基于 Spring Cloud+Spring Boot+Nacos+Dubbo+mybatis plus+RocketMQ+Sentinel+Seata+mysql 搭建一个项目

好的，以下是基于 Spring Cloud+Spring Boot+Nacos+Dubbo+mybatis plus+RocketMQ+Sentinel+Seata+mysql 搭建一个项目的步骤： 1. 首先，你需要安装并启动 Nacos 作为服务注册中心和配置中心。可以去官网下载最新版本的 Nacos，然后解压并启动即可。 2. 接下来，使用 Spring Initializr 创建一个基于 Spring Boot 的项目，并添加以下依赖： ``` <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId> </dependency> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-starter-dubbo</artifactId> <exclusions> <exclusion> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-logging</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-alibaba-seata</artifactId> </dependency> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-starter-sentinel</artifactId> </dependency> <dependency> <groupId>org.apache.rocketmq</groupId> <artifactId>rocketmq-spring-boot-starter</artifactId> </dependency> <dependency> <groupId>com.baomidou</groupId> <artifactId>mybatis-plus-boot-starter</artifactId> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> </dependency> ``` 3. 配置 Nacos 作为服务注册中心和配置中心： ``` spring.cloud.nacos.discovery.server-addr=127.0.0.1:8848 spring.cloud.nacos.config.server-addr=127.0.0.1:8848 spring.cloud.nacos.config.prefix=/config spring.cloud.nacos.config.file-extension=properties ``` 4. 配置 Dubbo： ``` spring.application.name=provider-service spring.dubbo.application.name=provider-service spring.dubbo.registry.address=nacos://127.0.0.1:8848 spring.dubbo.protocol.name=dubbo spring.dubbo.protocol.port=20880 ``` 5. 配置 RocketMQ： ``` spring.rocketmq.name-server=127.0.0.1:9876 spring.rocketmq.producer.group=producer-group spring.rocketmq.consumer.group=consumer-group ``` 6. 配置 Sentinel： ``` spring.cloud.sentinel.transport.dashboard=127.0.0.1:8080 ``` 7. 配置 Seata： ``` spring.cloud.alibaba.seata.tx-service-group=my_seata_tx_group spring.cloud.alibaba.seata.tx-service-mode=AT spring.cloud.alibaba.seata.config.type=nacos spring.cloud.alibaba.seata.config.nacos.server-addr=127.0.0.1:8848 spring.cloud.alibaba.seata.config.nacos.namespace=seata-dev ``` 8. 配置 MySQL 数据源： ``` spring.datasource.url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=UTF-8&useSSL=false spring.datasource.username=root spring.datasource.password=root spring.datasource.driver-class-name=com.mysql.jdbc.Driver ``` 9. 编写 Dubbo 服务接口和实现类： ``` public interface UserService { User getUserById(Long id); } @Service public class UserServiceImpl implements UserService { @Autowired private UserDao userDao; @Override public User getUserById(Long id) { return userDao.selectById(id); } } ``` 10. 配置 Dubbo 服务提供者： ``` @Configuration public class DubboConfig { @Reference private UserService userService; @Bean public ApplicationRunner runner() { return args -> { User user = userService.getUserById(1L); System.out.println(user); }; } } ``` 11. 编写 RocketMQ 生产者和消费者： ``` @Component public class MessageProducer { @Autowired private RocketMQTemplate rocketMQTemplate; public void send(String message) { rocketMQTemplate.convertAndSend("test-topic", message); } } @Component @RocketMQMessageListener(topic = "test-topic", consumerGroup = "test-consumer-group") public class MessageConsumer implements RocketMQListener<String> { @Override public void onMessage(String message) { System.out.println("Received message: " + message); } } ``` 12. 编写 MySQL 数据访问层： ``` @Mapper public interface UserDao extends BaseMapper<User> { } ``` 13. 使用 Seata 进行分布式事务控制： ``` @Service public class OrderServiceImpl implements OrderService { @Autowired private OrderDao orderDao; @GlobalTransactional @Override public void createOrder(Order order) { orderDao.insert(order); // 调用其他服务，可能会涉及到分布式事务操作 // ... } } ``` 14. 使用 Sentinel 进行服务限流和熔断： ``` @GetMapping("/hello") @SentinelResource(value = "hello", blockHandler = "helloBlockHandler") public String hello() { return "Hello World!"; } public String helloBlockHandler(BlockException ex) { return "Blocked by Sentinel: " + ex.getClass().getSimpleName(); } ``` 15. 最后，启动项目并测试各个功能是否正常运行。 以上就是基于 Spring Cloud+Spring Boot+Nacos+Dubbo+mybatis plus+RocketMQ+Sentinel+Seata+mysql 搭建一个项目的步骤。