Dubbo是什么:
分布式服务框架
--高性能和透明化的RPC远程服务调用方案
--SOA服务治理方案
Dubbo解决问题:
透明化的远程方法调用,就像调用本地方法一样调用远程方法,只需简单配置,没有任何API侵入。
软负载均衡及容错机制,可在内网替代F5等硬件负载均衡器。
服务自动注册与发现,不再需要写死服务提供方地址,注册中心基于接口名查询服务提供者的IP地址,并且能够平滑添加或删除服务提供者。
Maven工程搭建:
pom文件见附件pom.zip
项目工程结构:
applicationContext_dubbo-provider.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">
<!-- ************************************************************************ -->
<!-- 将多个配置文件位置放到列表中 -->
<bean id="propertyResources" class="java.util.ArrayList">
<constructor-arg>
<list>
<value>classpath:/config.properties</value>
</list>
</constructor-arg>
</bean>
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations" ref="propertyResources" />
</bean>
<!-- ************************************************************************ -->
<!-- 提供方应用信息,用于计算依赖关系 -->
<dubbo:application name="dubbo-service-provider" />
<!-- 使用multicast广播注册中心暴露服务地址 -->
<!--
<dubbo:registry address="multicast://224.5.6.7:1234" />
<dubbo:protocol name="dubbo" port="10880" />
-->
<!-- 使用zookeeper注册中心暴露服务地址 -->
<dubbo:registry id="techtestRegistry" protocol="zookeeper" address="172.16.11.15:2181" />
<!-- 用dubbo协议在20880端口暴露服务 -->
<dubbo:protocol name="dubbo" port="20880" />
<dubbo:protocol name="rmi" port="1099" />
<dubbo:protocol name="hessian" port="8080" />
<!-- 声明需要暴露的服务接口 -->
<dubbo:service interface="cn.ias.agdis.techtest.dubbo.provider.service.UserService"
ref="userService" version="1.0.0" protocol="dubbo,hessian"/>
<!-- 和本地bean一样实现服务 -->
<bean id="userService" class="cn.ias.agdis.techtest.dubbo.provider.service.impl.UserServiceImpl">
<property name="dao" ref="userDao"/>
</bean>
<!-- dao bean -->
<bean id="userDao" class="cn.ias.agdis.techtest.dubbo.provider.dao.impl.UserDaoImpl" />
</beans>
applicationContext_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="dubbo-service-consumer" />
<dubbo:consumer check = "false"/>
<!-- 使用multicast广播注册中心暴露服务地址 -->
<!--
<dubbo:registry address="multicast://224.5.6.7:1234" />
<dubbo:protocol name="dubbo" port="10880" />
-->
<!-- 使用zookeeper注册中心暴露服务地址 -->
<dubbo:registry protocol="zookeeper" address="172.16.11.15:2181" />
<!-- 声明需要暴露的服务接口 -->
<dubbo:reference id="userServiceRPC" interface="cn.ias.agdis.techtest.dubbo.provider.service.UserService"
version="1.0.0" registry="techtestRegistry"/>
</beans>
web.xml
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app>
<display-name>Archetype Created Web Application</display-name>
<!-- location of spring xml files -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:/applicationContext_dubbo-provider.xml,classpath:/applicationContext-webservice-producer.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- CXF servlet -->
<servlet>
<servlet-name>CXFServlet</servlet-name>
<servlet-class>org.apache.cxf.transport.servlet.CXFServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<!-- all our webservices are mapped under this URI pattern -->
<servlet-mapping>
<servlet-name>CXFServlet</servlet-name>
<url-pattern>/webservices/*</url-pattern>
</servlet-mapping>
</web-app>
工程源码:
源码文件见附件 mytechtest.zip
Dubbo+Zookeeper 项目搭建
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转载自maosheng.iteye.com/blog/2218055
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