简单的socket编程

1.socket 服务器搭建

实例化socket服务器，循环获取请求

package com.orange.util;

import java.io.IOException;

import java.net.ServerSocket;

import java.net.Socket;

import java.util.Timer;

import java.util.TimerTask;

import java.util.concurrent.Executors;

import java.util.concurrent.ScheduledExecutorService;

import java.util.concurrent.TimeUnit;

/**

 * socket服务器

 *

 * @author Chengjq

 *

 */

public class SocketServer {

    public static int count = 0;

    public static void main(String[] args) {

        // TODO 自动生成的方法存根

        int port = 4404;

        // 首先直接创建serversocket

        ServerSocket serverSocket = null;

        Socket socket = null;

        try {

            serverSocket = new ServerSocket(port);

            System.out.println("启动socketServer成功,等待客户端的连接");

            while (true) {

                socket = serverSocket.accept();

                System.out.println("有新的客户端请求连接");

                SocketThread st = new SocketThread(socket);

                st.start();

                ChatManager.getChatManager().add(st);

                //启动定时任务，如果10s内没有进程

                /*Runnable runnable = new Runnable() {

                    int clientNum = 0;

                    public void run() {

                        // task to run goes here

                        clientNum = ChatManager.getChatManager().vector.size();

                        System.out.println("剩余客户端数量:"+clientNum);

                        if(clientNum ==0 ){

                            System.out.println("连接超时，或者无客户端连接，关闭serverSocket");

                            //关闭socket

                            //.....

                        }

                    }

                };

                ScheduledExecutorService service = Executors

                        .newSingleThreadScheduledExecutor();

                // 第二个参数为首次执行的延时时间，第三个参数为定时执行的间隔时间

                service.scheduleAtFixedRate(runnable, 2, 10, TimeUnit.SECONDS);  */

            }

        } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        } finally {

            System.out.println("serverSocket已超时");

            try {

                socket.close();

                serverSocket.close();

            } catch (IOException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            }

        }

    }

}

SocketThread类实现多线程通信

package com.orange.util;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.PrintWriter;

import java.net.ServerSocket;

import java.net.Socket;

/**

 * SocketThread实现多线程通信

 *

 * @author Administrator

 *

 */

public class SocketThread extends Thread {

	ServerSocket serverSocket = null;

	Socket socket = null;

	public SocketThread(ServerSocket serverSocket,Socket socket) {

		super();

		this.serverSocket = serverSocket;

		this.socket = socket;

	}

	public SocketThread(Socket socket) {

		super();

		this.socket = socket;

	}

	public void out(String out) {

        try {

            socket.getOutputStream().write(out.getBytes("utf-8"));

        } catch (IOException e) {

            e.printStackTrace();

        }

    }

	public void publish(String out){

		ChatManager.getChatManager().publish(this, out);

	}

	@Override

	public void run() {

		// TODO Auto-generated method stub

		BufferedReader socketIn = null;

		PrintWriter socketOut = null;

		String inMess = null;

		try {

			socketIn = new BufferedReader(new InputStreamReader(socket.getInputStream()));

			socketOut = new PrintWriter(socket.getOutputStream());

			while (true) {

				inMess = socketIn.readLine();

				publish(inMess);

				if("bye".equals(inMess)){

					ChatManager.getChatManager().remove(this);

				}

			}

		} catch (IOException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		} finally {

			try {

				System.out.println("已结束当前会话");

				socketOut.close();

				socketIn.close();

				socket.close();

			} catch (IOException e) {

				// TODO Auto-generated catch block

				e.printStackTrace();

			}

		}

	}

}

　　单例Chatmanage，对所有客户端线程管控处理

package com.orange.util;

import java.util.Vector;

public class ChatManager {

    // 实现单例化

    private ChatManager() {

    };

    private static final ChatManager cm = new ChatManager();

    public static ChatManager getChatManager() {// 返回值为ChatManager

        return cm;

    }

    // 单例化完成

    Vector<SocketThread> vector = new Vector<SocketThread>();

    public void add(SocketThread st) {// 为当前集合添加SocketThread对象

        vector.add(st);

    }

    public void remove(SocketThread st) {// 当前客户端关闭连接

        vector.remove(st);

