1、代码结构

spring dubbo demo_Spring

2、整体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>org.test</groupId>
    <artifactId>dubbomicroservice</artifactId>
    <version>1.0-SNAPSHOT</version>

    <packaging>pom</packaging>

    <modules>
        <module>dubbo-movie-provider</module>
        <module>dubbo-user-consumer</module>
        <module>dubbo-api</module>
    </modules>

</project>
3、dubbo-api

3.1、dubbo-api 代码结构

spring dubbo demo_Spring_02

3.2、dubbo-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>dubbomicroservice</artifactId>
        <groupId>org.test</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.test</groupId>
    <artifactId>dubbo-api</artifactId>

    <dependencies>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>dubbo</artifactId>
            <version>2.6.8</version>
        </dependency>

<!--        <dependency>-->
<!--            <groupId>org.apache.dubbo</groupId>-->
<!--            <artifactId>dubbo</artifactId>-->
<!--            <version>2.7.6</version>-->
<!--        </dependency>-->

        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-framework</artifactId>
            <version>4.3.0</version>
        </dependency>
    </dependencies>
</project>

3.3 dubbo-api service接口

MovieService

package com.test.dubbo.service;

import com.test.dubbo.bean.Movie;

public interface MovieService {

    public Movie getNewMovie();
}

UserService

package com.test.dubbo.service;

import com.test.dubbo.bean.Movie;
//import com.test.dubbo.bean.Order;
import com.test.dubbo.bean.User;

public interface UserService {

    public Movie buyNewMovie();

}

3.4 dubbo-api bean

Movie

package com.test.dubbo.bean;

import java.io.Serializable;

public class Movie implements Serializable {


    private Integer id;
    private String movieName;
    private Double price;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getMovieName() {
        return movieName;
    }

    public void setMovieName(String movieName) {
        this.movieName = movieName;
    }

    public Double getPrice() {
        return price;
    }

    public void setPrice(Double price) {
        this.price = price;
    }


    @Override
    public String toString() {
        return "Movie{" +
                "id=" + id +
                ", movieName='" + movieName + '\'' +
                ", price=" + price +
                '}';
    }
}

User

package com.test.dubbo.bean;

import java.io.Serializable;

public class User implements Serializable {

    private Integer id;
    private String username;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }
}
4、dubbo-movie-provider

4.1、dubbo-movie-provider 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>dubbomicroservice</artifactId>
        <groupId>org.test</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.test</groupId>
    <artifactId>dubbo-movie-provider</artifactId>

    <dependencies>
        <dependency>
            <groupId>com.test</groupId>
            <artifactId>dubbo-api</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>

</project>

4.2 dubbo-movie-provider MovieServiceImpl

package com.test.dubbo.service.impl;

import com.test.dubbo.bean.Movie;
import com.test.dubbo.service.MovieService;

public class MovieServiceImpl implements MovieService {
    public Movie getNewMovie() {
        //模拟经过数据库操作，等一些列操作获取了最新的电影
        Movie movie = new Movie();
        movie.setId(1);
        movie.setMovieName("电影名");
        movie.setPrice(96.99);
        System.out.println("电影服务被调用");
        return movie;
    }
}

4.3 dubbo-movie-provoder 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-4.3.xsd http://dubbo.apache.org/schema/dubbo  http://dubbo.apache.org/schema/dubbo/dubbo.xsd">
    <!-- 提供方应用信息，用于计算依赖关系 -->

    <!--1、为当前应用起个名字-->
    <dubbo:application name="dubbo-movie-provider"  />

    <!--2、告诉Dubbo注册中心地址在哪里？注册中心用的是zookeeper -->
    <dubbo:registry address="zookeeper://127.0.0.1:2181" />

    <!--3、 用dubbo协议在20880端口暴露服务,消费者就会与本机的20880建立连接并进行通信-->
    <dubbo:protocol name="dubbo" port="20880" />

    <!--4、 声明需要暴露的服务接口（哪些接口能对外提供功能都在这里一一注册；ref指定接口实现类的名字-->
    <dubbo:service interface="com.test.dubbo.service.MovieService" ref="movieService" />

