
				is=rsocket.getInputStream();
				isr=new InputStreamReader(is);
				br=new BufferedReader(isr);
				String read="";
				String message="";
				while((read=br.readLine())!=null)
				{
					message+=read;
					System.out.print(read+"\n");
				}
				if(message.equals(ask))
				{
					System.out.print("equals"+"\n");
					String toKA=StringUtils.encrypt(KB,KS);
					send("localhost",5000,toKA);
				}
				else{
					String msg=StringUtils.decrypt(message,KB);
					System.out.print(msg);
				}
				
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}finally{
				if(rsocket!=null)
					try {
						br.close();
						isr.close();
						is.close();
						rsocket.close();
						//serverSocket.close();
					} catch (IOException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
			}
		}
		
	}
	
	public void send(String host,int port,String date)
	{
		try {
			ssocket=new Socket(host,port);
			os=ssocket.getOutputStream();
			os.write(date.getBytes());
			
		} catch (UnknownHostException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally{
			if(ssocket!=null)
				try {
					os.close();
					ssocket.close();
					//serverSocket.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
		}
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		DistributeB db=new DistributeB();
		db.receive(5500);

	}

}