    }

    public void removeall() {// 关闭所有连接

        for (int i = 0; i < vector.size(); i++) {// 遍历所有的线程

            SocketThread csChatSocket = vector.get(i);

            if(csChatSocket!=null){

                vector.remove(csChatSocket);

            }

        }

    }

    // 某一个线程向其他的客户端发送信息

    public void publish(SocketThread st, String out) {

        for (int i = 0; i < vector.size(); i++) {// 遍历所有的线程

            SocketThread csChatSocket = vector.get(i);

            if (csChatSocket != st)// 判断不是当前线程就发送此消息

                csChatSocket.out(out + "\n");

        }

    }

    // 向当前线程发信息

    public void publish_present(SocketThread st, String out) {

        st.out(out + "\n");

    }

}

至此，服务器搭建完成

2.客户端（创建两个客户端）

客户端1（监听指定服务器，通过控制台输入消息进行服务器与客户端以及客户端之间的通信，）

package com.orange;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.PrintWriter;

import java.net.Socket;

import java.net.UnknownHostException;

/**

 * 客户端1

 * @author Chengjq

 *

 */

public class SocketClient1 {

	@SuppressWarnings("static-access")

	public static void main(String[] args) {

		try {

			//初始化客户端

			Socket socket = new Socket("127.0.0.1", 4404);

			BufferedReader readline = new BufferedReader(new InputStreamReader(System.in));

			//获取输出打印流

			PrintWriter socketOut = new PrintWriter(socket.getOutputStream());

			String outTemp = null;

			System.out.println("开始准备向服务器端发起请求---\n自己:");

			// 已启动连接socket服务器，准备实时接收来自其他客户端的消息

			GetMess getMess = new GetMess(socket);

			getMess.start();

			// 通过控制台发送消息给其他客户端，以“bye”为结束语

			while ((outTemp = readline.readLine()) != null) {

				//发送信息

				socketOut.println(outTemp);

				socketOut.flush();

				if("bye".equals(outTemp)){

					break;

				}

			}

			getMess.currentThread().interrupt();

			//依次关闭各种流

			readline.close();

			socketOut.close();

			socket.close();

		} catch (UnknownHostException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		} catch (IOException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		}

	}

}

　　客户端2

package com.orange;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.PrintWriter;

import java.net.Socket;

import java.net.UnknownHostException;

public class SocketClient2 {

    @SuppressWarnings("static-access")

    public static void main(String[] args) {

        try {

            //初始化客户端

            Socket socket = new Socket("127.0.0.1", 4404);

            BufferedReader readline = new BufferedReader(new InputStreamReader(System.in));

            //获取输出打印流

            PrintWriter socketOut = new PrintWriter(socket.getOutputStream());

            String outTemp = null;

            System.out.println("开始准备向服务器端发起请求---\n自己:");

            // 已启动连接socket服务器，准备实时接收来自其他客户端的消息

            GetMess getMess = new GetMess(socket);

            getMess.start();

            // 通过控制台发送消息给其他客户端，以“bye”为结束语

            while ((outTemp = readline.readLine()) != null) {

                //发送信息

                socketOut.println(outTemp);

                socketOut.flush();

                if("bye".equals(outTemp)){

                    break;

                }

            }

            getMess.currentThread().interrupt();

            //依次关闭各种流

            readline.close();

            socketOut.close();

            socket.close();

        } catch (UnknownHostException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

    }

}

GetMess（多线程处理获取其他客户端的消息并且展示）

package com.orange;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.net.Socket;

public class GetMess extends Thread {

    Socket socket = null;

    public GetMess(Socket socket) {

        super();

        this.socket = socket;

    }

    @Override

    public void run() {

        // TODO Auto-generated method stub

        BufferedReader socketIn = null;

        try {

            InputStream is = socket.getInputStream();

            InputStreamReader isr = new InputStreamReader(is);

            socketIn = new BufferedReader(isr);

            String inTemp = null;

            while(true){

                inTemp = socketIn.readLine();

                if(inTemp != null && !"bye".equals(inTemp) ){

                    System.out.println("好友:\n"+inTemp);

                }else{

                    System.out.println("好友:\n已下线，关闭当前回话");

                    break;

                }

            }

        } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }finally {

            try {

                Thread.currentThread().interrupt();

                socketIn.close();

            } catch (IOException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            }

        }

    }

}

ok，简单的sockte服务与客户端完成了

先启动server

在分别启动client

输入结束bye,关闭当前会话