SpringBoot整合RabbitMQ及原理

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-amqp</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>

server.port=8082
#rabbitmq服务器ip
spring.rabbitmq.host=localhost
#rabbitmq的端口
spring.rabbitmq.port=5672
#用户名
spring.rabbitmq.username=用户名
#密码
spring.rabbitmq.password=密码
#配置虚拟机
spring.rabbitmq.virtual-host=demo

@Configuration
public class RabbitMqConfig {
    @Bean
    public RabbitTemplate rabbitTemplate(CachingConnectionFactory connectionFactory) {
        RabbitTemplate rabbitTemplate = new RabbitTemplate(connectionFactory);
        rabbitTemplate.setMessageConverter(jackson2JsonMessageConverter());
        return rabbitTemplate;
    }
    @Bean
    public MessageConverter jackson2JsonMessageConverter() {
        return new Jackson2JsonMessageConverter();
    }
    @Bean
    public DirectExchange getExchange(){
        return new DirectExchange("directExchange",false,false);
    }
    @Bean
    public Queue getQueue(){
        return new Queue("publisher.addUser",true,false,false);
    }
    @Bean
    public Binding getBinding(DirectExchange exchange,Queue queue){
        return BindingBuilder.bind(queue).to(exchange).with("publisher.addUser");
    }
}

@Data
public class User {
    private Long id;
    private String name;
    private String desc;
}

public interface PublisherService {
    /**
     * 添加用户
     * @param user 用户信息
     */
    void addUser(User user);
}

@RequiredArgsConstructor
@Service
public class PublisherServiceImpl implements PublisherService{
    private final RabbitTemplate rabbitTemplate;
    @Override
    public void addUser(User user) {
        rabbitTemplate.convertAndSend("directExchange","publisher.addUser",user);
    }
}

@RequiredArgsConstructor
@RestController
@RequestMapping("/user")
public class UserController {
    private final PublisherService publisherService;
    @PostMapping("/add")
    public void add(){
        User user = new User();
        user.setId(1000L);
        user.setName("黄忠");
        user.setDesc("老兵不死，只是逐渐凋零");
        publisherService.addUser(user);
    }
}

@Service
@Slf4j
public class ConsumerService {
    @RabbitListener(queues ="publisher.addUser")
    public void addUser(String userStr){
        User user = JSONObject.parseObject(userStr,User.class);
        log.info(user.toString());
    }
}