如何在Spring Boot中配置RabbitMQ身份验证机制？

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

spring.rabbitmq.host=your-rabbitmq-host
spring.rabbitmq.port=5672
spring.rabbitmq.username=your-username
spring.rabbitmq.password=your-password
spring.rabbitmq.virtual-host=your-virtual-host

import org.springframework.amqp.rabbit.connection.CachingConnectionFactory;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.connection.RabbitConnectionFactoryBean;
import org.springframework.amqp.rabbit.connection.RabbitMQProperties;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.amqp.RabbitProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class RabbitMQConfig {

    @Autowired
    private RabbitProperties rabbitProperties;

    @Bean
    public ConnectionFactory connectionFactory() throws Exception {
        RabbitConnectionFactoryBean factoryBean = new RabbitConnectionFactoryBean();
        factoryBean.setHost(rabbitProperties.getHost());
        factoryBean.setPort(rabbitProperties.getPort());
        factoryBean.setUsername(rabbitProperties.getUsername());
        factoryBean.setPassword(rabbitProperties.getPassword());
        factoryBean.setVirtualHost(rabbitProperties.getVirtualHost());
        factoryBean.afterPropertiesSet();
        CachingConnectionFactory connectionFactory = new CachingConnectionFactory(factoryBean.getObject());
        return connectionFactory;
    }
}

import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

@Component
public class MyRabbitMQProducer {

    @Autowired
    private RabbitTemplate rabbitTemplate;

    public void sendMessage(String message) {
        rabbitTemplate.convertAndSend("exchange", "routingKey", message);
    }
}