rabbitMQ第五篇：Spring整合RabbitMQ，rabbitmq第五篇

rabbitMQ第五篇：Spring整合RabbitMQ，rabbitmq第五篇

   前面幾篇講解了如何使用rabbitMq，這一篇主要講解spring整合rabbitmq。

   首先引入設定檔org.springframework.amqp，如下

        <dependency>            <groupId>org.springframework.amqp</groupId>            <artifactId>spring-rabbit</artifactId>            <version>1.6.0.RELEASE</version>        </dependency>

一：配置消費者和產生者公用部分

<rabbit:connection-factory id="connectionFactory" host="${rabbit.hosts}"                               port="${rabbit.port}" username="${rabbit.username}" password="${rabbit.password}" virtual-host="${rabbit.virtualHost}"                               channel-cache-size="50"/>    <rabbit:admin connection-factory="connectionFactory"/>    <!--定義訊息佇列-->    <rabbit:queue name="spittle.alert.queue.1" durable="true" auto-delete="false"/>    <rabbit:queue name="spittle.alert.queue.2" durable="true" auto-delete="false"/>    <rabbit:queue name="spittle.alert.queue.3" durable="true" auto-delete="false"/>    <!--綁定隊列-->    <rabbit:fanout-exchange id="spittle.fanout" name="spittle.fanout" durable="true">        <rabbit:bindings>            <rabbit:binding queue="spittle.alert.queue.1"></rabbit:binding>            <rabbit:binding queue="spittle.alert.queue.2"></rabbit:binding>            <rabbit:binding queue="spittle.alert.queue.3"></rabbit:binding>        </rabbit:bindings>    </rabbit:fanout-exchange>

二：配置產生者

<import resource="amqp-share.xml"/>    <!--建立訊息佇列模板-->    <rabbit:template id="rabbitTemplate" connection-factory="connectionFactory"                     exchange="spittle.fanout" message-converter="jsonMessageConverter">    </rabbit:template>    <bean id="jsonMessageConverter" class="org.springframework.amqp.support.converter.JsonMessageConverter"></bean>

三：生產者程式

public class Spittle implements Serializable {    private Long id;    private Spitter spitter;    private String message;    private Date postedTime;    public Spittle(Long id, Spitter spitter, String message, Date postedTime) {        this.id = id;        this.spitter = spitter;        this.message = message;        this.postedTime = postedTime;    }    public Long getId() {        return this.id;    }    public String getMessage() {        return this.message;    }    public Date getPostedTime() {        return this.postedTime;    }    public Spitter getSpitter() {        return this.spitter;    }}

public class ProducerMain {    public static void main(String[] args) throws Exception {        ApplicationContext context = new ClassPathXmlApplicationContext("amqp/amqp-producer.xml");        AmqpTemplate template = (AmqpTemplate) context.getBean("rabbitTemplate");        for (int i = 0; i < 20; i++) {            System.out.println("Sending message #" + i);            Spittle spittle = new Spittle((long) i, null, "Hello world (" + i + ")", new Date());            template.convertAndSend(spittle);            Thread.sleep(5000);        }        System.out.println("Done!");    }}

其中convertAndSend方法預設第一個參數是交換器名稱，第二個參數是路由名稱，第三個才是我們發送的資料，現在我們啟動程式，效果如下

第四個：消費者程式

首先編寫一個用於監聽生產者發送資訊的代碼

/** * Created by Administrator on 2016/11/18. */public class SpittleAlertHandler implements MessageListener {    @Override    public void onMessage(Message message) {        try {            String body=new String(message.getBody(),"UTF-8");            System.out.println(body);        } catch (UnsupportedEncodingException e) {            e.printStackTrace();        }    }}

一定要注意實現MessageListener，我們只需要擷取message的body即可，通過json來轉換我們需要的程式（比如我們可以發送一個map，map存放方法和實體，這樣我們可以通過反射來調用不同的程式來運行）。

下面我們配置消費者

 

<import resource="amqp-share.xml"/>    <rabbit:listener-container connection-factory="connectionFactory">      <rabbit:listener ref="spittleListener" method="onMessage" queues="spittle.alert.queue.1,spittle.alert.queue.3,spittle.alert.queue.2"/>    </rabbit:listener-container>    <bean id="spittleListener" class="com.lp.summary.rabbitmq.impl.SpittleAlertHandler"/>

其中spittleListener是監聽的程式，method是執行的方法，queues是我們監聽的隊列，多個隊列可以逗號隔開（因為我們採用的是分發，所以三個隊列擷取的訊息是相同的，這裡為了簡便我放在一個監聽程式中了，其實我們可以寫三個消費者，每個消費者監聽一個隊列）

現在只需要啟動程式即可運行

public class ConsumerMain {    public static void main(String[] args) {        ApplicationContext context = new ClassPathXmlApplicationContext("amqp/amqp-consumer.xml");    }}

 當然direct跟上面的情況差不多，只不過這個是根據路由匹配，先把資料發送到交換器，然後綁定路由和隊列，通過交換器id和路由來找到隊列，下面是一些主要的配置

 <rabbit:queue id="spring-test-queue1" durable="true" auto-delete="false" exclusive="false" name="spring-test-queue1"></rabbit:queue>    <rabbit:queue name="spring-test-queue2" durable="true" auto-delete="false" exclusive="false"></rabbit:queue>    <!--交換器定義-->    <!--rabbit:direct-exchange：定義exchange模式為direct，        意思就是訊息與一個特定的路由鍵完全符合，才會轉寄。        rabbit:binding：設定訊息queue匹配的key-->    <rabbit:direct-exchange name="${rabbit.exchange.direct}" durable="true" auto-delete="false" id="${rabbit.exchange.direct}">        <rabbit:bindings>            <rabbit:binding queue="spring-test-queue1" key="spring.test.queueKey1"/>            <rabbit:binding queue="spring-test-queue2" key="spring.test.queueKey2"/>      </rabbit:bindings>    </rabbit:direct-exchange>    <!--spring template聲明-->    <rabbit:template exchange="${rabbit.exchange.direct}" id="rabbitTemplate" connection-factory="connectionFactory"    message-converter="jsonMessageConverter"></rabbit:template>    <!--訊息對象轉成成json-->    <bean id="jsonMessageConverter" class="org.springframework.amqp.support.converter.JsonMessageConverter"></bean>

下面是消費者監聽配置

 <rabbit:listener-container connection-factory="connectionFactory" acknowledge="auto">        <rabbit:listener queues="spring-test-queue1" method="onMessage" ref="queueListenter"></rabbit:listener>    </rabbit:listener-container>    <rabbit:listener-container connection-factory="connectionFactory" acknowledge="auto">        <rabbit:listener queues="spring-test-queue2" method="onMessage" ref="queueListenter"></rabbit:listener>    </rabbit:listener-container>

下面是程式

 public static void main(String[] args) {        ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext-rabbitmq-producer.xml");        MQProducer mqProducer=(MQProducer) context.getBean("mqProducer");        mqProducer.sendDateToQueue("spring.test.queueKey1","Hello World spring.test.queueKey1");        mqProducer.sendDateToQueue("spring.test.queueKey2","Hello World spring.test.queueKey2");    }

實際情況可能需要我們去分離消費者和產生者的程式。當然spring還有負載平衡的配置，這裡就不多介紹了。