Dubbo：Nacos作为注册中心-蒲公英云

Dubbo：Nacos作为注册中心

前言

本文介绍如何通过Nacos作为配置中心，实现Dubbo服务的注册与消费

以HelloService服务为例

public interface HelloService { 
    String sayHello(String name);
}

服务提供方和消费方都引入以下jar

<dependencys>
    <!-- Spring Boot dependencies -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter</artifactId>
    </dependency>
    <dependency>
        <groupId>org.apache.dubbo</groupId>
        <artifactId>dubbo-spring-boot-starter</artifactId>
    </dependency>
    <!-- Dubbo -->
    <dependency>
        <groupId>org.apache.dubbo</groupId>
        <artifactId>dubbo</artifactId>
    </dependency>
    <!-- Dubbo Registry Nacos -->
    <dependency>
        <groupId>org.apache.dubbo</groupId>
        <artifactId>dubbo-registry-nacos</artifactId>
    </dependency>
    <dependency>
        <groupId>com.alibaba.nacos</groupId>
        <artifactId>nacos-client</artifactId>
    </dependency>
</dependencys>

需要搭建一个Nacos服务，这里直接使用程序员DD提供的公益性的Nacos服务，
详细地址

服务提供方

实现接口

@Service(version = “${dubbo.service.version}”)
public class HelloServiceImpl implements HelloService {

@Value("${spring.application.name}")
private String serviceName;
public String sayHello(String name) { 
    return String.format("[%s] : Hello , %s", serviceName, name);
}

}

配置服务

spring.application.name = nacos-dubbo-provider

dubbo.scan.base-packages= com.github.ly641921791.dubbo.example.nacos.provider.service

dubbo.protocol.name = dubbo
dubbo.protocol.port = -1

dubbo.registry.address = nacos://127.0.0.1:8848
dubbo.registry.address = nacos://nacos.didispace.com:80

dubbo.service.version = 1.0.0

引导程序

@SpringBootApplication
public class NacosProviderApplication {

public static void main(String[] args) { 
    SpringApplication.run(NacosProviderApplication.class, args);
}

}

启动应用

启动后在Nacos控制台发现应用注册成功，服务名为providers:com.github.ly641921791.dubbo.example.common.service.HelloService:1.0.0

服务消费方

配置服务

spring.application.name = nacos-dubbo-consumer

dubbo.registry.address = nacos://127.0.0.1:8848
dubbo.registry.address = nacos://nacos.didispace.com:80

dubbo.service.version = 1.0.0

引导程序 & 服务消费

@SpringBootApplication
public class NacosConsumerApplication {

@Reference(version = "${dubbo.service.version}")
private HelloService helloService;
public static void main(String[] args) { 
    SpringApplication.run(NacosConsumerApplication.class, args).close();
}
@Bean
public ApplicationRunner runner() { 
    return new ApplicationRunner() { 
        public void run(ApplicationArguments args) throws Exception { 
            System.out.println(helloService.sayHello("consumer"));
        }
    };
}