Message Queuing RABBITMQ integration with spring

1.RabbitMQ Introduction

RABBITMQ is a popular open source Message Queuing system, developed in Erlang language. RABBITMQ is the standard implementation of the AMQP (Advanced Message Queuing protocol).
Official website: http://www.rabbitmq.com/

2.Spring Integrated RabbitMQ2.1 maven Configuration

// pom.xml<dependency>      <groupId>com.rabbitmq</groupId>      <artifactId> amqp-client</artifactid>      <version>3.5.1</version>    </dependency>    < dependency>        <groupId>org.springframework.amqp</groupId>        <artifactid>spring-rabbit </artifactId>        <version>1.4.5.RELEASE</version>    </dependency>

2.2 RABBMITMQ configuration file

// rabbitmq-config.propertiesmq.host=127.0.0.1mq.username=Testmq.password=123456  Mq.port=5672mq.vhost=TESTMQ

2.3 Spring Configuration

//Application-mq.xml<beans xmlns= "Http://www.springframework.org/schema/beans"Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"Xmlns:rabbit= "Http://www.springframework.org/schema/rabbit"xsi:schemalocation= "Http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsdhttp//Www.springframework.org/schema/rabbithttp//www.springframework.org/schema/rabbit/spring-rabbit-1.0.xsd ">&LT;DESCRIPTION&GT;RABBITMQ Connection Service Configuration </description> <!--connection configuration-<rabbit:connection-factory id= "Connect Ionfactory "host=" ${mq.host} "Username=" ${mq.username} "password=" ${mq.password} "port=" ${mq.port} "virtual-host=" $ {mq.vhost} "/> <rabbit:admin connection-factory=" ConnectionFactory "/> <!--spring Template declaration--&lt  ; rabbit:template exchange= "Amqpexchange" id= "Amqptemplate" connection-factory= "ConnectionFactory" message-converter= "Jsonmessageconverter"/> <!--Message Object JSON conversion class--<bean id= "Jsonmessageconverter"class= "Org.springframework.amqp.support.converter.Jackson2JsonMessageConverter"/> </beans>

3. Use RabbitMQ3.1 in spring to declare a Message Queuing queue

// application-mq.xml<rabbit:queue id= "Test_queue_key" name= "Test_queue_key" durable= "true" auto-delete= " False "exclusive=" false "/>

Description
Durable: whether to persist
Exclusive: Only private queues that the creator can use, automatically deleted after disconnection
Auto_delete: Automatically delete queues when all consumer client connections are disconnected

3.2 Switch Definition

// application-mq.xml<rabbit:direct-exchange name= "Test-mq-exchange" durable= "true" auto-delete= "false" Id= "Test-mq-exchange" >    <rabbit:bindings>        <rabbit:binding queue= "Test_queue_key" key= "Test_ Queue_key "/>    </rabbit:bindings></rabbit:direct-exchange>

Description
Rabbit:direct-exchange: Defines the Exchange Mode as direct, meaning that the message is not forwarded until it exactly matches a specific routing key .
Rabbit:binding: Set Message queue matching key

3.3 Sending a message producer

// Mqproducer.java  Public Interface mqproducer {    /**     * Sends a message to the     specified queue @param  queuekey      @param Object      */     Public void Senddatatoqueue (String Queuekey, Object object);}

@Service Public classMqproducerimplImplementsMqproducer {@AutowiredPrivateamqptemplate amqptemplate; Private Final StaticLogger Logger = Logger.getlogger (Mqproducerimpl.class); /*(non-javadoc) * @see com.stnts.tita.rm.api.mq.mqproducer#senddatatoqueue (java.lang.String, Java.lang.Object) */@Override Public voidSenddatatoqueue (String Queuekey, Object object) {Try{amqptemplate.convertandsend (Queuekey, object); } Catch(Exception e) {logger.error (e); }    }}

Description
Convertandsend: Converting a Java object to a message sent to a switch that matches key exchange, where JSON conversion is configured, this is the form of converting a Java object into a JSON string.

Original: Convert a Java object to an AMQP Message and send it to a default exchange with a specific routing key.

3.4 Receiving Messages asynchronously consumer

Defining listeners

// Queuelistenter.java @Component  Public class Implements MessageListener {    @Override    publicvoid  onMessage (Message msg) {         try{            System.out.print (msg.tostring ());        } Catch (Exception e) {            e.printstacktrace ();     }}}

Monitoring Configuration

// application-mq.xml<rabbit:listener-container connection-factory= "ConnectionFactory" acknowledge= " Auto ">    <rabbit:listener queues=" Test_queue_key "ref=" Queuelistenter "/></rabbit: Listener-container>

Description
Queues: Listener queue, multiple words separated by commas (,)
Ref: Listener

3.5 JUnit Test

//Testqueue.java@RunWith (value = Springjunit4classrunner.class) @ContextConfiguration (Locations= {    "Classpath:/applicationcontext/applicationcontext-mq.xml"}) Public classtestqueue{@Autowired mqproducer mqproducer; FinalString Queue_key = "Test_queue_key"; @Test Public voidSend () {Map<String,Object> msg =NewHashMap () <>; Msg.put ("Data", "hello,rabbmitmq!");    Mqproducer.senddatatoqueue (QUERY_KEY,MSG); }}

Running the test program, run with JUnit, sends a message to Test_queue, which, after the listener hears the message, prints the message.

At this point, the spring and RABBMITMQ integration, configuration, and use have been completed.

Message Queuing RABBITMQ integration with spring