SpringBoot(二十二)集成RabbitMQ---MQ实战演练

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-amqp</artifactId>
        </dependency>

# ----- MQ -------- #
spring.rabbitmq.host=192.168.11.108
spring.rabbitmq.port=5672
spring.rabbitmq.username=guest
spring.rabbitmq.password=guest

package com.demo.mq.model;

import java.io.Serializable;
import java.util.UUID;

/**
 * Created by toutou on 2019/1/1.
 */
public class MyModel implements Serializable {
    private static final long serialVersionUID = 1L;
    private UUID id;
    private String info;

    public UUID getId() {
        return id;
    }

    public void setId(UUID id) {
        this.id = id;
    }

    public String getInfo() {
        return info;
    }

    public void setInfo(String info) {
        this.info = info;
    }
}

package com.demo.mq.common;

import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.BindingBuilder;
import org.springframework.amqp.core.DirectExchange;
import org.springframework.amqp.core.Queue;
import org.springframework.amqp.rabbit.connection.CachingConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.beans.factory.config.ConfigurableBeanFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Scope;

/**
 * Created by toutou on 2019/1/1.
 */
@Configuration
public class RabbitConfig {

    @Value("${spring.rabbitmq.host}")
    private String host;

    @Value("${spring.rabbitmq.port}")
    private int port;

    @Value("${spring.rabbitmq.username}")
    private String username;

    @Value("${spring.rabbitmq.password}")
    private String password;


    public static final String EXCHANGE_A = "my-mq-exchange_A";
    public static final String EXCHANGE_B = "my-mq-exchange_B";


    public static final String QUEUE_A = "QUEUE_A";
    public static final String QUEUE_B = "QUEUE_B";

    public static final String ROUTINGKEY_A = "spring-boot-routingKey_A";
    public static final String ROUTINGKEY_B = "spring-boot-routingKey_B";

    @Bean
    public CachingConnectionFactory connectionFactory() {
        CachingConnectionFactory connectionFactory = new CachingConnectionFactory(host,port);
        connectionFactory.setUsername(username);
        connectionFactory.setPassword(password);
        connectionFactory.setVirtualHost("/");
        connectionFactory.setPublisherConfirms(true);
        return connectionFactory;
    }

    @Bean
    @Scope(ConfigurableBeanFactory.SCOPE_PROTOTYPE)
    public RabbitTemplate rabbitTemplate() {
        RabbitTemplate template = new RabbitTemplate(connectionFactory());
        return template;
    }

    /**
     * 针对消费者配置
     * 1. 设置交换机类型
     * 2. 将队列绑定到交换机
     FanoutExchange: 将消息分发到所有的绑定队列，无routingkey的概念
     HeadersExchange ：通过添加属性key-value匹配
     DirectExchange:按照routingkey分发到指定队列
     TopicExchange:多关键字匹配
     */
    @Bean
    public DirectExchange defaultExchange() {
        return new DirectExchange(EXCHANGE_A);
    }

    /**
     * 获取队列A
     * @return
     */
    @Bean
    public Queue queueA() {
        return new Queue(QUEUE_A, true); //队列持久
    }

    /**
     * 获取队列B
     * @return
     */
    @Bean
    public Queue queueB() {
        return new Queue(QUEUE_B, true); //队列持久
    }

    /**
     * 把交换机，队列，通过路由关键字进行绑定
     * @return
     */
    @Bean
    public Binding binding() {

        return BindingBuilder.bind(queueA()).to(defaultExchange()).with(RabbitConfig.ROUTINGKEY_A);
    }

    /**
     * 一个交换机可以绑定多个消息队列，也就是消息通过一个交换机，可以分发到不同的队列当中去。
     * @return
     */
    @Bean
    public Binding bindingB(){
        return BindingBuilder.bind(queueB()).to(defaultExchange()).with(RabbitConfig.ROUTINGKEY_B);
    }

}

package com.demo.mq.producer;

import com.demo.mq.common.RabbitConfig;
import com.demo.mq.model.MyModel;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.rabbit.support.CorrelationData;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

/**
 * Created by toutou on 2019/1/1.
 */
@Component
public class MyProducer implements RabbitTemplate.ConfirmCallback {

    private final Logger logger = LoggerFactory.getLogger(this.getClass());

    //由于rabbitTemplate的scope属性设置为ConfigurableBeanFactory.SCOPE_PROTOTYPE，所以不能自动注入
    private RabbitTemplate rabbitTemplate;

    /**
     * 构造方法注入rabbitTemplate
     */
    @Autowired
    public MyProducer(RabbitTemplate rabbitTemplate) {
        this.rabbitTemplate = rabbitTemplate;
        rabbitTemplate.setConfirmCallback(this); //rabbitTemplate如果为单例的话，那回调就是最后设置的内容
    }

    public void sendMsg(MyModel model) {
        //把消息放入ROUTINGKEY_A对应的队列当中去，对应的是队列A
        rabbitTemplate.convertAndSend(RabbitConfig.EXCHANGE_A, RabbitConfig.ROUTINGKEY_A, model);
    }

    /**
     * 回调
     */
    @Override
    public void confirm(CorrelationData correlationData, boolean ack, String cause) {
        logger.info(" 回调id:" + correlationData);
        if (ack) {
            logger.info("消息成功消费");
        } else {
            logger.info("消息消费失败:" + cause);
        }
    }
}

package com.demo.mq.receiver;

import com.demo.mq.common.RabbitConfig;
import com.demo.mq.model.MyModel;
import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Component;

/**
 * Created by toutou on 2019/1/1.
 */
@Component
@RabbitListener(queues = RabbitConfig.QUEUE_A)
public class MyReceiver {
    @RabbitHandler
    public void process(MyModel model) {
        System.out.println("接收处理队列A当中的消息： " + model.getInfo());
    }
}

package com.demo.controller;

import com.demo.mq.model.MyModel;
import com.demo.mq.producer.MyProducer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.UUID;

/**
 * Created by toutou on 2019/1/1.
 */
@RestController
@Slf4j
public class MyMQController {
    @Autowired
    MyProducer myProducers;

    @GetMapping("/mq/producer")
    public String myProducer(String content){
        MyModel model = new MyModel();
        model.setId(UUID.randomUUID());
        model.setInfo(content);
        myProducers.sendMsg(model);
        return "已发送：" + content;
    }
}