首先一定确保zookeeper正常工作

公共接口模块

为了简化代码，可以把需要其他服务调用的接口，抽取为公共接口模块dubbo-common-service，

public interface TestService {
    public String clientTest();
}

服务提供方

导入dubbo、zookeeper依赖

        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>3.0.5</version>
        </dependency>
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-framework</artifactId>
            <version>5.2.0</version>
        </dependency>
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-recipes</artifactId>
            <version>5.2.0</version>
        </dependency>
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-x-discovery</artifactId>
            <version>5.2.0</version>
        </dependency>
		<!--自己建立的公共接口包-->
        <dependency>
            <groupId>com.psh</groupId>
            <artifactId>dubbo-common-service</artifactId>
            <version>1.0</version>
        </dependency>

配置文件为：

server:
  port: 6610 #端口
dubbo:
  application:
    name: dubbo-client #别名
  registry:
    address: zookeeper://192.168.158.159:2181  #zookeeper 地址 + 端口
    timeout: 230000  # 如果zookeeper是放在远程服务器上超时时间请设置长一些，不然很容易超时连接失败
  protocol:
    port: 20881  # 不同服务使用不同端口，不然会报错
    name: dubbo

提供方实现接口并暴露服务，在接口实现类增加@DubboService

@DubboService
public class ClientServiceImpl implements TestService {
    @Override
    public String clientTest() {
        return "远程调用成功";
    }
}

启动类加上@EnableDubbo

@EnableDubbo
@SpringBootApplication
public class DubboApplicationClient {
    public static void main(String[] args) {
        SpringApplication.run(DubboApplicationClient.class);
    }
}

接口调用方

        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>3.0.5</version>
        </dependency>
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-framework</artifactId>
            <version>5.2.0</version>
        </dependency>
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-recipes</artifactId>
            <version>5.2.0</version>
        </dependency>
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-x-discovery</artifactId>
            <version>5.2.0</version>
        </dependency>
        <dependency>
            <groupId>com.psh</groupId>
            <artifactId>dubbo-common-service</artifactId>
            <version>1.0</version>
        </dependency>

server:
  port: 6620


dubbo:
  application:
    name: dubbo-client #别名
  registry:
    address: zookeeper://192.168.158.159:2181  #zookeeper 地址 + 端口
    timeout: 230000  # 如果zookeeper是放在远程服务器上超时时间请设置长一些，不然很容易超时连接失败
  protocol:
    port: 20882  # 不同服务使用不同端口，不然会报错
    name: dubbo

启动类

@EnableDubbo
@SpringBootApplication
public class DubboApplicationServer {
    public static void main(String[] args) {
        SpringApplication.run(DubboApplicationServer.class);
    }
}

controller接口

@RestController
public class DubooServerApplication {


    @Autowired
    private ServerService serverService;

    @GetMapping("/test")
    public String test(String name){
        return serverService.serverTest(name);
    }

}

通过本服务的Service 来远程调用接口

public interface ServerService {

    public String serverTest(String name) ;
}

@Service
public class ServerServiceImpl implements ServerService {

    @DubboReference
    private TestService testService;


    public String serverTest(String name) {
        return "返回结果为："+testService.clientTest()+"，参数为："+name;
    }


}

访问controller接口，得到：

远程调用成功