【转】 SpringCloudAlibaba之远程调用Dubbo实战
注意:以下实战是Dubbo以Nacos为注册中心的使用方式
一、Dubbo提取api模块
package city.albert.email; /** * @author niunafei * @function * @email niunafei0315@163.com * @date 2020/10/9 12:22 PM */ public interface EmailCodeService { /** * * @param email * @param code * @return */ Boolean email(String email, String code); }
模块pom的依赖如下:
<dependency> <groupId>city.albert</groupId> <artifactId>dubbo-api</artifactId> <version>1.0-SNAPSHOT</version> </dependency>
二、服务提供者
1、引入pom文件依赖
注意:我的版本号是同父pom统一管理,一定注意版本兼容的问题
<!--接口依赖包--> <dependency> <groupId>city.albert</groupId> <artifactId>dubbo-api</artifactId> <version>1.0-SNAPSHOT</version> </dependency> <!--dubbo依赖包--> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-starter-dubbo</artifactId> </dependency> <dependency> <groupId>com.alibaba.csp</groupId> <artifactId>sentinel-apache-dubbo-adapter</artifactId> </dependency>
2、配置配置文件application.yml或者bootstrap.yml
spring:
cloud:
nacos:
#指定注册中心需要引入spring-cloud-starter-alibaba-nacos-discovery依赖哦!本章不是注册nacos重点不做解释
discovery:
server-addr: 127.0.0.1:8848
application:
name: service-email8082
main:
allow-bean-definition-overriding: true
dubbo:
#dubbo扫描dubbo注解报名
scan:
base-packages: city.albert
protocol:
# dubbo 协议
name: dubbo
# dubbo 协议端⼝( -1 表示⾃增端⼝,从 20880 开始)
port: -1
cloud:
# 订阅服务提供⽅的应⽤列表,订阅多个服务提供者使⽤ "," 连接
subscribed-services: service-code8081
registry:
#注册到springcloud服务
address: spring-cloud://localhost
3、实现接口
使用org.apache.dubbo.config.annotation包下的@Service注解声明dubbo接口实现类
package city.albert; import city.albert.email.EmailCodeService; import org.apache.dubbo.config.annotation.Service; /** * @author niunafei * @function * @email niunafei0315@163.com * @date 2020/10/9 12:23 PM */ @Service public class EmailCodeServiceImpl implements EmailCodeService { @Override public Boolean email(String email, String code) { System.out.println("发送邮件"); return true; } }
三、服务消费者
1、引入pom文件依赖
注意:我的版本号是同父pom统一管理,一定注意版本兼容的问题
<!--接口依赖包--> <dependency> <groupId>city.albert</groupId> <artifactId>dubbo-api</artifactId> <version>1.0-SNAPSHOT</version> </dependency> <!--dubbo依赖包--> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-starter-dubbo</artifactId> </dependency> <dependency> <groupId>com.alibaba.csp</groupId> <artifactId>sentinel-apache-dubbo-adapter</artifactId> </dependency>
2、配置配置文件application.yml或者bootstrap.yml
spring:
cloud:
nacos:
#指定注册中心需要引入spring-cloud-starter-alibaba-nacos-discovery依赖哦!本章不是注册nacos重点不做解
discovery:
server-addr: 127.0.0.1:8848
application:
name: service-code8081
main:
allow-bean-definition-overriding: true
dubbo:
#dubbo扫描dubbo注解报名
scan:
base-packages: city.albert
protocol:
# dubbo 协议
name: dubbo
# dubbo 协议端⼝( -1 表示⾃增端⼝,从 20880 开始)
port: -1
cloud:
# 订阅服务提供⽅的应⽤列表,订阅多个服务提供者使⽤ "," 连接
subscribed-services: service-email8082
registry:
#注册到springcloud服务
address: spring-cloud://localhost
3、实现接口
使用org.apache.dubbo.config.annotation包下的@Reference注入调用dubbo接口实现类
@Reference
EmailCodeService emailClient;
四、启动两个项目
观察nacos注册中心是否存在服务,存在则进行调用测试即可