Java实现socket服务端长连接

Java实现socket服务端长连接

import java.io.*;
import java.net.Socket;

public class ServerThread extends Thread{

    private Socket socket = null;

    public ServerThread(Socket socket) {
        this.socket = socket;
    }

    @Override
    public void run() {
        InputStream is=null;
        InputStreamReader isr=null;
        BufferedReader br=null;
        OutputStream os=null;
        PrintWriter pw=null;
        try {
            is = socket.getInputStream();
            isr = new InputStreamReader(is);
            br = new BufferedReader(isr);

            String info = null;

            while((info=br.readLine())!=null){
                System.out.println("我是服务器，客户端说："+info);
            }
            socket.shutdownInput();

            os = socket.getOutputStream();
            pw = new PrintWriter(os);
            pw.write("服务器欢迎你");

            pw.flush();
        } catch (Exception e) {
            // TODO: handle exception
        } finally{
            // 关闭资源
            SocketUtil.close(br, pw, is, os, socket);
        }
    }

import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;

public class SocketServer {

    public static void main(String[] args) {
        SocketServer socketServer = new SocketServer();
        socketServer.socket();
    }

    public void socket() {
        try {
            // 创建服务端socket
            ServerSocket serverSocket = new ServerSocket(9118);
            System.out.println("socket服务端启动......");
            // 创建客户端socket
            Socket socket = new Socket();

            //循环监听等待客户端的连接
            while(true){
                // 监听客户端
                socket = serverSocket.accept();

                ServerThread thread = new ServerThread(socket);
                thread.start();

                InetAddress address=socket.getInetAddress();
                System.out.println("当前客户端的IP："+address.getHostAddress());
            }
        } catch (Exception e) {
            // TODO: handle exception
            e.printStackTrace();
        }
    }
}

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.*;
import java.net.Socket;

public class SocketUtil {

    public final static Logger logger = LoggerFactory.getLogger(SocketUtil.class);

    /**
     * 关闭资源
     * @param br
     * @param pw
     * @param is
     * @param os
     * @param socket
     */
    public static void close(BufferedReader br, PrintWriter pw, InputStream is, OutputStream os, Socket socket) {
        try {
            if (null != br) {
                br.close();
            }
            if (null != pw) {
                pw.close();
            }
            if (null != is) {
                is.close();
            }
            if (null != os) {
                os.close();
            }
            if (null != socket) {
                socket.close();
            }
        } catch (IOException e) {
            logger.error("IOException", e);
        }
    }
}