dubbo结合springboot使用教程（D）

简介

官方文档：

Dubbo SDK 用户手册 | Apache Dubbo

实践

服务端：

1. 定义服务端接口

   public interface LotteryDrawApi{
   
       RpcResult<String> draw(DrawReq req);
   }
   

2. 服务端接口实现

   1. 引入dubbo-spring-boot-starter依赖

      <dependency>
          <groupId>org.apache.dubbo</groupId>
          <artifactId>dubbo-spring-boot-starter</artifactId>
          <version>3.1.11</version>
      </dependency>
      

   2. 引入注册中心zookeeper依赖

      <dependency>
          <groupId>org.apache.dubbo</groupId>
          <artifactId>dubbo-registry-zookeeper</artifactId>
          <version>3.1.11</version>
      </dependency>
      

   3. 实现接口。
      1. 使用@DubboService注解标志这是个dubbo服务

       @DubboService
       public class LotteryDrawApiImpl implements LotteryDrawApi {
   
             public LotteryDrawApiImpl() {
                 System.out.println("====> dubbo服务端启动成功");
             }
   
             @Override
             public RpcResult<String> draw(DrawReq req) {
                 System.out.println("生产者调用成功！");
                 return RpcResult.success("抽奖成功，中500万！！！");
             }
       }  
   

   4. 添加spring-dubbo配置
      1. 参数：
         1. scan：指定dubbo服务接口包（spring会去处理该包下带Dubbo标签的类）
         2. protocol.port：指定dubbo服务网络端口
         3. registry：注册中心配置，这里使用的zookeeper，具体zookeeper使用见下一篇章

      dubbo:
        scan:
          base-packages: com.daiyi.lottery.application
        application:
          name: dubbo-springboot-demo-provider
        protocol:
          name: dubbo
          port: 30888
        registry:
          address: zookeeper://zookeeper-server.com:2181
          timeout: 5000
      

3. 启动springboot服务

   

   启动服务端成功！

客户端：

1. 引入dubbo服务端服务

   <dependency>
       <groupId>com.daiyi</groupId>
       <artifactId>lottery-rpc</artifactId>
       <version>1.0-SNAPSHOT</version>
   </dependency>
   

2. 和服务端一样引入dubbo框架和注册中心框架

   <dependency>
       <groupId>org.apache.dubbo</groupId>
       <artifactId>dubbo-spring-boot-starter</artifactId>
       <version>3.1.11</version>
   </dependency>
   
   <dependency>
       <groupId>org.apache.dubbo</groupId>
       <artifactId>dubbo-registry-zookeeper</artifactId>
       <version>3.1.11</version>
   </dependency>
   

3. 添加spring-dubbo配置

   dubbo:
   scan:
     base-packages: com.daiyi.lottery.application
   application:
     name: dubbo-springboot-demo-consumer
   protocol:
     name: dubbo
     port: 30889
   registry:
     address: zookeeper://zookeeper-server.com:2181
     timeout: 5000
   

4. 编写客户端进行调用

   1. @DubboReference注解表示引用一个dubbo服务

   @Service
   public class DubboClient {
   
      @DubboReference
      private LotteryDrawApi lotteryDrawApi;
   
      public void draw(){
          System.out.println(lotteryDrawApi.draw(null).getEntity());
      }
   
   }
   

5. 启动客户端进行调用

   @SpringBootApplication
   public class DemoApplication {
       public static void main(String[] args) {
           ConfigurableApplicationContext context = SpringApplication.run(DemoApplication.class);
           DubboClient dubboClient = context.getBean(DubboClient.class);
           dubboClient.draw();
       }
   }
   

   调用成功 ====>