RabbitMq消息消費者服務

開發工具Idea和Spring boot來開發的。

消息消費目前只是一個簡單的Demo，後續會處理成更智能一些。

首先配置文件類，RabbitMqConfig，裏面配置一些用戶名和密碼嗨喲隊列信息。

package com.basic.rabbitmq.consumer.config;

import com.basic.rabbitmq.consumer.listener.HandleMessageListenerAdapter;
import org.springframework.amqp.core.*;
import org.springframework.amqp.rabbit.connection.CachingConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitAdmin;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.core.env.Environment;
import com.rabbitmq.client.ConnectionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;

/**
 * Rabbitmq配置類
 * Created by sdc on 2017/7/4.
 */
@Configuration
@ComponentScan(basePackages = {"com.basic"})
@PropertySource(value = {"classpath:application.properties"})
public class RabbitMqConfig {

    @Autowired
    private Environment env;

    /**
     * 構建connectionfactory
     * @return
     * @throws Exception
     */
    @Bean
    public ConnectionFactory connectionFactory() throws Exception {
        ConnectionFactory connectionFactory = new ConnectionFactory();
        connectionFactory.setHost(env.getProperty("spring.rabbitmq.host"));
        connectionFactory.setPort(Integer.valueOf("5672".trim()));
        connectionFactory.setVirtualHost("/");
        connectionFactory.setUsername(env.getProperty("spring.rabbitmq.username"));
        connectionFactory.setPassword(env.getProperty("spring.rabbitmq.password"));
        return connectionFactory;
    }

    /**
     * CachingConnectionFactory
     * @return
     * @throws Exception
     */
    @Bean
    public CachingConnectionFactory cachingConnectionFactory() throws Exception {
        return new CachingConnectionFactory(connectionFactory());
    }

    /**
     * RabbitTemplate，類似於jdbctemplate一樣的工具類
     * @return
     * @throws Exception
     */
    @Bean
    public RabbitTemplate rabbitTemplate() throws  Exception {
        RabbitTemplate rabbitTemplate = new RabbitTemplate(cachingConnectionFactory());
        rabbitTemplate.setChannelTransacted(true);
        return rabbitTemplate;
    }

    @Bean
    public AmqpAdmin amqpAdmin() throws  Exception {
        return new RabbitAdmin(cachingConnectionFactory());
    }

    @Bean
    public SimpleMessageListenerContainer listenerContainer(
            @Qualifier("handleMessageListenerAdapter") HandleMessageListenerAdapter handleMessageListenerAdapter) throws Exception {
        //隊列名字
        String queueName = env.getProperty("emial.server.queue").trim();

        //單一的消息監聽容器
        SimpleMessageListenerContainer simpleMessageListenerContainer =
                new SimpleMessageListenerContainer(cachingConnectionFactory());
        simpleMessageListenerContainer.setQueueNames(queueName);
        simpleMessageListenerContainer.setMessageListener(handleMessageListenerAdapter);
        //手動設置 ACK，就是成功消費信息了，就設置一下這個，rabbitmq就從此隊列裏刪除這條信息了。
        simpleMessageListenerContainer.setAcknowledgeMode(AcknowledgeMode.MANUAL);

        return simpleMessageListenerContainer;
    }


}

我這裏配置了一個SimpleMessageListenerContainer，這個Bean，用來監聽隊列裏的消息的。

具體的

package com.basic.rabbitmq.consumer.listener;

        import com.rabbitmq.client.Channel;
        import org.springframework.amqp.core.Message;
        import org.springframework.amqp.rabbit.listener.adapter.MessageListenerAdapter;
        import org.springframework.beans.factory.annotation.Autowired;
        import org.springframework.context.annotation.ComponentScan;
        import org.springframework.mail.MailMessage;
        import org.springframework.mail.javamail.JavaMailSender;
        import org.springframework.stereotype.Component;

        import javax.annotation.Resource;

/**
 * 監聽消息的處理適配器
 * Created by sdc on 2017/7/10.
 */
@Component("handleMessageListenerAdapter")
public class HandleMessageListenerAdapter extends MessageListenerAdapter {

//    @Resource
//    private JavaMailSender mailSender;

    /**
     * 這塊和activemq那個監聽器差不多，都是監聽信息,也都是onMessage方法。
     * @param message
     * @param channel
     * @throws Exception
     */
    @Override
    public void onMessage(Message message, Channel channel) throws Exception {
        String messageDetail = new String(message.getBody()); //消息體
        System.out.println("消息消費:" + messageDetail);

        // 手動ACK
        channel.basicAck(message.getMessageProperties().getDeliveryTag(), false);
    }
}

還有一些配制文件，請看

http://10103778.blog.51cto.com/10093778/1945756

這個博客，就可以看到具體的配制了。

啟動這個項目，就可以從隊列消費消息了。消費者還是比較簡單的，對應到相應的隊列就可以處理了消息了。

本文出自 “10093778” 博客，請務必保留此出處http://10103778.blog.51cto.com/10093778/1945974

RabbitMq 實戰（一）