Spring整合Rabbitmq

摘要 

RabbitMQ是流行的开源消息队列系统，用erlang语言开发。在项目中，将一些无需即时返回且耗时的操作提取出来，进行了异步处理，需要用到RabbitMQ

没有找到一篇完整的文章介绍Spring如何整合Rabbitmq应用，琢磨一天搞出的一个入门的demo与伙伴们分享.

第一步linux环境下安装rabbitMQ,小弟用的是ubantu，不想浪费太多时间这种安装上

sudo apt-get install rabbitmq-server默认启动端口5672 测试账户guest 密码guest

官方常用命令，想更改用户的可以参考，这里不作详细说明http://www.rabbitmq.com/man/rabbitmqctl.1.man.html

也可以省去安装115.28.141.137个人私服已配置好

第二步添加依赖包

<pre name="code" class="html"><dependency><groupId>org.springframework.amqp</groupId><artifactId>spring-rabbit</artifactId><version>1.3.5.RELEASE</version></dependency><dependency><groupId>commons-lang</groupId><artifactId>commons-lang</artifactId><version>2.6</version></dependency>

第三步配置生产者工程服务配置

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:context="http://www.springframework.org/schema/context"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:task="http://www.springframework.org/schema/task"    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.xsd      http://www.springframework.org/schema/context      http://www.springframework.org/schema/context/spring-context.xsd      http://www.springframework.org/schema/integration/ip       http://www.springframework.org/schema/integration/ip/spring-integration-ip-2.0.xsd      http://www.springframework.org/schema/integration http://www.springframework.org/schema/integration/spring-integration.xsd      http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.0.xsd      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      ">     <!-- 引入jdbc配置文件 -->    <context:property-placeholder location="classpath:conf/jdbc.properties" />     <!-- 扫描文件（自动将servicec层注入） -->    <context:component-scan base-package="mq.service" />    <!-- 连接服务配置 -->    <rabbit:connection-factory id="connectionFactory"        host="115.28.141.137" username="guest" password="guest" port="5672" />     <rabbit:admin connection-factory="connectionFactory" />     <!-- queue 队列声明 -->    <rabbit:queue id="queue_one" durable="true" auto-delete="false"        exclusive="false" name="queue_one" />      <!-- exchange queue binging key 绑定 -->    <rabbit:direct-exchange name="my-mq-exchange"        durable="true" auto-delete="false" id="my-mq-exchange">        <rabbit:bindings>            <rabbit:binding queue="queue_one" key="queue_one_key" />        </rabbit:bindings>    </rabbit:direct-exchange>     <!-- spring amqp默认的是jackson    的一个插件,目的将生产者生产的数据转换为json存入消息队列，由于fastjson的速度快于jackson,这里替换为fastjson的一个实现    -->    <bean id="jsonMessageConverter" class="mq.util.FastJsonMessageConverter"></bean>     <!-- spring template声明-->    <rabbit:template exchange="my-mq-exchange" id="amqpTemplate"        connection-factory="connectionFactory" message-converter="jsonMessageConverter" /></beans>

