spring boot 整合 RabbitMq （注解）

1、增加rabbitmq的依赖包

<!-- ampq 依赖包 -->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-amqp</artifactId>
 </dependency>

2、application.yaml文件中配置

spring:
  rabbitmq:
      host: localhost
      port: 5672
      username: admin
      password: admin
      publisher-confirms: true
      virtual-host: /

3、RabbitMq的工厂连接和模板创建

@Configuration
public class RabbitConfig
{
    @Value("${spring.rabbitmq.host}")
    private String host;

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

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

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

    @Value("${spring.rabbitmq.publisher-confirms}")
    private Boolean publisherConfirms;

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

    //创建工厂连接
    @Bean
    public ConnectionFactory connectionFactory(){
        CachingConnectionFactory connectionFactory = new CachingConnectionFactory();
        connectionFactory.setAddresses(this.host);
        connectionFactory.setUsername(this.username);
        connectionFactory.setPassword(this.password);
        connectionFactory.setVirtualHost(this.virtualHost);
        connectionFactory.setPublisherConfirms(this.publisherConfirms); //必须要设置
        return connectionFactory;
    }

    //rabbitmq的模板配置
    @Bean
    @Scope(ConfigurableBeanFactory.SCOPE_PROTOTYPE) //必须是prototype类型
    public RabbitTemplate rabbitTemplate() {
        RabbitTemplate template = new RabbitTemplate(this.connectionFactory());
        //template.setConfirmCallback(); 设置消息确认
        //template.setReturnCallback();
        return template;
    }
}

4、创建交换机、创建队列、绑定交换机和队列

@Configuration
public class RabbitExchangeConfig
{
    //直连交换机
    @Bean
    public DirectExchange defaultExchange() {
        return new DirectExchange(RabbitConstant.EXCHANGE_NAME); 
    }

    //队列
    @Bean
    public Queue queue() {
        return QueueBuilder.durable(RabbitConstant.QUEUE_NAME).build();
    }

    //绑定
    @Bean
    public Binding binding() {
        return BindingBuilder.bind(this.queue()).to(this.defaultExchange()).with(RabbitConstant.ROUTING_KEY);
    }
}

5、消费者

@Component
public class RabbitSender implements RabbitTemplate.ConfirmCallback
{
    @Autowired
    private RabbitTemplate rabbitTemplate;

    public void sendMsg(String content) {
        CorrelationData correlationId = new CorrelationData(UUID.randomUUID().toString());
        this.rabbitTemplate.setConfirmCallback(this); //rabbitTemplate如果为单例的话，那回调就是最后设置的内容
        this.rabbitTemplate.convertAndSend(RabbitConstant.EXCHANGE_NAME,
                RabbitConstant.ROUTING_KEY, content, correlationId);
    }

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

6、消费者

@Configuration
public class RabbitReceive
{
    @Autowired
    private RabbitConfig rabbitConfig;

    @Autowired
    private RabbitExchangeConfig rabbitExchangeConfig;

    @Bean
    public SimpleMessageListenerContainer messageContainer() {
        SimpleMessageListenerContainer container = new SimpleMessageListenerContainer(rabbitConfig.connectionFactory());
        container.setQueues(rabbitExchangeConfig.queue()); //设置要监听的队列
        container.setExposeListenerChannel(true);
        container.setMaxConcurrentConsumers(1);
        container.setConcurrentConsumers(1);
        container.setAcknowledgeMode(AcknowledgeMode.MANUAL); //设置确认模式手工确认
        container.setMessageListener(new ChannelAwareMessageListener() {
                @Override
                public void onMessage(Message message, Channel channel) throws Exception {
                    byte[] body = message.getBody();
                    System.out.println("receive msg : " + new String(body));
                    channel.basicAck(message.getMessageProperties().getDeliveryTag(), false); //确认消息成功消费
            }
        });
        return container;
    }
}