chatserver.java

采用eclipse实现了聊天室的简单框架功能,能够进行简单的通信

package com.ata.server;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.EOFException;
import java.io.IOException;
import java.net.*;
import java.util.*;
public class ChatServer {
	boolean started = false;
	ServerSocket ss = null;
	List<Client> clients=new ArrayList<Client>();
	public static void main(String[] args) {

		new ChatServer().start();
	}

	public void start() {
		try {
			ss = new ServerSocket(8888);
			started = true;
		} catch (BindException e) {
			System.out.println("端口使用中！");
			System.exit(0);
		} catch (IOException e) {
			e.printStackTrace();
		}
		try {
			
			while (started) {
				Socket s = ss.accept();
				Client client = new Client(s);
				System.out.println("a client connected");
                new Thread(client).start();
                clients.add(client);
			}
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			try {
				ss.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}

	class Client implements Runnable {
		private Socket s;
		private DataInputStream dis = null;
		private DataOutputStream dos=null;
		private boolean bConnected = false;
      
		public Client(Socket s) {
			this.s = s;
			try {
				dis = new DataInputStream(s.getInputStream());
				dos=new DataOutputStream(s.getOutputStream());
				bConnected = true;
			} catch (IOException e) {
				e.printStackTrace();
			}
		}

		public void send(String str){
			try {
				dos.writeUTF(str);
			} catch (IOException e) {
			
				e.printStackTrace();
			}
		}
		
		public void run() {
			try {
				while (bConnected) {
					String str = dis.readUTF();
					System.out.println(str);
					for(int i=0;i<clients.size();i++){
						Client client=clients.get(i);
						client.send(str);
					}
				}
				}catch(SocketException e){
					System.out.println("退出");
			} catch (EOFException e) {
				System.out.println("Client closed!");
			} catch (IOException e) {
				e.printStackTrace();
			} finally {
				try {
					if (dis != null)
						dis.close();
					if(dos!=null)
						dos.close();
					if (s != null)
						s.close();
				} catch (IOException e1) {
					e1.printStackTrace();
				}
			}

		}
	}
}