Java callback mechanism

In the public number development process, the use of callback mode, when sending a template message to the user each time to wait a long time, which is unreasonable, so think of using callback mode to properly shorten the waiting time. Directly on the code:

Creates a callback interface for the callback pattern, which is called when the server executes to return a value.

1 /**2 * Callback Interface3  * @authorXiao Quan4 * @create December 9, 2015 morning 11:54:485 * @varsion 1.06  */7  Public InterfaceMsgcallback {8      Public voidhandler (String status);9}

Send server-side (contains only calls to send message methods):

1 /**2 * Simulation Server3  * @authorXiao Quan4 * @create December 9, 2015 morning 11:57:105 * @varsion 1.06  */7  Public classSendserver {8     9      Public voidgetclientmsg (msgcallback callback,weixinmsg msg) {TenSYSTEM.OUT.PRINTLN ("Server": the server received a message to be sent as "+msg.getmsg ()); OneString status = "200"; A         //The time-consuming process of simulating a server request server -         Try{ -Thread.Sleep (5*1000); the //String result = Httputil.post (wxurl,data); -             if(Msg.getto (). Contains ("1")) {//test: Send failed if 1 is included -Status = "201"; -             } +}Catch(interruptedexception e) { - e.printstacktrace (); +         } AString result = "Server Side": Sent to "+msg.getto () +" message ("+msg.getmsg () +") "; at         if("$". Equals (status)) {//Default Success -System.out.println (result+ "Send successfully, return success status 200"); -}Else{ -System.out.println (result+ "Send failed, return failed status 201"); -         } - Callback.handler (status); //callback method  in     } -}

Impersonation Call class:

1 /**2 * Analog Send client, implement callback interface3  * @authorXiao Quan4 * @create December 9, 2015 morning 11:58:225 * @varsion 1.06  */7  Public classSendclientImplementsMsgcallback {8     Privatesendserver server;9      Publicsendclient (sendserver server) {Ten          This. Server =server; One     } A      Public voidSendmsg (Finalweixinmsg msg) {// Send Message Method -System.out.println ("operator": the message to be sent is "+msg.getmsg ()); -         NewThread (NewRunnable () { the @Override -              Public voidrun () { -Server.getclientmsg (sendclient. This, msg); -             } + }). Start (); -System.out.println ("operator": \ "" "+msg.getfrom () +" \ "Send to \" "+msg.getto () +" \ "Message (" +msg.getmsg () + ") has entered the Send queue! "); +     } A @Override at      Public voidhandler (String status) { -System.out.println ("operator": Server send return status "+status); -     } -}

Give a test class:

1 /**2  * @authorXiao Quan3 * @create December 9, 2015 PM 12:08:304 * @varsion 1.05  */6  Public classTestcallback {7      Public Static voidMain (string[] args) {8Sendserver Server =Newsendserver ();9Sendclient client =Newsendclient (server);Ten weixinmsg msg; One          for(inti=0;i<5;i++){ Amsg =Newweixinmsg (); -Msg.setfrom ("Sender"); -Msg.setmsg ("Thank you for your valuable advice"); theMsg.setto (i+ ""); - client.sendmsg (msg); -         } -     } +}

Test results:

1 "operator": Message to be sent thank you for your valuable advice2"operator": "Sender" sent to "0"message (Thank you for your valuable advice) has entered the Send queue! 3 "operator": Message to be sent thank you for your valuable advice4"operator": "Sender" Sent to "1"message (Thank you for your valuable advice) has entered the Send queue! 5 "operator": Message to be sent thank you for your valuable advice6 "Server": the server receives the message to be sent thank you for your valuable advice7"operator": "Sender" Sent to "2"message (Thank you for your valuable advice) has entered the Send queue! 8 "operator": Message to be sent thank you for your valuable advice9"operator": "Sender" Sent to "3"message (Thank you for your valuable advice) has entered the Send queue! Ten "Server": the server receives the message to be sent thank you for your valuable advice One "operator": Message to be sent thank you for your valuable advice A"operator": "Sender" Sent to "4"message (Thank you for your valuable advice) has entered the Send queue!  - "Server": the server receives the message to be sent thank you for your valuable advice - "Server": the server receives the message to be sent thank you for your valuable advice the "Server": the server receives the message to be sent thank you for your valuable advice -"Server Side": Send to 0 message (thank you for your valuable suggestions) sent successfully, return to success status 200 -"Operator": the server sends a return status of 200 -"Server Side": Send to 2 message (thank you for your valuable suggestions) sent successfully, return to success status 200 +"Operator": the server sends a return status of 200 -"Server Side": Send to 3 message (thank you for your valuable suggestions) sent successfully, return to success status 200 +"Operator": the server sends a return status of 200 A"Server Side": Send to 1 message (Thank you for your valuable suggestions) sent failed, return failure status 201 at"Operator": the server sends a return status of 201 -"Server Side": Send to 4 message (thank you for your valuable suggestions) sent successfully, return to success status 200 -"Operator": the server sends a return status of 200

The above is a simple implementation of the callback process, interested in child shoes can be in-depth study under

Thanks for maths~

Java callback mechanism