Redis publish and subscribe

Start the subscription and publish Client

On the subscription Client

Redis 127.0.0.1: 6379> PSUBSCRIBE share

Reading messages... (press Ctrl-C to quit)
1) "psubscribe"
2) "share"

3) (integer) 1

Indicates that the client subscribes to the share channel

1 indicates that the number of connected subscription channels in the client is 1.

On the publish client, publish a message for this channel

Redis 127.0.0.1: 6379> publish share "share"
(Integer) 1

1 indicates that one connection receives the message.

Subscription client display:

1) "pmessage" // Message Type
2) "share" // The Name Of The channel I subscribed
3) "share" // The Name Of The channel I receive
4) "share" // message content

Ps: The java Implementation subscription code is attached:

1. Public Static VoidMain (String [] args ){
2. String cmd ="Subscribe share \ r \ n";
3. SocketChannel client =Null;
4. Try{
5. SocketAddress address =NewInetSocketAddress ("Localhost",6379);
6. Client = SocketChannel. open (address );
7. Client. configureBlocking (False);// Set to asynchronous
8. ByteBuffer buffer = ByteBuffer. allocate (100);
9. Buffer. put (cmd. getBytes ());
10. Buffer. clear ();
11. Client. write (buffer );
12. System. out. println ("Send data :"+NewString (buffer. array ()));
14. While(True){
15. Buffer. flip ();
16. IntI = client. read (buffer );
17. If(I>0){
18. Byte[] B = buffer. array ();
19. System. out. println ("Receive data :"+NewString (B ));
20. Break;
21. }
22. }
23. }Catch(Exception e ){
24. Try{
25. Client. close ();
26. }Catch(IOException e1 ){
27. E1.printStackTrace ();
28. }
29. E. printStackTrace ();
30. }
31. }