• 【转】 SpringCloudAlibaba之远程调用Dubbo实战


    【转】 SpringCloudAlibaba之远程调用Dubbo实战

    SpringCloudAlibaba微服务实战教程系列  

    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);
    }
    View 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

    更多:Dubbo与Zookeeper

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  • 原文地址:https://www.cnblogs.com/Javastudy-note/p/13818385.html
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