dubbo集成spring

<dependency>
    <groupId>org.apache.dubbo</groupId>
    <artifactId>dubbo</artifactId>
    <version>2.7.5</version>
</dependency>

<dependency>
    <groupId>org.apache.dubbo</groupId>
    <artifactId>dubbo-dependencies-zookeeper</artifactId>
    <version>2.7.5</version>
    <type>pom</type>
</dependency>

<dependency>
    <groupId>cn.wjs</groupId>
    <artifactId>dubbo-xml-interface</artifactId>
    <version>1.0-SNAPSHOT</version>
</dependency>

<dubbo:application metadata-type="remote" name="demo-provider"/>
<dubbo:metadata-report address="zookeeper://127.0.0.1:2181"/>
<!-- zk注册中心 -->
<dubbo:registry address="zookeeper://127.0.0.1:2181"/>

<dubbo:protocol name="dubbo"/>

<bean id="demoService" class="cn.wjs.DemoServiceImpl"/>
<!-- 生成远程服务代理，可以和本地bean一样使用demoService -->
<dubbo:service interface="cn.wjs.DemoService" ref="demoService"/>

public class DemoServiceImpl implements DemoService {
    private static final Logger logger = LoggerFactory.getLogger(DemoServiceImpl.class);

    public String sayHello(String name) {
        logger.info("aaa");
        return "Hello " + name;
    }

}

public class Application {
    public static void main(String[] args) throws Exception {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("spring/dubbo-provider.xml");
        context.start();
        System.in.read();
    }
}

<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:dubbo="http://dubbo.apache.org/schema/dubbo"
       xmlns="http://www.springframework.org/schema/beans"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
       http://dubbo.apache.org/schema/dubbo http://dubbo.apache.org/schema/dubbo/dubbo.xsd">
<!-- 消费方应用名，用于计算依赖关系，不是匹配条件，不要与提供方一样 -->
    <dubbo:application name="demo-consumer"/>

    <dubbo:registry address="zookeeper://127.0.0.1:2181"/>
<!-- 生成远程服务代理，可以和本地bean一样使用demoService -->
    <dubbo:reference id="demoService" check="false" interface="cn.wjs.DemoService"/>

</beans>

public class Application {
    /**
     * In order to make sure multicast registry works, need to specify ‘-Djava.net.preferIPv4Stack=true‘ before
     * launch the application
     */
    public static void main(String[] args) throws Exception {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("spring/dubbo-consumer.xml");
        context.start();
        DemoService demoService = (DemoService) context.getBean("demoService"); // 获取远程服务代理
        String hello = demoService.sayHello("world"); // 执行远程方法
        System.out.println(hello); // 显示调用结果
    }
}