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:​​​

idea安装

maven安装​

zookeeper安装​

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 

dubbo接口demo开发_xml

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】

dubbo接口demo开发_xml_02

启动provider

dubbo接口demo开发_xml_03

服务注册成功

dubbo接口demo开发_ide_04

dubbo接口demo开发_spring_05

启动consumer,可以看到输出了结果

dubbo接口demo开发_spring_06

dubbo接口demo开发_ide_07

在provider端,也可以看到客户端发过来的消息

dubbo接口demo开发_ide_08 

至此,开发完成。



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