nacos+Dubbo整合快速入门

官网：Nacos Spring Boot 快速开始

1. 下载下载链接
2. 启动：进入bin目录，startup.cmd -m standalone
3. 引入依赖

    <dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo</artifactId><version>3.0.9</version></dependency><dependency><groupId>com.alibaba.nacos</groupId><artifactId>nacos-client</artifactId><version>2.1.0</version></dependency>

4.配置application.yml 

dubbo:application:name: dubbo-springboot-demo-providerprotocol:name: dubboport: -1registry:id: nacos-registryaddress: nacos://localhost:8848

5. 提供者：provider包下创建service服务

public interface DemoService {String sayHello(String name);String sayHello2(String name);default CompletableFuture<String> sayHelloAsync(String name) {return CompletableFuture.completedFuture(sayHello(name));}}@DubboService
public class DemoServiceImpl implements DemoService {@Overridepublic String sayHello(String name) {System.out.println("Hello " + name + ", request from consumer: " + RpcContext.getContext().getRemoteAddress());return "Hello " + name;}@Overridepublic String sayHello2(String name) {return "mumu";}}

6.消费者：创建service，需要用到demoservice

package org.mumu.project.provider;import java.util.concurrent.CompletableFuture;public interface DemoService {String sayHello(String name);String sayHello2(String name);default CompletableFuture<String> sayHelloAsync(String name) {return CompletableFuture.completedFuture(sayHello(name));}}

 7.消费者方调用远程服务

@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class,DataSourceTransactionManagerAutoConfiguration.class,HibernateJpaAutoConfiguration.class})
@EnableDubbo
public class ApiGatewayApplication {@DubboReferenceprivate DemoService demoService;public static void main(String[] args) {ConfigurableApplicationContext context = SpringApplication.run(ApiGatewayApplication.class, args);ApiGatewayApplication application = context.getBean(ApiGatewayApplication.class);String result = application.doSayHello("world");String result2 = application.doSayHello2("world");System.out.println("result: " + result);System.out.println("result: " + result2);}public String doSayHello(String name) {return demoService.sayHello(name);}public String doSayHello2(String name) {return demoService.sayHello2(name);}
}

报错：Failed to check the status of the service org.mumu.apigateway.project.provider.DemoService. No provider available for the service org.mumu.apigateway.project.provider.DemoService from the url

需要注意的是：服务提供方和调用方需要包名一致

http://localhost:8848/nacos/index.html  nacos中心