Dubbo（九）之注解配置

雨点打透心脏的1/2处 2022-10-25 13:00 103阅读 0赞

转载自  [Dubbo注解配置][Dubbo]

以注解配置的方式来配置你的 Dubbo 应用

提示

需要 `2.6.3` 及以上版本支持。 点此查看 [完整示例][Link 1]

## 服务提供方 ##

### `Service`注解暴露服务 ###

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

### 增加应用共享配置 ###

# 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

### 指定Spring扫描路径 ###

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

## 服务消费方 ##

### `Reference`注解引用服务 ###

@Component("annotationAction")
    public class AnnotationAction {
    
        @Reference
        private AnnotationService annotationService;
        
        public String doSayHello(String name) {
            return annotationService.sayHello(name);
        }
    }

### 增加应用共享配置 ###

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

### 指定Spring扫描路径 ###

@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 {
    
    }

### 调用服务 ###

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");
    }

[Dubbo]: https://dubbo.apache.org/zh/docs/v2.7/user/configuration/annotation/
[Link 1]: https://github.com/apache/dubbo-samples/tree/master/dubbo-samples-annotation