ActiveMQ, Stomp, SOCKJS entry-level applications

Live online chat with Activemq, Stomp, SOCKJS

ActiveMQ: Powerful open source instant Messaging and Integrated mode servers. In this project, act as the message Proxy Server, STOMP Protocol service side.

Install: Download on official website, unzip directly, run CMD, go to Bin directory to execute Activemq.bat start;linux./activemq start.

　　Stomp:stomp is a text-directed communication protocol. This project uses the Stomp protocol based JavaScript client library Stomp.js

Install: Download stomp.js, introduce in project

SOCKJS:Sockjs is WebSocket's JavaScript library, is the implementation of WebSocket　　

Install: Download sockjs.js, introduce in project

The first step: Create a Javaweb project, configure MAVEN dependencies, and rely on the following

1 <Properties>2         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>3         <spring.version>4.2.4.RELEASE</spring.version>4     </Properties>5 6     <Dependencies>7         <Dependency>8             <groupId>Org.springframework</groupId>9             <Artifactid>Spring-webmvc</Artifactid>Ten             <version>${spring.version}</version> One         </Dependency> A  -         <Dependency> -             <groupId>Org.springframework</groupId> the             <Artifactid>Spring-websocket</Artifactid> -             <version>${spring.version}</version> -         </Dependency> -  +         <Dependency> -             <groupId>Org.springframework</groupId> +             <Artifactid>Spring-messaging</Artifactid> A             <version>${spring.version}</version> at         </Dependency> -  -         <Dependency> -             <groupId>Io.projectreactor</groupId> -             <Artifactid>Reactor-net</Artifactid> -             <version>2.0.7.RELEASE</version> in         </Dependency> -  to         <Dependency> +             <groupId>Io.netty</groupId> -             <Artifactid>Netty-all</Artifactid> the             <version>4.0.33.Final</version> *         </Dependency> $ Panax Notoginseng  -         <Dependency> the             <groupId>Com.fasterxml.jackson.core</groupId> +             <Artifactid>Jackson-databind</Artifactid> A             <version>2.6.4</version> the         </Dependency> +  -         <Dependency> $             <groupId>Javax.servlet</groupId> $             <Artifactid>Javax.servlet-api</Artifactid> -             <version>3.1.0</version> -             <Scope>Provided</Scope> the         </Dependency> - Wuyi  the     </Dependencies>

Step Two: Configure the message terminal to include the following configuration in the Springmvc configuration file

　　

<Websocket:message-brokerApplication-destination-prefix= "/app">        <Websocket:stomp-endpointPath= "/stomp">            <Websocket:sockjs/>        </Websocket:stomp-endpoint>        <Websocket:stomp-broker-relayprefix= "/topic,/queue"Relay-host= "localhost"Relay-port= "61613"Heartbeat-receive-interval= "20000"Heartbeat-send-interval= "20000"        />    </Websocket:message-broker>

Step three: Write Message processing code

　　

 PackageCom.its.controller;Importorg.springframework.beans.factory.annotation.Autowired;Importorg.springframework.messaging.handler.annotation.MessageMapping;Importorg.springframework.messaging.simp.SimpMessagingTemplate;ImportOrg.springframework.stereotype.Controller; @Controller Public classMessagecontroller {@AutowiredPrivatesimpmessagingtemplate template; @MessageMapping ("Channel")     Publicstring Send (String message) {string text=message; Template.convertandsend ("/topic/pinkzhuang", text); returntext; }}

Fourth step: Write the page message transceiver logic, the page to introduce Stomp.js and sockjs.js

functionConnect () {varSocket =NewSOCKJS ("Http://localhost:8080/ActivityMQStomp/stomp"); Stompclient=stomp.over (socket); Stompclient.connect ({},function(frame) {setconnected (true); Console.log ("Connected:" +frame); Stompclient.subscribe ("/topic/pinkzhuang",function(greeting) {showgreeting (greeting.body);            });        }); }functionDisconnect () {stompclient.disconnect ();}functionsendMessage (message) {Stompclient.send ("/app/vince", {},name);}

Fifth step: Can login localhost:8161 to enter ACTIVEMQ Management page, the initial account password is admin, you can manually send messages on the Administration page

　　

The End.

　　　　

ActiveMQ, Stomp, SOCKJS entry-level applications