Dubbo学习（三）HelloWorld
2017-10-26 本文已影响34人
万总有点菜
准备
- 创建一个maven主工程
- 创建三个子模块，接口模块dubboapi、生产者模块dubboprovider、消费者模块dubboconsumer
<?xml version="1.0" encoding="UTF-8"?>
<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.maple.dubbodemo</groupId>
<artifactId>dubbo-root</artifactId>
<packaging>pom</packaging>
<version>1.0-SNAPSHOT</version>
<modules>
<module>dubboapi</module>
<module>dubboprovider</module>
<module>dubboconsumer</module>
</modules>
</project>
接口模块dubboapi
- 创建接口
package com.maple.dubbodemo;
/**
* Created by maple on 2017-10-26.
*/
public interface HelloService {
public String sayHello(String content);
}
生产者模块dubboprovider
- 引入接口模块，在pom.xml配置
<dependency>
<groupId>com.maple.dubbodemo</groupId>
<artifactId>dubbo-api</artifactId>
<version>${project.parent.version}</version>
</dependency>
- 引入dubbo以及spring的包，在pom.xml配置
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
<version>2.5.6</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.zookeeper/zookeeper -->
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<version>3.4.10</version>
<type>pom</type>
</dependency>
<!-- https://mvnrepository.com/artifact/com.101tec/zkclient -->
<dependency>
<groupId>com.101tec</groupId>
<artifactId>zkclient</artifactId>
<version>0.10</version>
</dependency>
- 实现接口
package com.maple.dubbodemo.provider;
import com.alibaba.dubbo.rpc.RpcContext;
import com.maple.dubbodemo.HelloService;
import java.text.SimpleDateFormat;
import java.util.Date;
/**
* Created by maple on 2017-10-26.
*/
public class HelloServiceImpl implements HelloService {
public String sayHello(String content) {
System.out.println("[" + new SimpleDateFormat("HH:mm:ss").format(new Date()) + "] Hello " + content + ", request from consumer: " + RpcContext.getContext().getRemoteAddress());
return "Hello " + content + ", response form provider: " + RpcContext.getContext().getLocalAddress();
}
}
- 生产者spring配置，路径\src\main\resources\META-INF\spring下创建配置文件dubbo-demo-provider.xml；
<?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">
<!-- 提供方应用信息，用于计算依赖关系 -->
<dubbo:application name="demo-provider"/>
<!-- 使用注册中心暴露服务地址 -->
<dubbo:registry id="myzk" address="127.0.0.1:2181" protocol="zookeeper"/>
<!-- 用dubbo协议在20880端口暴露服务 -->
<dubbo:protocol id="mydubbo" name="dubbo" port="20880"/>
<dubbo:provider registry="myzk" protocol="mydubbo"/>
<!-- 和本地bean一样实现服务 -->
<bean id="helloService" class="com.maple.dubbodemo.provider.HelloServiceImpl"/>
<!-- 声明需要暴露的服务接口 -->
<dubbo:service interface="com.maple.dubbodemo.HelloService" ref="helloService"/>
</beans>
- 创建生产者
package com.maple.dubbodemo.provider;
import org.springframework.context.support.ClassPathXmlApplicationContext;
/**
* Created by maple on 2017-10-26.
*/
public class Provider {
public static void main(String[] args) throws Exception {
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[]{"META-INF/spring/dubbo-demo-provider.xml"});
context.start();
System.in.read(); // 按任意键退出
}
}
- 运行main，查看dubbo-admin；
- 模块结构
消费者模块dubboconsumer
- 引入接口模块，在pom.xml配置
<dependency>
<groupId>com.maple.dubbodemo</groupId>
<artifactId>dubbo-api</artifactId>
<version>${project.parent.version}</version>
</dependency>
- 引入dubbo以及spring的包，在pom.xml配置
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
<version>2.5.6</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.zookeeper/zookeeper -->
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<version>3.4.10</version>
<type>pom</type>
</dependency>
<!-- https://mvnrepository.com/artifact/com.101tec/zkclient -->
<dependency>
<groupId>com.101tec</groupId>
<artifactId>zkclient</artifactId>
<version>0.10</version>
</dependency>
- 消费者spring配置，路径\src\main\resources\META-INF\spring下创建配置文件dubbo-demo-consumer.xml；
<?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">
<!-- 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="demo-consumer"/>
<!-- 使用注册中心暴露发现服务地址 -->
<dubbo:registry id="zk" address="127.0.0.1:2181" protocol="zookeeper"/>
<dubbo:consumer registry="zk"/>
<!-- 生成远程服务代理，可以和本地bean一样使用demoService -->
<dubbo:reference id="helloService" check="false" interface="com.maple.dubbodemo.HelloService"/>
</beans>
- 创建消费者
package com.maple.dubbodemo.consumer;
import com.maple.dubbodemo.HelloService;
import org.springframework.context.support.ClassPathXmlApplicationContext;
/**
* Created by maple on 2017-10-26.
*/
public class Consumer {
public static void main(String[] args) {
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[]{"META-INF/spring/dubbo-demo-consumer.xml"});
context.start();
HelloService helloService = (HelloService) context.getBean("helloService"); // 获取远程服务代理
String hello = helloService.sayHello("world"); // 执行远程方法
System.out.println(hello); // 显示调用结果
}
}
- 运行main
消费者调用到服务
生产者服务被调用
