UDP，TCP与TCP多线程的传输接收

UDP传输

public class UDPSend {
	public static void main(String[] args) throws IOException {
		InetAddress ina=InetAddress.getLocalHost();
		byte[] bytes="你好吗".getBytes();
		DatagramSocket ds=new DatagramSocket();
		DatagramPacket dp=new DatagramPacket(bytes, bytes.length,ina, 9528);
		ds.send(dp);
		ds.close();
		
	}
	
}

 UDP的接收

public class UDPRecieve {
    public static void main(String[] args) throws IOException {
        DatagramSocket ds=new DatagramSocket(9528);
        byte[] buf=new byte[1024];
        int len=buf.length;
        DatagramPacket dp=new DatagramPacket(buf, len);
        ds.receive(dp);
        System.out.println(new String(buf,0,len));
        ds.close();
    }
}

TCP的客户端

public class TCPClient {
	public static void main(String[] args) throws IOException, IOException {
		Socket socket=new Socket("192.168.1.123",3001);
		OutputStream os=socket.getOutputStream();
		FileInputStream fis=new FileInputStream("C:\Users\Rui\Desktop\read\天际势力图.jpg");
		int len=0;
		byte[] bytes=new byte[1024];
		while((len=fis.read(bytes))!=-1){
			os.write(bytes);
		}
		socket.shutdownOutput();
		InputStream in=socket.getInputStream();
		len=in.read(bytes);
		System.out.println(new String(bytes,0,len));
		fis.close();
		socket.close();
	}
}

 TCP的服务器端

public class TCPServer {
    public static void main(String[] args) throws IOException {
        ServerSocket server =new ServerSocket(7757);
        Socket socket=server.accept();
        InputStream in=socket.getInputStream();
        int len=0;
        byte[]bytes=new byte[1024];
        File f=new File("C:\Users\Rui\Desktop\write\write\tnt.jpg");
        FileOutputStream out=new FileOutputStream(f);
        while((len=in.read(bytes))!=-1){
            out.write(bytes, 0, len);
        }
        OutputStream os=socket.getOutputStream();
        os.write("传入成功".getBytes());
        out.close();
        socket.close();
        server.close();
    }
}

TCP多线程接收信息的Runnable实现类

public class UPload implements Runnable {
	private Socket socket;
	private FileOutputStream out;
	UPload(Socket socket){
		this.socket=socket;
	}
		
		public void run() {
			InputStream in;
			try {
				in = socket.getInputStream();
				int len=0;
				byte[]bytes=new byte[1024];
				File f=new File("C:\Users\Rui\Desktop\write\write\tnt.jpg");
				FileOutputStream out=new FileOutputStream(f);
				while((len=in.read(bytes))!=-1){
					out.write(bytes, 0, len);
				}
				OutputStream os=socket.getOutputStream();
				os.write("传入成功".getBytes());
				
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();

			
			}
	}
}