标签:dubbo
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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。 |
(#)
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 } } |
(#)
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 } } |
标签:dubbo
原文地址:http://blog.csdn.net/p0p0p0p01/article/details/44809033