RabbitMQ实践--与Spring的简单整合操作

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#spring #rabbitMQ #整合

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本文介绍了如何将RabbitMQ与Spring进行整合，包括在pom.xml中添加依赖，配置application-mq.xml和rabbitmq-config.properties文件，实现MQProducer和QueueListenter，并进行了测试。在整合过程中还提到了RabbitMQ的基础知识以及遇到的权限问题，如默认guest用户访问限制。

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了解RabbitMQ

消息队列综述 http://blog.youkuaiyun.com/qq_34039315/article/details/77338178
RabbitMQ–整体简介 http://blog.youkuaiyun.com/qq_34039315/article/details/77378641
RabbitMQ实践–安装、JAVA客户端操 http://blog.youkuaiyun.com/qq_34039315/article/details/77428467

与Spring整合

spring支持与rabbit的快速整合

pom.xml

需要的jar包

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>alltest</artifactId>
        <groupId>com.leo.test</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>rabbitmq</artifactId>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.10</version>
        </dependency>
        <dependency>
            <groupId>com.rabbitmq</groupId>
            <artifactId>amqp-client</artifactId>
            <version>4.1.0</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.25</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-simple</artifactId>
            <version>1.7.25</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.amqp</groupId>
            <artifactId>spring-rabbit</artifactId>
            <version>1.4.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.7.5</version>
        </dependency>
        <!-- spring全家桶 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
            <version>1.5.2.RELEASE</version>
        </dependency>
        <!-- 用来做spring测试 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>3.0.5.RELEASE</version>
        </dependency>
    </dependencies>
</project>

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" xmlns:util="http://www.springframework.org/schema/util"
       xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
    http://www.springframework.org/schema/rabbit
    http://www.springframework.org/schema/rabbit/spring-rabbit-1.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

    <description>rabbitmq 连接服务配置</description>

    <!-- 自动装载bean使能-->
    <context:component-scan base-package="com.leo.spring"/>
    <context:annotation-config/>

    <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations"> <!-- PropertyPlaceholderConfigurer类中有个locations属性，接收的是一个数组，即我们可以在下面配好多个properties文件 -->
            <array>
                <value>classpath:rabbitmq-config.properties</value>
            </array>
        </property>
    </bean>

    <!-- 连接配置 -->
    <rabbit:connection-factory id="connectionFactory" host="${mq.host}" username="${mq.username}" password="${mq.password}" port="${mq.port}"  virtual-host="${mq.vhost}"/>
    <rabbit:admin connection-factory="connectionFactory"/>

    <!--申明一个消息队列Queue   durable:是否持久化   exclusive: 仅创建者可以使用的私有队列，断开后自动删除
        auto_delete: 当所有消费客户端连接断开后，是否自动删除队列-->
    <rabbit:queue id="test_queue_key" name="test_queue_key" durable="true" auto-delete="false" exclusive="false" />

    <!-- 声明Exchange     rabbit:direct-exchange：定义exchange模式为direct -->
    <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>

    <!-- spring template声明-->
    <rabbit:template id="amqpTemplate"  exchange="test-mq-exchange" connection-factory="connectionFactory"  message-converter="jsonMessageConverter" />

    <rabbit:listener-container connection-factory="connectionFactory" acknowledge="auto">
        <rabbit:listener queues="test_queue_key" ref="queueListenter"/>
    </rabbit:listener-container>

    <!-- 消息对象json转换类 -->
    <bean id="jsonMessageConverter" class="org.springframework.amqp.support.converter.Jackson2JsonMessageConverter" />
</beans>

rabbitmq-config.properties

mq.host=127.0.0.1
mq.username=guest
mq.password=guest
mq.port=5672
mq.vhost=/

MQProducer及MQProducerImpl

/**
 *
 * @author xuexiaolei
 * @version 2017年08月22日
 */
public interface MQProducer {
    public void sendDataToQueue(String queueKey, Object object);
}

import org.springframework.amqp.core.AmqpTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

/**
 *
 * @author xuexiaolei
 * @version 2017年08月22日
 */
@Service
public class MQProducerImpl implements MQProducer{
    @Autowired
    private AmqpTemplate amqpTemplate;

    public void sendDataToQueue(String queueKey, Object object) {
            amqpTemplate.convertAndSend(queueKey, object);
    }

}

QueueListenter

import org.springframework.amqp.core.Message;
import org.springframework.amqp.core.MessageListener;
import org.springframework.stereotype.Component;

/**
 *
 * @author xuexiaolei
 * @version 2017年08月22日
 */
@Component
public class QueueListenter implements MessageListener {

    @Override
    public void onMessage(Message message) {
        System.out.println(message);
    }
}

运行测试

/**
 *
 * @author xuexiaolei
 * @version 2017年08月22日
 */
@RunWith(value = SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {
                "classpath:/application-mq.xml"})
public class MQProducerImplTest {
    @Autowired MQProducer mqProducer;

    final String queue_key = "test_queue_key";

    @Test public void sendDataToQueue() throws Exception {
        Map<String,Object> msg = new HashMap();
        msg.put("data","hello,rabbmitmq!");
        mqProducer.sendDataToQueue(queue_key, msg);
    }

}

问题小记

默认的guest用户只能访问“/”的virtualHost，访问其他的virtualHost会出现下面的错误

Caused by: com.rabbitmq.client.ShutdownSignalException: connection error; protocol method: #method<connection.close>(reply-code=530, reply-text=NOT_ALLOWED - access to vhost 'testmq' refused for user 'guest', class-id=10, method-id=40)
    at com.rabbitmq.utility.ValueOrException.getValue(ValueOrException.java:66)
    at com.rabbitmq.utility.BlockingValueOrException.uninterruptibleGetValue(BlockingValueOrException.java:36)
    at com.rabbitmq.client.impl.AMQChannel$BlockingRpcContinuation.getReply(AMQChannel.java:398)
    at com.rabbitmq.client.impl.AMQChannel.privateRpc(AMQChannel.java:244)
    at com.rabbitmq.client.impl.AMQChannel.exnWrappingRpc(AMQChannel.java:128)
    ... 46 more