Spring Boot集成六大常用中间件，附集成源码，亲测有效

Spring Boot 整合常见的六大中间件，包括：

1. 消息队列（MQ）: RabbitMQ / Kafka
2. 缓存数据库: Redis
3. 数据库: MySQL
4. 配置中心: Spring Cloud Config
5. 服务注册与发现: Eureka
6. 服务调用: OpenFeign

以下是简化的整合示例代码：

1. RabbitMQ 配置

@Configuration
public class RabbitMQConfig {
    @Bean
    public Queue myQueue() {
        return new Queue("myQueue", true);
    }
}

2. Redis 配置

@Configuration
public class RedisConfig {
    @Bean
    public LettuceConnectionFactory redisConnectionFactory() {
        return new LettuceConnectionFactory(); // 配置连接信息
    }
 
    @Bean
    public RedisTemplate<String, Object> redisTemplate(LettuceConnectionFactory connectionFactory) {
        RedisTemplate<String, Object> template = new RedisTemplate<>();
        template.setConnectionFactory(connectionFactory);
        return template;
    }
}

3. MySQL 配置

@Configuration
@EnableJpaRepositories(basePackages = "com.example.repository")
@EnableTransactionManagement
public class MySQLConfig {
    @Bean
    public LocalContainerEntityManagerFactoryBean entityManagerFactory(DataSource dataSource, JpaVendorAdapter jpaVendorAdapter) {
        LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
        em.setDataSource(dataSource);
        em.setPackagesToScan("com.example.entity");
        em.setJpaVendorAdapter(jpaVendorAdapter);
        return em;
    }
 
    @Bean
    public DataSource dataSource() {
        return DataSourceBuilder.create().build();
    }
 
    @Bean
    public JpaVendorAdapter jpaVendorAdapter() {
        return new HibernateJpaVendorAdapter();
    }
 
    @Bean
    public PlatformTransactionManager transactionManager(EntityManagerFactory entityManagerFactory) {
        return new JpaTransactionManager(entityManagerFactory);
    }
}

4. Spring Cloud Config 配置

@Configuration
public class ConfigServerConfig {
    @Bean
    public ConfigService configService() {
        /