spring boot 集成 rabbit mq

传送门：https://blog.csdn.net/qq_38455201/article/details/80308771

传送门：https://blog.csdn.net/zhuzhezhuzhe1/article/details/80454956

 

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

spring:
    rabbitmq:
        host: 
        port: 5583
        username: 
        password: 
        virtual-host: /
        connection-timeout: 15000
        publisher-confirms: true
        publisher-returns: true
        listener.simple.acknowledge-mode: manual


@Component
public class BizMsgListener {

    /** 日志 */
    private static final Logger log = LoggerFactory.getLogger(BizMsgListener.class);

    @Autowired
    private ReportCreditService reportCreditService;

    /**
     * @param message
     * @param channel
     * @throws IOException
     */
    @RabbitListener(queues = "QUEUE_BIZ")
    @RabbitHandler
    public void process(Message message, Channel channel) {
        String msg = new String(message.getBody());
        log.info(":" + msg);

        try {
            /** RabbitMQ支持消息应答机制。
             当消费者接收到消息并完成任务后会往RabbitMQ服务器发送一条确认的命令，然后RabbitMQ才会将消息删除。*/
            channel.basicAck(message.getMessageProperties().getDeliveryTag(), false);

            // 
            reportCreditService.parseResultInDB(msg);
        }catch (Exception e) {
            log.error(""+e.getMessage());
            e.printStackTrace();
        }
    }
}




/**
 * RabbitMq 配置类
 *
 * Broker:它提供一种传输服务,它的角色就是维护一条从生产者到消费者的路线，保证数据能按照指定的方式进行传输,
 * Exchange：消息交换机,它指定消息按什么规则,路由到哪个队列。
 * Queue:消息的载体,每个消息都会被投到一个或多个队列。
 * Binding:绑定，它的作用就是把exchange和queue按照路由规则绑定起来.
 * Routing Key:路由关键字,exchange根据这个关键字进行消息投递。
 * vhost:虚拟主机,一个broker里可以有多个vhost，用作不同用户的权限分离。
 * Producer:消息生产者,就是投递消息的程序.
 * Consumer:消息消费者,就是接受消息的程序.
 * Channel:消息通道,在客户端的每个连接里,可建立多个channel.
 *
 */
@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;
    @Value("${spring.rabbitmq.virtual-host}")
    private String vtHost;
    @Value("${spring.rabbitmq.publisher-confirms}")
    private boolean pubConf;
    @Value("${spring.rabbitmq.publisher-returns}")
    private boolean pubReturns;

    // 业务
    public static final String EXCHANGE_BIZ = "my-mq-exchange_biz";
    public static final String QUEUE_BIZ = "QUEUE_BIZ";
    public static final String ROUTINGKEY_BIZ = "routingKey_biz";

    /**
     * 创建工厂连接
     * @return
     */
    @Bean
    public ConnectionFactory connectionFactory() {
        CachingConnectionFactory connectionFactory = new CachingConnectionFactory(host,port);
        connectionFactory.setUsername(username);
        connectionFactory.setPassword(password);
        connectionFactory.setVirtualHost(vtHost);
        connectionFactory.setPublisherConfirms(pubConf);
        connectionFactory.setPublisherReturns(pubReturns);
        return connectionFactory;
    }

    /**
     * rabbitmq的模板配置
     * 必须是prototype类型
     * @return
     */
    @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 bizExchange() {
        return new DirectExchange(EXCHANGE_BIZ);
    }

    /**
     * 队列持久化
     * @return
     */
    @Bean
    public Queue queueBiz() {
        return new Queue(QUEUE_BIZ, true);
    }

    /**
     * 绑定
     * @return
     */
    @Bean
    public Binding bindingBiz() {
        return BindingBuilder.bind(queueBiz()).to(bizExchange()).with(RabbitConfig.ROUTINGKEY_BIZ);
    }
}


@Component
public class MsgProducer implements RabbitTemplate.ConfirmCallback {
    /** 日志 */
    private static final Logger log = LoggerFactory.getLogger(MsgProducer.class);

    /**
     * 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 MsgProducer(RabbitTemplate rabbitTemplate) {
        this.rabbitTemplate = rabbitTemplate;
        //rabbitTemplate如果为单例的话，那回调就是最后设置的内容
        rabbitTemplate.setConfirmCallback(this);
    }

    /**
     * 消息用于业务记录
     * @param content
     */
    public void sendBizMsg(String content) {
        CorrelationData correlationId = new CorrelationData(UUID.randomUUID().toString());
        //把消息放入对应的队列当中
        this.rabbitTemplate.convertAndSend(RabbitConfig.EXCHANGE_BIZ, RabbitConfig.ROUTINGKEY_BIZ, content, correlationId);
    }

    /**
     * 回调
     * @param correlationData
     * @param ack
     * @param cause
     */
    @Override
    public void confirm(CorrelationData correlationData, boolean ack, String cause) {
        log.info("回调ID："+correlationData);
        if (ack) {
            log.info("消息成功消费");
        } else {
            log.info("消息消费失败:" + cause+"\n重新发送");
        }
    }
}