package text;

import java.io.*;
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().start1();

	}

	public void start1() {
		try {
			ss = new ServerSocket(8888);
			started = true;
		} catch (BindException e) {
			System.out.println("端口使用中-----请关闭相关socket");
			System.exit(0);

		} catch (IOException e) {
			System.out.println("监听失败--可能原因服务器启动失败");
		}
		try {

			while (started) {

				Socket s = ss.accept();
				Client c = new Client(s);
				new Thread(c).start();
				clients.add(c);
			}
		} 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 bconnection = false;

		public Client(Socket s) {
			this.s = s;
			try {
				dis = new DataInputStream(s.getInputStream());
				dos = new DataOutputStream(s.getOutputStream());
				bconnection = true;

			} catch (IOException e) {
				e.printStackTrace();
			}
		}

		public void send(String str) {
			try {
				dos.writeUTF(str);
			} catch (IOException e) {
				clients.remove(this);
				System.out.println("对方退出了，我从内存去掉了");
			}
		}

		public void run() {
			//Client c = null;
			try {
				while (bconnection) {

					String str = dis.readUTF();
					System.out.println(str);
					/*
					 * for(Iterator<Client> it =
					 * clients.iterator();it.hasNext();){ Client c = it.next();
					 * c.send(str);//需要锁定，故不采用 }
					 */
					for (int i = 0; i < clients.size(); i++) {
						Client c = clients.get(i);
						c.send(str);
					}

				}
			}

			catch (EOFException e) {
				System.out.println("Client close!!!");
			}

			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();
				}
			}

		}
	}
}