springboot如何通过apollo动态去注册dubbo服务

参考相关文章：

 apollo官方文档：  https://dubbo.apache.org/zh/docs/v2.7/user/configuration/configuration-load-process/

 Dubbo注解方式与spring的整合原理即@DubboService的机制：   https://blog.csdn.net/leisurelen/article/details/107019516

第一步：apollo配置：

spring.application.name = csc-mbhk-loyalty-member
dubbo.scan.base-packages = com.aswatson.csc.member.service
dubbo.registry.protocol = zookeeper
dubbo.registry.address = 127.0.0.1:2181
dubbo.protocol.name = dubbo
dubbo.protocol.port = -1
dubbo.protocol.dispatcher = message
dubbo.protocol.threadpool = cached
dubbo.protocol.threads = 800
。。。。。。。

第二步：注销springboot里面配置的加载dubbo的xml配置和springboot管理的dubbo的bean：

<!--    <dubbo:protocol name="dubbo" port="-1" dispatcher="message" threadpool="cached" threads="${cdc_mbhk_loyalty_member_threads:800}"/>-->

第三步：启动类加上注解：@EnableDubbo：

package com.aswatson.csc.member;

import java.util.concurrent.Executor;
import org.apache.dubbo.config.spring.context.annotation.EnableDubbo;
import org.apache.dubbo.config.spring.context.annotation.EnableDubboConfig;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.actuate.autoconfigure.metrics.MeterRegistryCustomizer;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.ImportResource;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.annotation.EnableScheduling;

import io.micrometer.core.instrument.MeterRegistry;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

/**
 * @author Albert.Yang
 */
@Configuration
@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class})
@ComponentScan({"com.aswatson.csc.member.*"})
@EnableDubbo
@MapperScan("com.aswatson.csc.member.infrastructure.dao.mapper.*")
@ImportResource(locations = {"classpath:dubbo/spring-csc-member-agent-context.xml"})
@EnableDiscoveryClient
@EnableScheduling
@EnableAsync
public class MemberApplication {
    public static void main(String[] args) {
        SpringApplication.run(MemberApplication.class, args);
    }

    @Bean
    MeterRegistryCustomizer<MeterRegistry> configurer(@Value("${spring.application.name}") String applicationName) {
        return registry -> registry.config().commonTags("application", applicationName);
    }

}

第四步：MemberCardService层加注解@DubboService和修改配置：

/**
 * @Author Tim.Li
 * @Date 2020/4/3 14:56
 */
//ConditionalOnProperty是为了如果配置了，就可以动态开启是否加载，注册这个service配置
@ConditionalOnProperty(value = "${dubbo.service.com.aswatson.csc.member.service.MemberCardService}",havingValue = "true")
@Component
@Slf4j
@DubboService(interfaceClass = MemberCardService.class ,version = "1.0", group = "${pos}")
public class MemberCardServiceImpl implements MemberCardService {

    @Override
    @Transactional
    public ResponseMessages<MemberUpsetResVO> updateMemberInfo(MemberUpsetVO memberUpsetVO) {

        System.out.println("=====================================1");
        return null;

    }
}

解释：用dubboService注入的bean：MemberCardService 会和原生的 org.springframework.beans. 包的注入@Autowired 方式冲突，

因为一种是spring框架自己管理的bean方式，dubboService的是通过dubbo方式来注入和管理bean。需要统一成一致的，或者兼容（暂无测试兼容的版本）。

第五步：通过入口层调用dubbo服务：

    private static MemberCardService memberCardService = (MemberCardService) ApplicationContextRegister
            .getApplicationContext().getBean("memberCardService");

  //写在方法里面:
  ResponseMessages<MemberUpsetResVO> responseMessages = memberCardService.updateMemberInfo(memberUpsertVO);

package com.siebel.api.server;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.annotation.Lazy;
import org.springframework.stereotype.Component;

@Component
@Lazy(false)
public class ApplicationContextRegister implements ApplicationContextAware {
    private static final Logger LOGGER = LoggerFactory.getLogger(ApplicationContextRegister.class);
    private static ApplicationContext APPLICATION_CONTEXT;

    /**
     * * 设置spring上下文 * * @param applicationContext spring上下文 * @throws
     * BeansException
     */
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        LOGGER.debug("ApplicationContext registed-->{}", applicationContext);
        APPLICATION_CONTEXT = applicationContext;
    }

    public static ApplicationContext getApplicationContext() {
        return APPLICATION_CONTEXT;
    }
}

.................测试结果如下：

1.dubbo服务提供者项目起来之后，需要监控prodvier:是否注册到dubbo服务，拥到的工具：PrettyZoo

2.启动消费者服务，去调用provider的dubbo服务：

 结果： 调用成功。注销了springboot模式下加载dubbo的bean模式，不需要配置xml形式的dubbo的bean：