Dubbo3.0 Demo

将SpringBoot工程集成Dubbo

1.创建父工程

2.创建子工程consumer，provider

3.初始化工程

4.引入依赖

在provider和consumer中引入dubbo依赖

        <dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-spring-boot-starter</artifactId><version>3.0.7</version></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-rpc-dubbo</artifactId><version>3.0.7</version></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-registry-zookeeper</artifactId><version>3.0.7</version></dependency>

5.新建common模块

在common模块创建User类
User

@Data
@AllArgsConstructor
public class User implements Serializable {private String uid;private String username;
}

在common模块创建接口UserService

public interface UserService {public User getUser(String uid);
}

Provider

1.pom中添加依赖

        <dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter</artifactId></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><optional>true</optional></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-spring-boot-starter</artifactId><version>3.0.7</version></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-rpc-dubbo</artifactId><version>3.0.7</version></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-registry-zookeeper</artifactId><version>3.0.7</version></dependency><dependency><groupId>com.hejiawang</groupId><artifactId>common</artifactId><version>0.0.1-SNAPSHOT</version><scope>compile</scope></dependency>

2.添加UserServiceImpl

使用@DubboService并且指定版本

@DubboService(version = "1.0")
public class UserServiceImpl implements UserService {public User getUser(String uid){User hejiawang = new User(uid,"hejiawang");return hejiawang;}
}

3.添加UserServiceImpl2

使用@DubboService并且指定版本

@DubboService(version = "2.0")
public class UserServiceImpl2 implements UserService {public User getUser(String uid){User hejiawang = new User(uid,"hejiawang");return hejiawang;}
}

4.在启动类中添加@EnableDubbo

@SpringBootApplication
@EnableDubbo
public class ConsumerApplication {public static void main(String[] args) {SpringApplication.run(ConsumerApplication.class, args);}}

Consumer

1.pom中添加依赖

		<dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-spring-boot-starter</artifactId><version>3.0.7</version></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-rpc-dubbo</artifactId><version>3.0.7</version></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-registry-zookeeper</artifactId><version>3.0.7</version></dependency><dependency><groupId>com.hejiawang</groupId><artifactId>common</artifactId><version>0.0.1-SNAPSHOT</version><scope>compile</scope></dependency>

2.添加OrderService

OrderService

@Service
public class OrderService {@DubboReference(version = "1.0")private UserService userService;public User getOrderService(String uid){return userService.getUser(uid);}
}

3.添加OrderController

OrderController

@RestController
public class OrderController {@AutowiredOrderService orderService;@GetMapping("/user/{uid}")public User getUser(@PathVariable("uid") String uid) {return orderService.getOrderService(uid);}
}

4.启动类添加@EnableDubbo

@SpringBootApplication
@EnableDubbo
public class ConsumerApplication {public static void main(String[] args) {SpringApplication.run(ConsumerApplication.class, args);}}

测试

1.启动本地zk

2.启动provider，consumer

3.调用consumer服务的controller

localhost:8081/user/123

通过dubbo返回结果

4.通过zkweb查看provider UserService有2个版本并且1.0版本有消费者