JAVA SOCKET接口 （代码）

Posted 2020-11-24 remindme

 基于TCP的socket实现

SocketClient.java

public class SocketClient {
    
    public static void main(String[] args) throws InterruptedException {
        try {
            // 和服务器创建连接
            Socket socket = new Socket("localhost",8088);
            
            // 要发送给服务器的信息
            OutputStream os = socket.getOutputStream();
            PrintWriter pw = new PrintWriter(os);
            pw.write("客户端发送信息");
            pw.flush();
            
            socket.shutdownOutput();
            
            // 从服务器接收的信息
            InputStream is = socket.getInputStream();
            BufferedReader br = new BufferedReader(new InputStreamReader(is));
            String info = null;
            while((info = br.readLine())!=null){
                System.out.println("我是客户端，服务器返回信息："+info);
            }
            
            br.close();
            is.close();
            os.close();
            pw.close();
            socket.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
 
}

原文链接：https://blog.csdn.net/u014209205/article/details/80461122

SocketServer.java

public class SocketServer {
    
    public static void main(String[] args) {
        try {
            // 创建服务端socket
            ServerSocket serverSocket = new ServerSocket(8088);
            
            // 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();
        }
    }
 }


原文链接：https://blog.csdn.net/u014209205/article/details/80461122

ServerThread.java

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
            try {
                if(pw!=null)
                    pw.close();
                if(os!=null)
                    os.close();
                if(br!=null)
                    br.close();
                if(isr!=null)
                    isr.close();
                if(is!=null)
                    is.close();
                if(socket!=null)
                    socket.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}
————————————————
原文链接：https://blog.csdn.net/u014209205/article/details/80461122

 基于UDP的socket实现

SocketClient.java

public class SocketClient {
	
	public static void main(String[] args) {
		try {
            // 要发送的消息
            String sendMsg = "客户端发送的消息";
            
            // 获取服务器的地址
            InetAddress addr = InetAddress.getByName("localhost");
            
            // 创建packet包对象，封装要发送的包数据和服务器地址和端口号
            DatagramPacket packet = new DatagramPacket(sendMsg.getBytes(),
            		sendMsg.getBytes().length, addr, 8088); 
            
            // 创建Socket对象
            DatagramSocket socket = new DatagramSocket();
            
            // 发送消息到服务器
            socket.send(packet);
 
            // 关闭socket
            socket.close();
            
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
	}
}
————————————————
原文链接：https://blog.csdn.net/u014209205/article/details/80461122

　　

SocketServer.java

 1 public class SocketServer {
 2     
 3     public static void main(String[] args) {
 4         try {
 5              // 要接收的报文
 6             byte[] bytes = new byte[1024];
 7             DatagramPacket packet = new DatagramPacket(bytes, bytes.length);
 8             
 9             // 创建socket并指定端口
10             DatagramSocket socket = new DatagramSocket(8088);
11             
12             // 接收socket客户端发送的数据。如果未收到会一致阻塞
13             socket.receive(packet);
14             String receiveMsg = new String(packet.getData(),0,packet.getLength());
15             System.out.println(packet.getLength());
16             System.out.println(receiveMsg);
17             
18             // 关闭socket
19             socket.close();
20         } catch (Exception e) {
21             // TODO: handle exception
22             e.printStackTrace();
23         }
24     }
25  
26 }
27 ————————————————
28 原文链接：https://blog.csdn.net/u014209205/article/details/80461122