dubbo 使用示例
dubbo 使用示例
相关依赖
org.apache.dubbo
dubbo-spring-boot-starter
3.0.5
org.apache.curator
curator-recipes
5.2.0
org.apache.curator
curator-x-discovery
5.2.0
provider
application.yml
dubbo:
application:
name: dubbo-provider
register-mode: instance
registry:
address: zookeeper://localhost:2181
group: dubbo4
#register-mode: instance
protocol:
name: dubbo
port: 20880
HelloService
public interface HelloService {
String hello();
}
HelloService2
public interface HelloService2 {
String hello2();
}
HelloServiceImpl
@DubboService //使用注解@DubboService暴露服务
public class HelloServiceImpl implements HelloService {
@Override
public String hello() {
System.out.println("hello provider");
return "hello provider";
}
}
HelloService2Impl
@DubboService //使用注解@DubboService暴露服务
public class HelloService2Impl implements HelloService2 {
@Override
public String hello2() {
System.out.println("hello provider2");
return "hello provider2";
}
}
DemoApplication：项目启动类添加注解@EnableDubbo
@EnableDubbo //扫描本包及子包，处理@DubboService注解（服务暴露）
@SpringBootApplication
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
}
conusmer
application.yml
dubbo:
application:
name: dubbo-consumer
register-mode: instance
registry:
address: zookeeper://localhost:2181
group: dubbo4
protocol:
name: dubbo
port: 20880
server:
port: 8081
HelloService
public interface HelloService {
String hello();
}
HelloService2
public interface HelloService2 {
String hello2();
}
HelloController
@RestController
public class HelloController {
@DubboReference //引用远程服务
private HelloService helloService;
@DubboReference //引用远程服务
private HelloService2 helloService2;
@RequestMapping("/hello")
public String hello(){
System.out.println(helloService.hello());
System.out.println(helloService2.hello2());
return "hello consumer 2";
}
}
DemoApplication：项目启动类，添加@EnableDubbo注解
@EnableDubbo //扫描本包及子包，处理@DubboReference注解（远程服务注入）
@SpringBootApplication
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
}
使用测试
zookeeper注册中心
localhost:8080/hello，控制台输出：
2022-01-28 14:43:08.545 INFO 1515 --- [ main] com.example.demo.DemoApplication : Started DemoApplication in 2.82 seconds (JVM running for 8.366)
2022-01-28 14:48:12.824 INFO 1515 --- [nio-8081-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring DispatcherServlet 'dispatcherServlet'
2022-01-28 14:48:12.824 INFO 1515 --- [nio-8081-exec-1] o.s.web.servlet.DispatcherServlet : Initializing Servlet 'dispatcherServlet'
2022-01-28 14:48:12.825 INFO 1515 --- [nio-8081-exec-1] o.s.web.servlet.DispatcherServlet : Completed initialization in 1 ms
hello provider
hello provider2
消费端成功调用远程服务