*前言:上一篇文章中,我们已经成功发布了一个dubbo服务接口,下面我们建立一个消费者来消费服务。
*请先确保服务接口已经成功发布。
①首先,我们新建一个简单maven项目dubbo-demo-consumer
,在pom.xml下添入依赖:
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
<version>2.6.0</version>
</dependency>
<dependency>
<groupId>com.101tec</groupId>
<artifactId>zkclient</artifactId>
<version>0.10</version>
</dependency>
<dependency>
<groupId>org.apache.curator</groupId>
<artifactId>curator-framework</artifactId>
<version>4.0.1</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.46</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.25</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.4</version>
</dependency>
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-all</artifactId>
<version>4.0.35.Final</version>
</dependency>
②新建一个接口DemoProviderService
为服务提供者(与上篇文章的服务接口对应):
package com.java.service;
/**
* 服务提供者接口
* @author zxy
*
*/
public interface DemoProviderService {
public String sayHello(String name);
}
③将dubbo-demo\dubbo-demo-consumer\src\main\resources\META-INF\spring路径下的dubbo-demo-consumer.xml复制到项目resource
路径下,可参考我的写法:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
xmlns="http://www.springframework.org/schema/beans"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
<!-- 提供方应用名称,用于计算依赖关系 -->
<dubbo:application name="demo-provider"/>
<!-- 使用zookeeper注册中心暴露服务地址 本地为127.0.0.1 默认为2181端口 -->
<dubbo:registry address="zookeeper://127.0.0.1:2181"/>
<!-- 使用dubbo协议,在20880端口暴露服务 -->
<dubbo:protocol name="dubbo" port="20880"/>
<!-- service实现类作为本地的一个bean 与暴露的服务接口对应-->
<bean id="demoProviderService" class="com.java.service.impl.DemoProviderServiceImpl"/>
<!-- 声明需要暴露的服务接口 -->
<dubbo:service interface="com.java.service.DemoProviderService" ref="demoProviderService"/>
</beans>
④消费自定义服务接口:在项目test
路径下新建一个测试ConsumerTest
:
import java.io.IOException;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.java.service.DemoProviderService;
public class ConsumerTest {
public static void main(String[] args) {
ClassPathXmlApplicationContext context=new ClassPathXmlApplicationContext(new String[]{"dubbo-demo-consumer.xml"});
context.start();
DemoProviderService demoProviderService=(DemoProviderService)context.getBean("demoProviderService");
String result=demoProviderService.sayHello("您好");
System.out.println("远程调用的结果:"+result);
try {
System.in.read();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
context.close();
}
}
运行程序,eclipse控制台可以看到:
同时,我们观察管理控制器,可以看到dubbo服务变化了状态信息,由未消费变成了正常,可以对消费者进行功能管理:
*自此,我们成功消费了暴露的自定义服务接口。