    <!--5、 和本地bean一样实现服务 -->
    <bean id="movieService" class="com.test.dubbo.service.impl.MovieServiceImpl" />
</beans>

4.4 dubbo-movie-provider MainApplication

package com.test.dubbo;

import org.apache.jute.CsvOutputArchive;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.io.IOException;

public class MainApplication {
    public static void main(String[] args) throws IOException {
        ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext("provider.xml");
        System.out.println("容器启动......");
        applicationContext.start();
        System.in.read();//按任意键退出
    }
}
5、dubbo-user-consumer 5.1、dubbo-user-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>dubbomicroservice</artifactId>
        <groupId>org.test</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.test</groupId>
    <artifactId>dubbo-user-consumer</artifactId>
        <dependencies>
            <dependency>
                <groupId>com.test</groupId>
                <artifactId>dubbo-api</artifactId>
                <version>1.0-SNAPSHOT</version>
            </dependency>
        </dependencies>

</project>

5.2 dubbo-user-consumer UserServiceImpl

package com.test.dubbo.service.impl;

import com.test.dubbo.bean.Movie;
//import com.test.dubbo.bean.Order;
import com.test.dubbo.bean.User;
import com.test.dubbo.service.MovieService;
import com.test.dubbo.service.UserService;

public class UserServiceImpl implements UserService {

    MovieService movieService;

    public MovieService getMovieService() {
        return movieService;
    }

    public void setMovieService(MovieService movieService) {
        this.movieService = movieService;
    }

    public Movie buyNewMovie() {

        //Order order = new Order();
        //1.远程查询最新电影，并返回

        System.out.println("consumer消费者工程开始调用远程电影服务");
        Movie movie = movieService.getNewMovie();
        System.out.println("consumer消费者工程调用远程电影服务，获取了最新的电影"+movie);
        System.out.println("consumer消费者工程调用远程电影服务结束");

        //2.封装Order对象，并返回

//        order.setUserName(user.getUsername());
//        order.setMovieId(movie.getId());
//        order.setMovieName(movie.getMovieName());
        return movie;
    }
}

5.3 dubbo-user-consumer 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-4.3.xsd http://dubbo.apache.org/schema/dubbo  http://dubbo.apache.org/schema/dubbo/dubbo.xsd">
    <!-- 提供方应用信息，用于计算依赖关系 -->

    <!--1、为当前应用起个名字-->
    <dubbo:application name="dubbo-user-consumer"  />

    <!--2、告诉Dubbo注册中心地址在哪里？注册中心用的是zookeeper -->
    <dubbo:registry address="zookeeper://127.0.0.1:2181" />

    <!--3、 要调用哪个远程服务【服务引用】-->
    <dubbo:reference id="movieService" interface="com.test.dubbo.service.MovieService" />

    <!--4、将消费者加入到容器中 -->
    <bean id="userService" class="com.test.dubbo.service.impl.UserServiceImpl" >

        <property name="movieService" ref="movieService">

    </property>
    </bean>
</beans>

5.4 dubbo-user-consumer MainApplication

package com.test.dubbo;

import com.test.dubbo.bean.Movie;
import com.test.dubbo.service.UserService;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.io.IOException;

public class MainApplication {
    public static void main(String[] args) throws IOException {
        ClassPathXmlApplicationContext applicationContext =
                new ClassPathXmlApplicationContext("consumer.xml");
        applicationContext.start();
        UserService userService = applicationContext.getBean(UserService.class);

        //测试这次远程调用是否成功
        Movie newestMovie = userService.buyNewMovie();
        System.out.println(newestMovie);

        System.in.read();
    }
}
6、docker启动Zookeeper 
docker run --privileged=true -d --name zookeeper --publish 2181:2181  -d zookeeper:latest
7、运行provider MainApplication 8、运行consumer MainApplication 消费者调用提供者 9、 github代码地址

https://github.com/xidianzxm/dubbomicroservice