配置好jdk1.7、Zookeeper和Maven環境之后,開始嘗試第一次搭建簡單的dubbo生產者和消費者。
dubbo服務的原理,引用經典的官方圖(cr.Dubbo官網):
關於Dubbo的原理和機制,在此不做贅述,具體可以查詢官方文檔:http://dubbo.apache.org/#!/?lang=zh-cn。
接下來開始搭建生產者和消費者。
1.生產者(Provider)
創建一個maven項目,
代碼如下:
(1)接口ProviderService.java
package com.mohrss.service; public interface ProviderService { public void sayHello(); }
(2)實現類ProviderServiceImpl.java
package com.mohrss.service.impl; import com.mohrss.service.ProviderService; import org.springframework.stereotype.Service; @Service("providerService") public class ProviderServiceImpl implements ProviderService { public void sayHello() { // TODO Auto-generated method stub System.out.println("Hello I am Provider"); } }
(3)程序入口TestProviderService.java
package com.mohrss.service; import org.springframework.context.support.ClassPathXmlApplicationContext; public class TestProviderService { public static void main(String[] args) { ClassPathXmlApplicationContext context=new ClassPathXmlApplicationContext(new String[]{"dubbo-provider.xml"}); context.start(); System.out.println("生產者服務已經注冊成功!"); try { System.in.read();//讓此程序一直跑,表示一直提供服務 } catch (Exception e) { e.printStackTrace(); } } }
(4)dubbo配置文件dubbo-provider.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" 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 http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd "> <!--用注解方式實現bean--> <context:component-scan base-package="com.mohrss.service"> <context:include-filter type="annotation" expression="org.springframework.stereotype.Service"/> </context:component-scan> <!-- 提供方應用信息,用於計算依賴關系 --> <dubbo:application name="provider" /> <!-- 使用zookeeper注冊中心暴露服務地址 --> <dubbo:registry address="zookeeper://127.0.0.1:2181" /> <!-- 用dubbo協議在20880端口暴露服務 --> <dubbo:protocol name="dubbo" port="29014" /> <!-- 聲明需要暴露的服務接口 --> <dubbo:service interface="com.mohrss.service.ProviderService" ref="providerService" /> </beans>
(5)依賴文件配置pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.mohrss</groupId> <artifactId>provider</artifactId> <version>0.0.1-SNAPSHOT</version> <properties> <spring.version>4.3.2.RELEASE</spring.version> </properties> <dependencies> <dependency> <groupId>com.alibaba</groupId> <artifactId>dubbo</artifactId> <version>2.5.6</version> </dependency> <dependency> <groupId>com.github.sgroschupf</groupId> <artifactId>zkclient</artifactId> <version>0.1</version> </dependency> </dependencies> </project>
2.消費者(Consumer)
消費者搭建和生產者相同的maven項目
(1)TestConsumerService.java
package com.mohrss.consumer; import java.io.IOException; import org.springframework.context.support.ClassPathXmlApplicationContext; import com.mohrss.service.ProviderService; public class TestConsumerService { public static void main(String[] args) { ClassPathXmlApplicationContext context=new ClassPathXmlApplicationContext(new String[]{"dubbo-consumer.xml"}); context.start(); ProviderService testService = (ProviderService) context.getBean("testProviderService"); testService.sayHello(); try { System.in.read(); } catch (IOException e) { e.printStackTrace(); } } }
(2)dubbo-consumer.xml
<?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,用於計算依賴關系,不是匹配條件,不要與提供方一樣 --> <dubbo:application name="consumer" /> <!-- 使用multicast廣播注冊中心暴露發現服務地址 --> <dubbo:registry protocol="zookeeper" address="127.0.0.1:2181" /> <!-- 生成遠程服務代理,可以和本地bean一樣使用demoService --> <dubbo:reference id="testProviderService" interface="com.mohrss.service.ProviderService" /> </beans>
3.啟動zookeeper,右鍵啟動TestProviderService.java,將看到生產者成功注冊:
然后右鍵TestConsumerService.java, Run as Application,將看到:
注意:消費者調用服務方接口,應當將provider編譯成jar包放到消費者中進行引用,此處為了方便,直接引用了生產者的接口文件ProviderService.java
注:原創博客,轉載請注明。