搭建简单的Dubbo生产者与消费者

Melody132

发布于 2020-03-10 09:09:30

9110

发布于 2020-03-10 09:09:30

文章被收录于专栏：时光笔记时光笔记

前言

Dubbo是一款高性能、轻量级的开源Java RPC框架，它提供了三大核心能力：面向接口的远程方法调用，智能容错和负载均衡，以及服务自动注册和发现。

搭建演示

一、安装Zookeeper

安装环境为Centos系统 IP:192.168.40.129，与Windows操作基本一样

安装Java环境

yum install java-1.8.0-openjdk.x86_64 -y

安装Zookeeper

#下载zookeeper
cd /usr/local/
wget http://mirror.bit.edu.cn/apache/zookeeper/zookeeper-3.4.14/zookeeper-3.4.14.tar.gz

#解压
tar -zxvf zookeeper-3.4.14.tar.gz 

#配置
cd ./zookeeper-3.4.14
mkdir data
vim conf/zoo_sample.cfg 
#修改 dataDir=/usr/local/zookeeper-3.4.14/data 
mv conf/zoo_sample.cfg conf/zoo.cfg

#启动
/usr/local/zookeeper-3.4.14/bin/zkServer.sh start

二、创建项目

开发环境为IDEA ，注意修改成正确的Maven配置

dubbo-demo

主体结构，其中producer和consumer也可以分开写，但在本例为方便而中写到了一起。

pom.xml

<?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>cn.ttext.demo.dubbo</groupId>
    <artifactId>dubbo-demo</artifactId>
    <packaging>pom</packaging>
    <version>1.0.0</version>
    <modules>
        <module>dubbo-demo-api</module>
        <module>duboo-demo-producer</module>
        <module>duboo-demo-consumer</module>
    </modules>

    <properties>
        <spring.version>4.3.3.RELEASE</spring.version>
        <dubbo.version>2.6.7</dubbo.version>
        <netty.version>4.1.43.Final</netty.version>
        <curator.version>4.2.0</curator.version>
        <zookeeper.version>3.4.14</zookeeper.version>
    </properties>

    <dependencies>

        <dependency>
            <groupId>io.netty</groupId>
            <artifactId>netty-all</artifactId>
            <version>${netty.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-framework</artifactId>
            <version>${curator.version}</version>
            <exclusions>
                <exclusion>
                    <artifactId>zookeeper</artifactId>
                    <groupId>org.apache.zookeeper</groupId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <artifactId>zookeeper</artifactId>
            <groupId>org.apache.zookeeper</groupId>
            <version>${zookeeper.version}</version>
        </dependency>

        <!-- spring依赖 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <!-- dubbo依赖 -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>dubbo</artifactId>
            <version>${dubbo.version}</version>
        </dependency>
    </dependencies>

</project>

dubbo-demo-api

pom.xml

<?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">
    <parent>
        <artifactId>dubbo-demo</artifactId>
        <groupId>cn.ttext.demo.dubbo</groupId>
        <version>1.0.0</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <version>1.0.0</version>
    <artifactId>dubbo-demo-api</artifactId>
</project>

IDemoService

package cn.ttext.demo.dubbo.api;

public interface IDemoService {
    String say(String val);
}

dubbo-demo-producer

pom.xml

<?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">
    <parent>
        <artifactId>dubbo-demo</artifactId>
        <groupId>cn.ttext.demo.dubbo</groupId>
        <version>1.0.0</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <version>1.0.0</version>
    <artifactId>dubbo-demo-producer</artifactId>

    <dependencies>
        <dependency>
            <groupId>cn.ttext.demo.dubbo</groupId>
            <artifactId>dubbo-demo-api</artifactId>
            <version>1.0.0</version>
        </dependency>
    </dependencies>

</project>

spring-dubbo-producer.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">

    <dubbo:application name="dubbo-demo-producer"/>
    <!-- 注册中心地址 -->
    <dubbo:registry address="zookeeper://192.168.40.129:2181"/>
    <!-- 服务端口 -->
    <dubbo:protocol name="dubbo" port="20880"/>

    <bean id="demoService" class="cn.ttext.demo.dubbo.api.impl.DemoServiceImpl"/>

    <dubbo:service interface="cn.ttext.demo.dubbo.api.IDemoService" ref="demoService"/>

</beans>

DemoServiceImpl

package cn.ttext.demo.dubbo.api.impl;

import cn.ttext.demo.dubbo.api.IDemoService;
import com.alibaba.dubbo.rpc.RpcContext;

public class DemoServiceImpl implements IDemoService {
    public String say(String val) {
        return RpcContext.getContext().getLocalAddress() + ":" + val;
    }
}

Main

package cn.ttext.demo.dubbo;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.io.IOException;

public class Main {
    public static void main(String[] args) throws IOException {
        new ClassPathXmlApplicationContext(new String[]{"spring-dubbo-producer.xml"}).start();
        System.out.println("服务已启动");
        System.in.read();
    }
}

dubbo-demo-consumer

pom.xml

<?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">
    <parent>
        <artifactId>dubbo-demo</artifactId>
        <groupId>cn.ttext.demo.dubbo</groupId>
        <version>1.0.0</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <version>1.0.0</version>
    <artifactId>duboo-demo-consumer</artifactId>

    <dependencies>
        <dependency>
            <groupId>cn.ttext.demo.dubbo</groupId>
            <artifactId>dubbo-demo-api</artifactId>
            <version>1.0.0</version>
        </dependency>
    </dependencies>
</project>

spring-dubbo-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">

    <dubbo:application name="dubbo-demo-producer"/>

    <dubbo:registry address="zookeeper://192.168.40.129:2181"/>

    <dubbo:reference id="demoService" check="false" interface="cn.ttext.demo.dubbo.api.IDemoService"/>

</beans>

Main

package cn.ttext.demo.dubbo;

import cn.ttext.demo.dubbo.api.IDemoService;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Main {
    public static void main(String[] args) throws InterruptedException {
        ClassPathXmlApplicationContext classPathXmlApplicationContext =
                new ClassPathXmlApplicationContext(new String[]{"spring-dubbo-consumer.xml"});
        classPathXmlApplicationContext.start();

        IDemoService iDemoService = (IDemoService) classPathXmlApplicationContext.getBean("demoService");

        while (true) {
            Thread.sleep(1000);
            System.out.println(iDemoService.say("Hello!!!"));
        }
    }
}