Dubbo基本是一个版本一个配置方式,2.6.x的时候是一种,2.7.x的时候是另一种,我这里使用的是Spring5.3.9+Dubbo2.7.13+zookeeper3.6.3来配置的,官网写的也是不清不楚,看不太懂
Dubbo官网
这里采用的是配置文件的方式配置,注解配置打算留着springboot再慢慢来尝试

服务提供者

(即service的实现类配置方式),同时要在实现类上添加@DubboService,@Service,@Transactional

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:dubbo="http://dubbo.apache.org/schema/dubbo"
  xmlns:context="http://www.springframework.org/schema/context"
  xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd   http://dubbo.apache.org/schema/dubbo http://dubbo.apache.org/schema/dubbo/dubbo.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
  <!-- 指定应用名称 -->
  <dubbo:application name="service"/>
  <!--指定暴露服务的端口，如果不指定默认为20880-->
  <dubbo:protocol name="dubbo" port="20880"/>
  <!--指定服务注册中心地址-->
  <dubbo:registry address="zookeeper://zookeeper主机Ip地址:2181"/>
  <!--批量扫描，发布服务-->
  <dubbo:annotation package="com.ipisces42"/>
  <context:component-scan base-package="com.ipisces42.service.impl"/>
  <import resource="classpath:applicationContext-tx.xml"/>
</beans>

消费者

需要在Controller层添加@DubboReference

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:mvc="http://www.springframework.org/schema/mvc"
  xmlns:context="http://www.springframework.org/schema/context"
  xmlns:dubbo="http://dubbo.apache.org/schema/dubbo"
  xsi:schemaLocation="http://www.springframework.org/schema/beans
                  http://www.springframework.org/schema/beans/spring-beans.xsd
                  http://www.springframework.org/schema/mvc
                  http://www.springframework.org/schema/mvc/spring-mvc.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd  http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd http://dubbo.apache.org/schema/dubbo http://dubbo.apache.org/schema/dubbo/dubbo.xsd">
  <mvc:annotation-driven>
    <mvc:message-converters>
      <!--不需要视图解析器，项目中的所有的请求都返回json数据结构-->
      <bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
        <property name="supportedMediaTypes" value="application/json"/>
        <property name="features">
          <list>
            <!--Map类型格式化，接收参数允许空值
            User{name, age} => new User('zhangsan') => user{username: 'zhangsan'}
            WriteMapNullValue
            User{name, age} => new User('zhangsan') => user{username: 'zhangsan',age:null}
            -->
            <value>WriteMapNullValue</value>
            <!--日期类型格式化  数值16..... 毫秒级的时间戳
            WriteDateUseDateFormat yyyy-MM-dd hh:mm:ss
            -->
            <value>WriteDateUseDateFormat</value>
          </list>
        </property>
      </bean>
    </mvc:message-converters>
  </mvc:annotation-driven>
  <!-- 指定应用名称 -->
  <dubbo:application name="web"/>
  <!--指定服务注册中心地址-->
  <dubbo:registry address="zookeeper://localhost:2181"/>
  <!--批量扫描 dubbo2.6.0下，mvc不需要再扫controller
      2.6.2 则mvc要扫一次controller
  <context:component-scan/>
  -->

  <dubbo:annotation package="com.ipisces42" />
  <!--
      超时全局设置 10分钟
      check=false 不检查服务提供方，开发阶段建议设置为false
      check=true 启动时检查服务提供方，如果服务提供方没有启动则报错
  -->
  <context:component-scan base-package="com.ipisces42.controller" />
  <!--文件上传组件-->
  <bean id="multipartResolver"
    class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
    <property name="maxUploadSize" value="104857600"/>
    <property name="maxInMemorySize" value="4096"/>
    <property name="defaultEncoding" value="UTF-8"/>
  </bean>
</beans>

Q.E.D.