标签:style http color io os 使用 ar java strong
http://alibaba.github.io/dubbo-doc-static/User+Guide-zh.htm#UserGuide-zh-API%E9%85%8D%E7%BD%AE
http://alibaba.github.io/dubbo-doc-static/Home-zh.htm
Dubbo[]是一个分布式服务框架,致力于提供高性能和透明化的RPC远程服务调用方案,以及SOA服务治理方案。
其核心部分包含:
Dubbo采用全Spring配置方式,透明化接入应用,对应用没有任何API侵入,只需用Spring加载Dubbo的配置即可,Dubbo基于Spring的Schema扩展进行加载。 |
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定义服务接口: (该接口需单独打包,在服务提供方和消费方共享)
package com.alibaba.dubbo.demo; public interface DemoService { String sayHello(String name); } |
在服务提供方实现接口:(对服务消费方隐藏实现)
package com.alibaba.dubbo.demo.provider; import com.alibaba.dubbo.demo.DemoService; public class DemoServiceImpl implements DemoService { public String sayHello(String name) { return "Hello " + name; } } |
用Spring配置声明暴露服务:
<? xml version = "1.0" encoding = "UTF-8" ?> 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" > <!-- 提供方应用信息,用于计算依赖关系 --> < dubbo:application name = "hello-world-app" /> <!-- 使用multicast广播注册中心暴露服务地址 --> < dubbo:registry address = "multicast://224.5.6.7:1234" /> <!-- 用dubbo协议在20880端口暴露服务 --> < dubbo:protocol name = "dubbo" port = "20880" /> <!-- 声明需要暴露的服务接口 --> < dubbo:service interface = "com.alibaba.dubbo.demo.DemoService" ref = "demoService" /> <!-- 和本地bean一样实现服务 --> < bean id = "demoService" class = "com.alibaba.dubbo.demo.provider.DemoServiceImpl" /> </ beans > |
加载Spring配置:
import org.springframework.context.support.ClassPathXmlApplicationContext; public class Provider { public static void main(String[] args) throws Exception { ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext( new String[] { "http://10.20.160.198/wiki/display/dubbo/provider.xml" }); context.start(); System.in.read(); // 按任意键退出 } } |
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通过Spring配置引用远程服务:
<? xml version = "1.0" encoding = "UTF-8" ?> 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 = "consumer-of-helloworld-app" /> <!-- 使用multicast广播注册中心暴露发现服务地址 --> < dubbo:registry address = "multicast://224.5.6.7:1234" /> <!-- 生成远程服务代理,可以和本地bean一样使用demoService --> < dubbo:reference id = "demoService" interface = "com.alibaba.dubbo.demo.DemoService" /> </ beans > |
加载Spring配置,并调用远程服务:(也可以使用IoC注入)
import org.springframework.context.support.ClassPathXmlApplicationContext; import com.alibaba.dubbo.demo.DemoService; public class Consumer { public static void main(String[] args) throws Exception { ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext( new String[] { "http://10.20.160.198/wiki/display/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 } } |
想了解更多?阅读一下《用户指南》吧~~
标签:style http color io os 使用 ar java strong
原文地址:http://www.cnblogs.com/steven9801/p/4001707.html