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踩了太多坑，官网中文参考地址：http://dubbo.apache.org/zh-cn/index.html

话不多说，直接怼代码

dubbo 2.7.x 的 boot starter写法如下

依赖：

<dubbo.version>2.7.1</dubbo.version><!-- —————————————————— dubbo-starter BEGIN —————————————————————————— -->
<dependency><groupId>org.apache.commons</groupId><artifactId>commons-lang3</artifactId>
</dependency>
<dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo</artifactId><version>${dubbo.version}</version>
</dependency>
<dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-dependencies-zookeeper</artifactId><version>${dubbo.version}</version><type>pom</type>
</dependency>
<!-- —————————————————— dubbo-starter END —————————————————————————— -->

服务privider:

---------------------- provider ----------------------provider-yaml:dubbo:#  registry: # 单注册中心,注意属性级别:dubbo.registry,如果有@Service(registry = {"registry1","registry2","registry3"}),则删除#    register: false # true(默认), false:表示服务不注册到注册中心(只订阅,直连服务正常),且dubbo-admin不显示#    address: zookeeper://127.0.0.1:2181registries: # 多注册中心,注意属性级别:dubbo.registries, 不同的方法可以用@Service(registry = {"registry2"}),指定不同的注册中心provider1:register: true #默认,false:表示服务不注册到注册中心address: zookeeper://a.a.a.a:2181provider2:address: zookeeper://b.b.b.b:2181provider3:address: zookeeper://c.c.c.c:2181application:name: myProvider#    qos-enable: true # 默认值 true, 是否允许在线运维, 配置和查询服务#    qos-port: 22222 # 默认值2222#    qos-accept-foreign-ip: false # 默认false , 不允许远程访问 telnetscan:base-packages: com.cmb.service.dubboprotocol:name: dubboport: 28080provider:retries: 0        # 服务提供者无需重试timeout: 6000     # 默认只有1sprovider-bean:bean1注解:@Service(group = "project1", version = "1.0.0", registry = {"provider1", "provider3"}public class DubboPrintServiceImpl implements DubboPrintService{...}bean2注解:@Service(group = "project2", version = "2.0.0", registry = {"provider3"})public class DubboPrintService2Impl implements DubboPrintService{...}---------------------- provider ----------------------

消费者 comsumer:

---------------------- consumer ----------------------consumer-yaml:dubbo:#  registry: # 单注册中心,注意属性级别:dubbo.registry#    register: false # true(默认), false:表示服务不注册到注册中心(只订阅,直连服务正常),且dubbo-admin不显示#    address: zookeeper://127.0.0.1:2181registries: # 多注册中心consumer1:register: true #默认,false:表示服务不注册到注册中心address: zookeeper://a.a.a.a:2181consumer2:address: zookeeper://b.b.b.b:2181consumer3:address: zookeeper://c.c.c.c:2181application:name: myConsumerscan:base-packages: com.cmb.controllerconsumer:timeout: 3000check: true   # 服务启动时候检查是否可用retries: 2    # 服务重试次数consumer-bean:下面的Bean注入后,直接使用@Reference(group = "project1", version = "1.0.0", registry = {"consumer1", "consumer3"})private DubboPrintService printService1;@Reference(group = "project2", version = "2.0.0", registry = {"consumer2"})private DubboPrintService printService2;---------------------- consumer ----------------------