dubbo官方Demo，dubbo的基本特性可以看用户指南，dubbo的概念可以看用户指南的第一章入门即可，我就不转述了，想要在dubbo基础上扩展的可以看开发指南。建议可以先尝试自己根据官方去搭一下，出问题了可以再对比一下本文章代码找出问题，成功了就可以省略代码部分阅览了。
文档所属项目是dubbo-spring-boot-parent,由于0.2.x版本还没正式release,所以该demo用的依旧是0.1.0的依赖，但还未发现与Spring boot 2.0的版本继承有问题。
dubbo-service-demo模块存服务接口与POJO:
package per.dubbo.demo.postgres.service; import per.dubbo.demo.postgres.model.Student; import com.baomidou.mybatisplus.service.IService; /** * @author Wilson * @since 2018-05-25 */ public interface StudentService extends IService<Student> { }
dubbo-provider-demo存放服务、DAO与dubbo配置资源文件properties.yml(@Service需用dubbo的)：
StudentServiceImpl:
package per.dubbo.demo.postgres.service.impl; import com.alibaba.dubbo.config.annotation.Service; import com.baomidou.mybatisplus.service.impl.ServiceImpl; import per.dubbo.demo.postgres.dao.StudentDAO; import per.dubbo.demo.postgres.model.Student; import per.dubbo.demo.postgres.service.StudentService; import javax.annotation.Resource; /** * @author Wilson * @since 2018-05-25 */ @Service public class StudentServiceImpl extends ServiceImpl<StudentDAO, Student> implements StudentService { @Resource private StudentDAO studentDAO; }
dubbo-provider-demo模块下的application.xml：
server: port: 8081 spring: application: name: provider-demo dubbo: scan: base-packages: per.dubbo.demo.postgres.service.impl application: name: dubbo-provider-demo id: dubbo-provider-demo protocol: id: dubbo name: dubbo port: 33333 registry: address: multicast://224.5.6.7:1234 check: false
启动进程ProviderApplicationDemo（@EnableDubbo同@DubboComponentScan与@EnableDubboConfig,虽然application.yml已配置了扫描包但实际启动却没有起效，大概是我使用的spring boot版本是2.0但dubbo-spring-boot是0.1.x的原因，所以要加@EnableDubbo才能起效）:
package per.dubbo.demo.postgres; import com.alibaba.dubbo.config.spring.context.annotation.EnableDubbo; import io.swagger.annotations.Api; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; /** * ProviderApplicationDemo * * @author Wilson * @date 18-4-12 */ @Api("ProviderApplicationDemo") @EnableDubbo @SpringBootApplication public class ProviderApplicationDemo { public static void main(String[] args) { SpringApplication.run(ProviderApplicationDemo.class); } }
dubbo-consumer-demo存放controller：
package per.dubbo.demo.controller.impl; import com.alibaba.dubbo.config.annotation.Reference; import org.springframework.web.bind.annotation.RestController; import per.dubbo.demo.common.ServerResponse; import per.dubbo.demo.controller.UserBaseController; import per.dubbo.demo.postgres.service.StudentService; import reactor.core.publisher.Mono; /** * UserBaseControllerImpl * * @author Wilson * @date 18-5-25 */ @RestController public class UserBaseControllerImpl implements UserBaseController { @Reference private StudentService studentService; @Override public Mono<ServerResponse> login(String username, String password) { return Mono.just(ServerResponse.ok()); } @Override public Mono<ServerResponse> list() { return Mono.just(ServerResponse.ok(studentService.selectList(null))); } }
启动程序ConsumerDemoApplication（@PostConstruct在这只是用来判断有没有成功发现服务）:
package per.dubbo.demo; import com.alibaba.dubbo.config.annotation.Reference; import com.alibaba.dubbo.config.spring.context.annotation.DubboComponentScan; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import per.dubbo.demo.postgres.service.StudentService; import javax.annotation.PostConstruct; /** * ConsumerDemoApplication * * @author Wilson * @date 18-5-15 */ @SpringBootApplication @DubboComponentScan public class ConsumerDemoApplication { @Reference private StudentService studentService; @PostConstruct public void init() { System.err.println("studentService:" + studentService); } public static void main(String[] args) { SpringApplication.run(ConsumerDemoApplication.class); } }
consumer配置文件application.yml:
spring: application: name: dubbo-consumer-demo server: port: 7979 dubbo: consumer: check: false application: id: dubbo-consumer name: dubbo-consumer protocol: id: consumer name: consumer port: 33333 registry: address: multicast://224.5.6.7:1234 check: false scan: base-packages: per.dubbo.demo.controller
项目起跑时都可以看到控制台输出application.yml的dubbo配置信息，如下图:
