Annotation Configuration

Configure Dubbo with annotation

Requires2.6.3 or higher, click here to view the complete sample

Provider Side

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@DubboService annotation for exporting

@DubboService
public class AnnotationServiceImpl implements AnnotationService {
    @Override
    public String sayHello(String name) {
        return "annotation: hello, " + name;
    }
}

Add application sharing configuration

# dubbo-provider.properties
dubbo.application.name=annotation-provider
dubbo.registry.address=zookeeper://127.0.0.1:2181
dubbo.protocol.name=dubbo
dubbo.protocol.port=20880

Spring scan path

@Configuration
@EnableDubbo(scanBasePackages = "org.apache.dubbo.samples.simple.annotation.impl")
@PropertySource("classpath:/spring/dubbo-provider.properties")
static public class ProviderConfiguration {
       
}

Consumer Side

@Reference annotation for reference

@Component("annotationAction")
public class AnnotationAction {

    @Reference
    private AnnotationService annotationService;
    
    public String doSayHello(String name) {
        return annotationService.sayHello(name);
    }
}

Add application sharing configuration

# dubbo-consumer.properties
dubbo.application.name=annotation-consumer
dubbo.registry.address=zookeeper://127.0.0.1:2181
dubbo.consumer.timeout=3000

Spring scan path

@Configuration
@EnableDubbo(scanBasePackages = "org.apache.dubbo.samples.simple.annotation.action")
@PropertySource("classpath:/spring/dubbo-consumer.properties")
@ComponentScan(value = {"org.apache.dubbo.samples.simple.annotation.action"})
static public class ConsumerConfiguration {

}

Invoke service

public static void main(String[] args) throws Exception {
    AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(ConsumerConfiguration.class);
    context.start();
    final AnnotationAction annotationAction = (AnnotationAction) context.getBean("annotationAction");
    String hello = annotationAction.doSayHello("world");
}