Sokect简单入门（1）TCP协议一

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;

/**
 * 服务器端
 * */
public class LoginServer {
    public static void main(String[] args) {
        try {
            //1.建立一个服务器Socket（ServerSocket）绑定指定端口并开始监听
            ServerSocket serverSocket=new ServerSocket(8800);
            //2.使用accept()方法阻塞等待监听，获得新的连接
            System.out.println("等待连接");
            Socket socket=serverSocket.accept();
            System.out.println("已接收到连接，开始处理请求.....");
            //3.获得输入流
            InputStream is=socket.getInputStream();
            BufferedReader br=new BufferedReader(new InputStreamReader(is));
            //获得输出流
            OutputStream os=socket.getOutputStream();
            PrintWriter pw=new PrintWriter(os);
            //4.读取用户输入信息
            String info=null;
            while(!((info=br.readLine())==null)){
                System.out.println("我是服务器，用户信息为："+info);
            }
            //给客户一个响应
            String reply="welcome!";
            pw.write(reply);
            pw.flush();
            //5.关闭资源
            pw.close();
            os.close();
            br.close();
            is.close();
            socket.close();
            serverSocket.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        
    }
}

 1 import java.io.BufferedReader;
 2 import java.io.IOException;
 3 import java.io.InputStream;
 4 import java.io.InputStreamReader;
 5 import java.io.OutputStream;
 6 import java.io.PrintWriter;
 7 import java.net.Socket;
 8 import java.net.UnknownHostException;
 9 
10 /**
11  * 客户端
12  * */
13 public class LoginClient {
14     public static void main(String[] args) {
15         try {
16             //1.建立客户端Socket连接，指定服务器的位置以及端口
17             Socket socket=new Socket("localhost",8800);
18             //2.得到Socket的读写流
19             OutputStream os=socket.getOutputStream();
20             PrintWriter pw=new PrintWriter(os);
21             //输入流
22             InputStream is=socket.getInputStream();
23             BufferedReader br=new BufferedReader(new InputStreamReader(is));
24             //3.利用流按照一定的协议对Socket进行读/写操作
25             String info="用户名：Tom;用户密码：123456";
26             pw.write(info);
27             pw.flush();
28             socket.shutdownOutput();
29             //接受服务器的响应并打印显示
30             String reply=null;
31             while(!((reply=br.readLine())==null)){
32                 System.out.println("我是客户端，服务器的响应为："+reply);
33             }
34             //4.关闭资源
35             br.close();
36             is.close();
37             pw.close();
38             os.close();
39             socket.close();
40         } catch (UnknownHostException e) {
41             // TODO Auto-generated catch block
42             e.printStackTrace();
43         } catch (IOException e) {
44             // TODO Auto-generated catch block
45             e.printStackTrace();
46         }
47         
48     }
49 }