fileclient.java

利用Java开发的一个聊天程序

package myQQ;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;


public class FileClient extends Peer implements Runnable {
	private Thread exac;

	private Socket s;

	public FileClient(String ip, int port) {
		super();
		exac = new Thread(this);

		try {
			s = new Socket(ip, port);
			gui.setStatusContent("The fileclient started.");
		} catch (IOException e) {
			gui.setStatusContent("Could not create FileSocket.");
		}
	}

	public void start() {
		exac.start();
	}

	public void run() {

		String message = null;

		while (true) {
			switch (getStatus()) {
			case Utility.BEGIN_CONNECT:
				try {
					bis = new BufferedInputStream(s.getInputStream());
					bos = new BufferedOutputStream(s.getOutputStream());
					in = new BufferedReader(new InputStreamReader(s	.getInputStream()));
					out = new PrintWriter(s.getOutputStream());
					setStatus(Utility.CONNECTED);
				} catch (IOException e) {
					gui.setStatusContent("Could not create FilePipe.");
				}
				break;

			case Utility.CONNECTED:

					try {
						//firstly,to check the status is to be changed or not
						//if has been changed , then go out of the selection						
						Thread.sleep(100);
						if(getStatus()!=Utility.CONNECTED)
						break;
					} catch (InterruptedException e1) {
						e1.printStackTrace();
					}

				
				message = receive();
				if (message != null) {
					if (message.equals("DISCONNECT")) {
						setStatus(Utility.DISCONNECTING);
						send(Utility.MSG, "DISCONNECT");
						gui.setStatusContent("Diconnected.");
					}
					if (message.equals(Utility.RECV)) {
						setStatus(Utility.SENDING);
					}
					if (message.equals(Utility.REFU)) {
						gui.setStatusContent("Your friend refuse your attachement.");
					}					
				}
				break;
				
			case Utility.SENDING:
				try {
//					 send file thread sleep,wait receive file thread ready
					Thread.sleep(100);
				} catch (InterruptedException e) {
					e.printStackTrace();
				}
				sendFile();
				setStatus(Utility.CONNECTED);
				gui.setStatusContent("Transfered.");
				break;
				
			case Utility.RECVING:
				recvFile();
				setStatus(Utility.CONNECTED);
				gui.setStatusContent("Transfered.");
				break;	

			case Utility.DISCONNECTING:
				close();
				try{
					s.close();
				}catch(Exception e){
					gui.setStatusContent("Could not close.");
				}
				gui.setStatusContent("The client disconnected.");
				gui.reSet();
				return;
			}
			System.out.println("The client status is " + getStatus());

		}
	}

	public static void main(String[] args) throws Exception {
		gui = new GUI(Utility.CLIENT);

	}
}