Dubbo是一款高性能、轻量级的开源Java RPC框架。
很多朋友想学习测试dubbo接口,但是苦于没有可练习的dubbo接口而放弃,下面我就带大家开发一个简单的dubbo接口。
接口需求
客户端输入uncleyong(当然,也可以输入其它字符串),服务端返回hello uncleyong
开发环境
jdk + idea + maven + zookeeper
jdk安装:https://www.cnblogs.com/uncleyong/p/10732951.html
idea安装:https://www.cnblogs.com/uncleyong/p/10971923.html
maven安装:https://www.cnblogs.com/uncleyong/p/10743181.html
zookeeper安装:https://www.cnblogs.com/uncleyong/p/10737119.html
common开发
idea中创建模块dubbo-common
存放公共的实体类、接口
package com.uncleyong.dubbotest.service; public interface SayHelloToClient { public String sayHello(String name); }
然后mvn install打包,供provider及consumer在pom文件中引包
provider开发
idea中创建模块dubbo_provider
创建实现类
package com.uncleyong.dubbotest.service.impl; import com.uncleyong.dubbotest.service.SayHelloToClient; public class SayHelloToClientImpl implements SayHelloToClient { public String sayHello(String name){ System.out.println("from client :" + name); return "hello, " + name; } }
配置文件,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://dubbo.apache.org/schema/dubbo" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://dubbo.apache.org/schema/dubbo http://dubbo.apache.org/schema/dubbo/dubbo.xsd"> <dubbo:application name="dubbo-provider"/> <!-- 使用zookeeper广播注册中心暴露服务地址 --> <dubbo:registry address="zookeeper://127.0.0.1:2181"/> <!-- 用dubbo协议在20880端口暴露服务 --> <dubbo:protocol name="dubbo" port="20888"/> <!-- 声明需要暴露的服务接口 --> <dubbo:service interface="com.uncleyong.dubbotest.service.SayHelloToClient" ref="sayhellotoclient"/> <!-- 和本地bean一样实现服务 --> <bean id="sayhellotoclient" class="com.uncleyong.dubbotest.service.impl.SayHelloToClientImpl"/> </beans>
创建主运行文件,ProviderMain
package com.uncleyong.dubbotest.main; import org.springframework.context.support.ClassPathXmlApplicationContext; public class ProviderMain { public static void main(String[] args) throws Exception { ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext( new String[] {"provider.xml"}); context.start(); System.out.println("注册成功,如想退出,按任意键退出"); System.in.read(); // 按任意键退出 } }
consumer开发
idea中创建模块dubbo_consumer
主运行文件
package com.uncleyong.dubbotest.main; import com.uncleyong.dubbotest.service.SayHelloToClient; import org.springframework.context.support.ClassPathXmlApplicationContext; import java.util.Scanner; public class ConsumerMain { public static void main(String[] args) throws Exception { ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext( new String[] {"consumer.xml"}); context.start(); // 获取远程服务代理 SayHelloToClient say = (SayHelloToClient) context.getBean("sayhellotoclient"); // 执行远程方法 String res = say.sayHello("UncleYong"); // 显示调用结果 System.out.println(res); new Scanner(System.in).next(); } }
配置文件,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://dubbo.apache.org/schema/dubbo" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://dubbo.apache.org/schema/dubbo http://dubbo.apache.org/schema/dubbo/dubbo.xsd"> <dubbo:application name="dubbo-consumer"/> <!-- 使用zookeeper广播注册中心暴露发现服务地址 --> <dubbo:registry address="zookeeper://127.0.0.1:2181"/> <!-- 生成远程服务代理,可以和本地bean一样使用demoService --> <dubbo:reference id="sayhellotoclient" interface="com.uncleyong.dubbotest.service.SayHelloToClient"/> </beans>
运行结果
先启动zookeeper,进入zookeeper的bin目录,点击【zkServer.cmd】
启动provider
服务注册成功
启动consumer,可以看到输出了结果
在provider端,也可以看到客户端发过来的消息
至此,开发完成。