基于TCP协议的Socket通信 实现用户登录 以及服务端的相应

服务端

package com.example;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.io.PrintWriter;import java.net.ServerSocket;import java.net.Socket;/** * Created by ChenHe on 2016/10/28. * 基于TCP协议的Socket通信，实现用户登录 * 服务端 */public class Server {    public static void main(String[] args){        try {            //1.创建一个服务端Socket，即ServerSocket,指定绑定的端口，并且监听端口            ServerSocket serverSocket = new ServerSocket(8888);            //2.调用accept（）方法开始监听，等待客户端的连接            System.out.println("***i am server let us begin***");            Socket socket = serverSocket.accept();            //3.获取输入流，并读取客户端信息            InputStream is = socket.getInputStream();//字节输入流            InputStreamReader isr = new InputStreamReader(is);//将字节流转换为字符流            BufferedReader br = new BufferedReader(isr);//为字符流添加缓冲            String info = null;            while ((info = br.readLine())!=null){//循环读取客户端的信息                System.out.println("The client say："+info);            }            socket.shutdownInput();//关闭输入流            //4.获取输出流，相应客户端的请求            OutputStream os = socket.getOutputStream();            PrintWriter pw = new PrintWriter(os);//包装为打印流            pw.write("Welcome !!!");            pw.flush();//调用flush（）方法将缓冲输出            //5.关闭资源            pw.close();            os.close();            br.close();            isr.close();            is.close();            socket.close();            serverSocket.close();        } catch (IOException e) {            e.printStackTrace();        }    }}

服务器打印数据

***i am server let us begin***
The client say锛�UserName: admin;PassWorld锛�123


Process finished with exit code 0

客户端

package com.example;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.io.PrintWriter;import java.net.Socket;/** * Created by ChenHe on 2016/10/28 * 客户端. */public class Client {    public static void main(String[] args){        try {            //1.创建客户端Socket，指定服务区地址和端口            Socket socket = new Socket("localhost",8888);            //2.获取输出流，向服务端发送信息            OutputStream os = socket.getOutputStream();//字节输出流            PrintWriter pw = new PrintWriter(os);//将输出流包装为打印流            pw.write("UserName: admin;PassWorld：123");            pw.flush();//刷新            socket.shutdownOutput();//关闭输出流            //3.获取输入流，并读取服务端的相应信息            InputStream is = socket.getInputStream();            BufferedReader br = new BufferedReader(new InputStreamReader(is));            String info = null;            while ((info = br.readLine())!=null){                System.out.println("i am client,server say:"+info);            }            //4.关闭资源            br.close();            is.close();            pw.close();            os.close();            socket.close();        } catch (IOException e) {            e.printStackTrace();        }    }}

客户端打印数据

i am client,server say:Welcome !!!

实现多线程访问 

package com.example;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.io.PrintWriter;import java.net.Socket;/** * Created by ChenHe on 2016/10/28. * 服务器线程处理类 */public class ServerThread extends Thread {    Socket socket = null;    public ServerThread(Socket socket){        this.socket = socket;    }    //线程执行的操作，相应客户端的请求    public void run(){        InputStream is = null;//字节输入流        InputStreamReader isr = null;//将字节流转换为字符流        BufferedReader br = null;//为字符流添加缓冲         PrintWriter pw = null;          OutputStream os = null;        try {            //3.获取输入流，并读取客户端信息            is = socket.getInputStream();            isr = new InputStreamReader(is);            br = new BufferedReader(isr);            String info = null;            while ((info = br.readLine())!=null){//循环读取客户端的信息                System.out.println("The client say:"+info);            }        socket.shutdownInput();//关闭输入流        //4.获取输出流，相应客户端的请求            os = socket.getOutputStream();            pw = new PrintWriter(os);        pw.write("Welcome !!!");        pw.flush();//调用flush（）方法将缓冲输出    } catch (IOException e) {        e.printStackTrace();    }finally {            //5.关闭资源            try {                pw.close();                os.close();                br.close();                isr.close();                is.close();                socket.close();            } catch (IOException e) {                e.printStackTrace();            }        }    }}

服务端调用方法 

//循环监听客户端的连接while (true) {    //调用accept（）方法开始监听，等待客户端的连接    socket = serverSocket.accept();    //创建一个新的线程    ServerThread serverThread = new ServerThread(socket);    //启动线程    serverThread.start();    count++;    System.out.println("connect count:"+count);    InetAddress address = socket.getInetAddress();    System.out.println("ip:"+address);}