dubbo注解式服務（2）

一、配置服務提供方

1、首先配置spring配置

<?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://code.alibabatech.com/schema/dubbo"
    xsi:schemaLocation="http://www.springframework.org/schema/beans        http://www.springframework.org/schema/beans/spring-beans.xsd        http://code.alibabatech.com/schema/dubbo        http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
 
    <!-- 提供方應用資訊，用于計算依賴關系 -->
    <dubbo:application name="hello-world-app"  />
 
    <!-- 使用multicast廣播注冊中心暴露服務位址 -->
    <dubbo:registry address="multicast://224.5.6.7:1234" />
 
    <!-- 用dubbo協定在20880端口暴露服務 -->
    <dubbo:protocol name="dubbo" port="20880" />
 
    <!-- 聲明需要暴露的服務接口 -->
    <dubbo:service inter ref="demoService" />
 
    <!-- 和本地bean一樣實作服務 -->
    <bean id="demoService" class="com.alibaba.dubbo.demo.provider.DemoServiceImpl" />
    
 <!-- 掃描注解包路徑，多個包用逗号分隔，不填pacakge表示掃描目前ApplicationContext中所有的類 -->
<dubbo:annotation package="com.alibaba.dubbo.annotation.service" />
</beans>
           

2、編寫服務提供方的實作類

package com.alibaba.dubbo.annotation.service.impl;
import com.alibaba.dubbo.annotation.service.DemoService;
import com.alibaba.dubbo.config.annotation.Service;
@Service(version = "1.0.0")
public class DemoServiceImpl implements DemoService {
	public String sayHello(String name) {
		// TODO Auto-generated method stub
		 System.out.print("annotation say"+name);
		return name;
	}
}
           

DemoService 接口類類同上一篇，封裝在soa-common項目中

提供方的啟動類不在贅述，參考作者上一篇文章

二、配置服務消費者

1、首先配置spring

<?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://code.alibabatech.com/schema/dubbo"
    xsi:schemaLocation="http://www.springframework.org/schema/beans        http://www.springframework.org/schema/beans/spring-beans.xsd        http://code.alibabatech.com/schema/dubbo        http://code.alibabatech.com/schema/dubbo/dubbo.xsd">

    <!-- 消費方應用名，用于計算依賴關系，不是比對條件，不要與提供方一樣 -->
    <dubbo:application name="consumer-of-helloworld-app"  />
 
    <!-- 使用multicast廣播注冊中心暴露發現服務位址 -->
    <dubbo:registry address="multicast://224.5.6.7:1234" />
 
    <!-- 生成遠端服務代理，可以和本地bean一樣使用demoService -->
    <dubbo:reference id="demoService" inter />
 
 <!-- 掃描注解包路徑，多個包用逗号分隔，不填pacakge表示掃描目前ApplicationContext中所有的類 -->
<dubbo:annotation package="com.alibaba.dubbo.action" />
</beans>
           

2、調用類如下;

package com.alibaba.dubbo.action;

import org.springframework.stereotype.Component;
import com.alibaba.dubbo.annotation.service.DemoService;
import com.alibaba.dubbo.config.annotation.Reference;

@Component
public class DemoAction {
	@Reference(version = "1.0.0")
	private DemoService demoService;

	public void say() {
		demoService.sayHello("hello");
	}
}
           

3、然後測試類如下;

import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.alibaba.dubbo.action.DemoAction;
public class Consumer {
    public static void main(String[] args) throws Exception {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[] {"applicationContext.xml"});
        context.start();
        DemoAction demoService = (DemoAction)context.getBean("demoAction"); // 擷取遠端服務代理
         demoService.say(); // 執行遠端方法
    }
}