（转）RabbitMQ学习之spring整合发送异步消息(注解实现)

http://blog.csdn.net/zhu_tianwei/article/details/40919249

实现使用Exchange类型为DirectExchange. routingkey的名称默认为Queue的名称。注解实现异步发送消息。

1.生产者配置ProducerConfiguration.Java

package cn.slimsmart.rabbitmq.demo.spring.async;

import java.util.concurrent.atomic.AtomicInteger;

import org.springframework.amqp.rabbit.connection.CachingConnectionFactory;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor;

import com.rabbitmq.client.AMQP;

@Configuration
public class ProducerConfiguration {

    // 指定队列名称 routingkey的名称默认为Queue的名称，使用Exchange类型为DirectExchange
    protected final String helloWorldQueueName = "spring-queue-async";

    // 创建链接
    @Bean
    public ConnectionFactory connectionFactory() {
        CachingConnectionFactory connectionFactory = new CachingConnectionFactory("192.168.36.102");
        connectionFactory.setUsername("admin");
        connectionFactory.setPassword("admin");
        connectionFactory.setPort(AMQP.PROTOCOL.PORT);
        return connectionFactory;
    }

    // 创建rabbitTemplate 消息模板类
    @Bean
    public RabbitTemplate rabbitTemplate() {
        RabbitTemplate template = new RabbitTemplate(connectionFactory());
        template.setRoutingKey(this.helloWorldQueueName);
        return template;
    }

    //创建一个调度
    @Bean
    public ScheduledProducer scheduledProducer() {
        return new ScheduledProducer();
    }

    @Bean
    public BeanPostProcessor postProcessor() {
        return new ScheduledAnnotationBeanPostProcessor();
    }


    static class ScheduledProducer {

        @Autowired
        private volatile RabbitTemplate rabbitTemplate;

        //自增整数
        private final AtomicInteger counter = new AtomicInteger();
        /**
         * 每3秒发送一条消息
         *
         * Spring3中加强了注解的使用，其中计划任务也得到了增强，现在创建一个计划任务只需要两步就完成了：
        创建一个Java类，添加一个无参无返回值的方法，在方法上用@Scheduled注解修饰一下；
        在Spring配置文件中添加三个<task:**** />节点；
        参考：http://zywang.iteye.com/blog/949123
         */
        @Scheduled(fixedRate = 3000)
        public void sendMessage() {
            rabbitTemplate.convertAndSend("Hello World " + counter.incrementAndGet());
        }
    }

}

2.生产者启动类Producer,java

package cn.slimsmart.rabbitmq.demo.spring.async;

import org.springframework.context.annotation.AnnotationConfigApplicationContext;

public class Producer {

    public static void main(String[] args) {
        new AnnotationConfigApplicationContext(ProducerConfiguration.class);
    }
}

3.接收消息处理类ReceiveMsgHandler.java

package cn.slimsmart.rabbitmq.demo.spring.async;

public class ReceiveMsgHandler {

    public void handleMessage(String text) {
        System.out.println("Received: " + text);
    }
}

4.消费者配置ConsumerConfiguration

package cn.slimsmart.rabbitmq.demo.spring.async;

import org.springframework.amqp.core.AmqpAdmin;
import org.springframework.amqp.core.Queue;
import org.springframework.amqp.rabbit.connection.CachingConnectionFactory;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitAdmin;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer;
import org.springframework.amqp.rabbit.listener.adapter.MessageListenerAdapter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import com.rabbitmq.client.AMQP;

@Configuration
public class ConsumerConfiguration {

    // 指定队列名称 routingkey的名称默认为Queue的名称，使用Exchange类型为DirectExchange
    protected String springQueueDemo = "spring-queue-async";

    // 创建链接
    @Bean
    public ConnectionFactory connectionFactory() {
        CachingConnectionFactory connectionFactory = new CachingConnectionFactory(
                "192.168.36.102");
        connectionFactory.setUsername("admin");
        connectionFactory.setPassword("admin");
        connectionFactory.setPort(AMQP.PROTOCOL.PORT);
        return connectionFactory;
    }

    // 创建rabbitAdmin 代理类
    @Bean
    public AmqpAdmin amqpAdmin() {
        return new RabbitAdmin(connectionFactory());
    }

    // 创建rabbitTemplate 消息模板类
    @Bean
    public RabbitTemplate rabbitTemplate() {
        RabbitTemplate template = new RabbitTemplate(connectionFactory());
        // The routing key is set to the name of the queue by the broker for the
        // default exchange.
        template.setRoutingKey(this.springQueueDemo);
        // Where we will synchronously receive messages from
        template.setQueue(this.springQueueDemo);
        return template;
    }

    //
    // Every queue is bound to the default direct exchange
    public Queue helloWorldQueue() {
        return new Queue(this.springQueueDemo);
    }

    @Bean
    public SimpleMessageListenerContainer listenerContainer() {
        SimpleMessageListenerContainer container = new SimpleMessageListenerContainer();
        container.setConnectionFactory(connectionFactory());
        container.setQueueNames(this.springQueueDemo);
        container.setMessageListener(new MessageListenerAdapter(
                new ReceiveMsgHandler()));
        return container;
    }

}

5.消费者启动类Consumer.java

package cn.slimsmart.rabbitmq.demo.spring.async;

import org.springframework.context.annotation.AnnotationConfigApplicationContext;

public class Consumer {
    public static void main(String[] args) {
        new AnnotationConfigApplicationContext(ConsumerConfiguration.class);
    }
}

启动接收消息，再发送消息

Received: Hello World 1
Received: Hello World 2
Received: Hello World 3
Received: Hello World 4
Received: Hello World 5
Received: Hello World 6
Received: Hello World 7
......

若报spring-queue-async消息队列不存在，请在控制台添加。