FastJsonMessageConverter 类代码如下

package mq.util; import java.io.UnsupportedEncodingException; import org.springframework.amqp.core.Message;import org.springframework.amqp.core.MessageProperties;import org.springframework.amqp.support.converter.AbstractMessageConverter;import org.springframework.amqp.support.converter.MessageConversionException; import com.alibaba.druid.support.logging.Log;import com.alibaba.druid.support.logging.LogFactory;import com.alibaba.fastjson.JSON; public class FastJsonMessageConverter  extends AbstractMessageConverter {    private static Log log = LogFactory.getLog(FastJsonMessageConverter.class);      public static final String DEFAULT_CHARSET = "UTF-8";      private volatile String defaultCharset = DEFAULT_CHARSET;          public FastJsonMessageConverter() {        super();        //init();    }          public void setDefaultCharset(String defaultCharset) {        this.defaultCharset = (defaultCharset != null) ? defaultCharset                : DEFAULT_CHARSET;    }          public Object fromMessage(Message message)            throws MessageConversionException {        return null;    }          @SuppressWarnings("unchecked")    public <T> T fromMessage(Message message,T t) {        String json = "";        try {            json = new String(message.getBody(),"UTF-8");        } catch (UnsupportedEncodingException e) {            e.printStackTrace();        }        return (T) JSON.parseObject(json, t.getClass());    }               protected Message createMessage(Object objectToConvert,            MessageProperties messageProperties)            throws MessageConversionException {        byte[] bytes = null;        try {            String jsonString = JSON.toJSONString(objectToConvert);            bytes = jsonString.getBytes(this.defaultCharset);        } catch (UnsupportedEncodingException e) {            throw new MessageConversionException(                    "Failed to convert Message content", e);        }         messageProperties.setContentType(MessageProperties.CONTENT_TYPE_JSON);        messageProperties.setContentEncoding(this.defaultCharset);        if (bytes != null) {            messageProperties.setContentLength(bytes.length);        }        return new Message(bytes, messageProperties);      }}

生产者代码Producer

package mq.service; import org.springframework.amqp.core.AmqpTemplate;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Service;  @Servicepublic class ProducerMq {          @Autowired    private AmqpTemplate amqpTemplate;          public void sendDataToCrQueue(Object obj) {        amqpTemplate.convertAndSend("queue_one_key", obj);    }   }

第四步配置消费者服务工程配置

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:context="http://www.springframework.org/schema/context"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:task="http://www.springframework.org/schema/task"    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.xsd      http://www.springframework.org/schema/context      http://www.springframework.org/schema/context/spring-context.xsd      http://www.springframework.org/schema/integration/ip       http://www.springframework.org/schema/integration/ip/spring-integration-ip-2.0.xsd      http://www.springframework.org/schema/integration http://www.springframework.org/schema/integration/spring-integration.xsd      http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.0.xsd      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      ">     <!-- 引入jdbc配置文件 -->    <context:property-placeholder location="classpath:conf/jdbc.properties" />     <!-- 扫描文件（自动将servicec层注入） -->    <context:component-scan base-package="mq.service" />    <task:executor id="taskExecutor" pool-size="1-4" queue-capacity="128" />       <!-- 连接服务配置  -->   <rabbit:connection-factory id="connectionFactory" host="115.28.141.137" username="guest"        password="guest" port="5672"  />             <rabbit:admin connection-factory="connectionFactory"/>        <!-- queue 队列声明-->   <rabbit:queue id="queue_one" durable="true" auto-delete="false" exclusive="false" name="queue_one"/>    <!-- exchange queue binging key 绑定 -->    <rabbit:direct-exchange name="my-mq-exchange" durable="true" auto-delete="false" id="my-mq-exchange">        <rabbit:bindings>            <rabbit:binding queue="queue_one" key="queue_one_key"/>        </rabbit:bindings>    </rabbit:direct-exchange>    <bean id="queueOneLitener" class="mq.service.QueueOneLitener" />        <!-- queue litener  观察 监听模式 当有消息到达时会通知监听在对应的队列上的监听对象-->    <rabbit:listener-container connection-factory="connectionFactory" acknowledge="auto" task-executor="taskExecutor">        <rabbit:listener queues="queue_one" ref="queueOneLitener"/> <span></span> </rabbit:listener-container></beans>

监听器代码queueOneLitener

package mq.service; import org.springframework.amqp.core.Message;import org.springframework.amqp.core.MessageListener;  public class QueueOneLitener implements  MessageListener{    public void onMessage(Message message) {             System.out.println(" data :" +new String(message.getBody()));    }}

第五步测试

消费者端控制层生产数据

控制层Controller

package mq.controller; import javax.annotation.Resource; import mq.service.ProducerMq; import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping; @Controllerpublic class MessageController {    @Resource    private ProducerMq producer;    @RequestMapping("/producer")    public String producer() throws Exception {        for(int i=0;i<100;i++){            producer.sendDataToCrQueue("data"+i);        }        return "index";    }  }

运行结果