spring整合消息队列rabbitmq(转载)

spring大家太熟，就不多说了

rabbitmq一个amqp的队列服务实现,具体介绍请参考本文http://lynnkong.iteye.com/blog/1699684

本文侧重介绍如何将rabbitmq整合到项目中

ps:本文只是简单一个整合介绍，属于抛砖引玉，具体实现还需大家深入研究哈..

 

1.首先是生产者配置

 

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<? xml version = "1.0" encoding = "UTF-8" ?> < beans xmlns = "http://www.springframework.org/schema/beans"         xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance"         xmlns:context = "http://www.springframework.org/schema/context"         xmlns:rabbit = "http://www.springframework.org/schema/rabbit"         xsi:schemaLocation="              http://www.springframework.org/schema/beans                  http://www.springframework.org/schema/beans/spring-beans.xsd              http://www.springframework.org/schema/context                  http://www.springframework.org/schema/context/spring-context.xsd              http://www.springframework.org/schema/rabbit                  http://www.springframework.org/schema/rabbit/spring-rabbit-1.0.xsd">             <!-- 连接服务配置  -->     < rabbit:connection-factory id = "connectionFactory" host = "localhost" 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<span></ span >">          < 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.convert.FastJsonMessageConverter" ></ bean >            <-- spring template声明-->      < rabbit:template exchange = "my-mq-exchange" id = "amqpTemplate"  connection-factory = "connectionFactory"  message-converter = "jsonMessageConverter" /> </ beans >

2.fastjson messageconver插件实现

 

 

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import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; 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;  // 这里本人换成fastjson的jsonobject实现 import fe.json.FastJson;   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 ;      }            public <T> T fromMessage(Message message,T t) {          String json = "" ;          try {              json = new String(message.getBody(),defaultCharset);          } catch (UnsupportedEncodingException e) {              e.printStackTrace();          }          return (T) FastJson.fromJson(json, t.getClass());      }                protected Message createMessage(Object objectToConvert,              MessageProperties messageProperties)              throws MessageConversionException {          byte [] bytes = null ;          try {              String jsonString = FastJson.toJson(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);        } }

3.生产者端调用

 

 

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import java.util.List;   import org.springframework.amqp.core.AmqpTemplate;     public class MyMqGatway {            @Autowired      private AmqpTemplate amqpTemplate;            public void sendDataToCrQueue(Object obj) {          amqpTemplate.convertAndSend( "queue_one_key" , obj);      }   }

4.消费者端配置(与生产者端大同小异)

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<? xml version = "1.0" encoding = "UTF-8" ?> < beans xmlns = "http://www.springframework.org/schema/beans"         xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance"         xmlns:context = "http://www.springframework.org/schema/context"         xmlns:rabbit = "http://www.springframework.org/schema/rabbit"         xsi:schemaLocation="              http://www.springframework.org/schema/beans                  http://www.springframework.org/schema/beans/spring-beans.xsd              http://www.springframework.org/schema/context                  http://www.springframework.org/schema/context/spring-context.xsd              http://www.springframework.org/schema/rabbit                  http://www.springframework.org/schema/rabbit/spring-rabbit-1.0.xsd">             <!-- 连接服务配置  -->     < rabbit:connection-factory id = "connectionFactory" host = "localhost" 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 >                     <!-- 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  taskExecutor这个需要自己实现一个连接池 按照官方说法 除非特别大的数据量 一般不需要连接池 -->      < rabbit:listener-container connection-factory = "connectionFactory" acknowledge = "auto" task-executor = "taskExecutor" >          < rabbit:listener queues = "queue_one" ref = "queueOneLitener" />      </ rabbit:listener-container > </ beans >

 

5.消费者端调用

 

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

6.由于消费端当队列有数据到达时，对应监听的对象就会被通知到，无法做到批量获取，批量入库，因此可以在消费端缓存一个临时队列，将mq取出来的数据存入本地队列，后台线程定时批量处理即可