于TCP协议的socket通信

 1 package com.socket;
 2 
 3 import java.io.BufferedReader;
 4 import java.io.InputStream;
 5 import java.io.InputStreamReader;
 6 import java.io.OutputStream;
 7 import java.io.PrintWriter;
 8 import java.net.Socket;
 9 
10 public class Client {
11 
12     /**
13      * 基于TCP协议的socket通信
14      * 客户端
15      * @return
16      */
17     public static void main(String[] args) {
18         
19         try {
20             //指定服务地址和端口号
21             Socket socket=new Socket("localhost", 8888);
22             //2.获取输出流，向服务器端发送信息     字节流
23             OutputStream op = socket.getOutputStream();
24             //将输出流包装为打印流
25             PrintWriter ps = new PrintWriter(op);
26             ps.write("用户名 client 密码 123 ");
27             ps.flush();
28             //关闭输出流
29             socket.shutdownOutput();
30             
31             //从服务器获取输入流
32             InputStream is = socket.getInputStream();
33             BufferedReader bf = new BufferedReader(new InputStreamReader(is));
34             String info = null;
35             
36             while((info=bf.readLine())!=null){
37                 System.out.println("服务器说"+info);
38             }
39             
40             //关闭资源
41             socket.close();
42         } catch (Exception e) {
43             // TODO Auto-generated catch block
44             e.printStackTrace();
45         }
46     }
47 
48 }

 1 package com.socket;
 2 
 3 
 4 import java.io.IOException;
 5 import java.net.InetAddress;
 6 import java.net.ServerSocket;
 7 import java.net.Socket;
 8 
 9 public class Server {
10 
11     /**
12      * 基于TCP协议的Socket编程
13      *     服务器端
14      * @return
15      */
16     public static void main(String[] args) {
17         
18         int count = 0;
19         try {
20             //1.创建一个服务器端Socket，即ServerSocket，指定绑定的端口，并监听此端口
21             ServerSocket serverSocket = new ServerSocket(8888);
22             //循环监听客户端连接
23             while(true){
24                 // 调用accept()方法开始监听，等待客户端的连接
25                 Socket     socket=serverSocket.accept();
26                 SocketThread st = new SocketThread(socket);
27                 
28                 st.start();
29                 count++;
30                 System.out.println("当前客户数量: "+count);
31                 
32                 InetAddress address=socket.getInetAddress();
33                 
34                 System.out.println("当前客户端ip"+address);
35             }
36             
37             
38         } catch (IOException e) {
39             
40             e.printStackTrace();
41         }
42         
43         
44     }
45 
46 }

 1 package com.socket;
 2 
 3 import java.io.BufferedReader;
 4 import java.io.IOException;
 5 import java.io.InputStream;
 6 import java.io.InputStreamReader;
 7 import java.io.OutputStream;
 8 import java.io.PrintWriter;
 9 import java.net.Socket;
10 
11 public class SocketThread extends Thread {
12 
13     /**
14      * 循环接收客户端线程
15      * 
16      * @return
17      */
18     // 和本线程相关的Socket
19     Socket socket = null;
20     public SocketThread(Socket socket) {
21         this.socket = socket;
22     }
23 
24     @Override
25     public void run() {
26 
27         InputStream is = null;
28         OutputStream os = null;
29         BufferedReader bs = null;
30         PrintWriter pw = null;
31         try {
32             is = socket.getInputStream();
33 
34             bs = new BufferedReader(new InputStreamReader(is));
35             String info = null;
36             while ((info = bs.readLine()) != null) {
37 
38                 System.out.println("我是服务器    客户端 说 " + info);
39             }
40             socket.shutdownInput();
41 
42             // 相应客户端信息
43             os = socket.getOutputStream();
44             pw = new PrintWriter(os);
45             pw.print("你好，欢迎登陆");
46             pw.flush();
47         } catch (IOException e) {
48             // TODO Auto-generated catch block
49             e.printStackTrace();
50         } finally {
51 
52             try {
53                 if (os != null)
54                     os.close();
55                 if (is != null)
56                     is.close();
57                 if (bs != null)
58                     bs.close();
59                 if (pw != null)
60                     pw.close();
61                 if (socket != null)
62                     socket.close();
63             } catch (IOException e) {
64                 // TODO Auto-generated catch block
65                 e.printStackTrace();
66             }
67 
68         }
69     }
70 
71 }