国内分布式框架Dubbo使用详解

public interface HelloService {
    String sayHello(String name);
}

public class HelloServiceImpl implements HelloService {
    public String sayHello(String name) {
        return "Hello, " + name;
    }
}

<?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"
       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">
    <!-- 指定服务提供者应用名 -->
    <dubbo:application name="hello-provider"/>
    <!-- 指定注册中心地址 -->
    <dubbo:registry address="ZooKeeper://127.0.0.1:2181"/>
    <!-- 指定通信协议和端口号 -->
    <dubbo:protocol name="dubbo" port="20880"/>
    <!-- 暴露服务 -->
    <dubbo:service interface="com.example.HelloService" ref="helloService"/>
    <!-- 服务接口和实现类的关联 -->
    <bean id="helloService" class="com.example.provider.HelloServiceImpl"/>
</beans>

public class Provider {
    public static void main(String[] args) throws Exception {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("provider.xml");
        context.start();
        System.in.read(); // 按任意键退出
    }
}

public class Consumer {
    public static void main(String[] args) {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("consumer.xml");
        HelloService helloService = (HelloService) context.getBean("helloService");
        String result = helloService.sayHello("world");
        System.out.println(result);
    }
}

<?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"
       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">
    <!-- 指定服务消费者应用名 -->
    <dubbo:application name="hello-consumer"/>
    <!-- 指定注册中心地址 -->
    <dubbo:registry address="zookeeper://127.0.0.1:2181"/>
    <!-- 引用远程服务 -->
    <dubbo:reference id="helloService" interface="com.example.HelloService"/>
</beans>

public class Consumer {
    public static void main(String[] args) {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("consumer.xml");
        HelloService helloService = (HelloService) context.getBean("helloService");
        String result = helloService.sayHello("world");
        System.out.println(result);
    }
}