服务注册发现 服务注册发现步骤：1、开启zookeeper服务2、提供者导入依赖配置注册中心的地址，服务发现名，要扫描的包在想要注册的服务类上增加（Dubbo包下的）@Service注解3、消费者导入依赖配置注册中心地址，服务名从远程注入服务（Dubbo包下的）@Reference注解1、开启zookeeper服务（以windows环境为例）2、通过maven命令打包dubbo，或者在github下载源码导入idea打包通过cmd命令java -jar dubbo-admin-0.0.1-SNAPSHOT.jar启动dubbo3、服务者Demo导入依赖（服务者和消费者需要的依赖一样）<!--Dubbo--> <dependency> <groupId>org.apache.dubbo</groupId> <artifactId>dubbo-spring-boot-starter</artifactId> <version>2.7.3</version> </dependency> <!--zkClient--> <dependency> <groupId>com.github.sgroschupf</groupId> <artifactId>zkclient</artifactId> <version>0.1</version> </dependency> <!--引入zookeeper--> <dependency> <groupId>org.apache.curator</groupId> <artifactId>curator-framework</artifactId> <version>2.12.0</version> </dependency> <dependency> <groupId>org.apache.curator</groupId> <artifactId>curator-recipes</artifactId> <version>2.12.0</version> </dependency> <dependency> <groupId>org.apache.zookeeper</groupId> <artifactId>zookeeper</artifactId> <version>3.4.14</version> <!--排除slf4j-log4j12--> <exclusions> <exclusion> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> </exclusion> </exclusions> </dependency>application.yml配置（服务者）server: port: 8088 dubbo: application: name: provider-server registry: address: zookeeper://127.0.0.1:2181 scan: base-packages: com.sw.service Servicepackage com.sw.service; /** * @Author suaxi * @Date 2020/12/27 11:57 */ public interface TicketService { public String getTicket(); } package com.sw.service; import org.apache.dubbo.config.annotation.Service; import org.springframework.stereotype.Component; /** * @Author suaxi * @Date 2020/12/27 11:58 * zookeeper:服务注册与发现 */ @Service //Dubbo @Service注解可以被扫描到，项目一启动，服务就自动注册到注册中心 @Component //使用Dubbo后尽量用Component注解，Spring的Service注解导包时容易搞混 public class TicketServiceImpl implements TicketService{ @Override public String getTicket() { return "获得票一张！"; } } 4、消费者Demo导入pom.xml的依赖与服务者一样application.yml配置（消费者）server: port: 8089 dubbo: application: name: consumer-server registry: address: zookeeper://127.0.0.1:2181Servicepackage com.sw.service; /** * @Author suaxi * @Date 2020/12/27 11:57 */ public interface TicketService { public String getTicket(); } package com.sw.service; import org.apache.dubbo.config.annotation.Reference; import org.springframework.stereotype.Service; /** * @Author suaxi * @Date 2020/12/27 12:07 */ @Service //放到Spring容器中 public class UserService { //想要拿到provider-server的票，需要到注册中心拿 @Reference //引用，pom坐标，可以定义路径相同的接口名 TicketService ticketService; public void buyTicket(){ String ticket = ticketService.getTicket(); System.out.println("在注册中心拿到===>"+ticket); } } Junit测试类package com.sw; import com.sw.service.UserService; import org.junit.jupiter.api.Test; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; @SpringBootTest class ConsumerServerApplicationTests { @Autowired private UserService userService; @Test public void consumerTest() { userService.buyTicket(); } } 5、Dubbo前端管理页面通过localhost:7001可以进入dubbo的管理员页面，账号密码都是root