Dubbo生产者和消费者经典案例

一、导入依赖

<dependency>
      <groupId>javaee</groupId>
      <artifactId>javaee-api</artifactId>
      <version>5</version>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>fastjson</artifactId>
      <version>1.2.22</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>4.3.9.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.hamcrest/hamcrest-core -->
    <dependency>
      <groupId>org.hamcrest</groupId>
      <artifactId>hamcrest-core</artifactId>
      <version>1.3</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>4.3.9.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>4.3.9.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>4.3.9.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aspects</artifactId>
      <version>4.2.1.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context-support</artifactId>
      <version>4.1.9.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>4.3.9.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>4.1.9.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>4.3.9.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>4.1.9.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.2.2</version>
    </dependency>

    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.0</version>
    </dependency>

    <dependency>
      <groupId>org.javassist</groupId>
      <artifactId>javassist</artifactId>
      <version>3.17.1-GA</version>
    </dependency>

    <dependency>
      <groupId>cglib</groupId>
      <artifactId>cglib</artifactId>
      <version>2.2.2</version>
    </dependency>

    <dependency>
      <groupId>c3p0</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.1.2</version>
    </dependency>
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.31</version>
    </dependency>

    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>dubbo</artifactId>
      <version>2.5.3</version>
      <exclusions>
        <exclusion>
          <artifactId>spring</artifactId>
          <groupId>org.springframework</groupId>
        </exclusion>
      </exclusions>
    </dependency>
    <dependency>
      <groupId>org.apache.zookeeper</groupId>
      <artifactId>zookeeper</artifactId>
      <version>3.4.6</version>
      <exclusions>
        <exclusion>
          <artifactId>log4j</artifactId>
          <groupId>log4j</groupId>
        </exclusion>
      </exclusions>
    </dependency>
    <dependency>
      <groupId>com.github.sgroschupf</groupId>
      <artifactId>zkclient</artifactId>
      <version>0.1</version>
    </dependency>

二、生产者

2.1 创建service接口

public interface UserService {
    public String getName();
}

2.2创建service接口实现类

public class UserServiceImpl implements UserService{
    @Override
    public String getName() {
        return "userService服务启动成功";
    }
}

2.3 编写配置文件 

    <context:component-scan base-package="com.dubbo"/>
<!--声明服务提供方-->
    <dubbo:application name="provider"/>

    <!--注册中心地址-->
    <dubbo:registry address="zookeeper://127.0.0.1:2181"/>

    <!--dubbo服务端口-->
    <dubbo:protocol name="dubbo" port="20880"/>

    <!--服务注册-->
    <dubbo:service interface="com.dubbo.service.UserService" ref="userService"/>
    <bean id="userService" class="com.dubbo.service.UserServiceImpl"/>

    <dubbo:service interface="com.dubbo.service.DubboService" ref="dubboService"/>

2.4编写测试类 

 public static void main(String[] args) {
        ClassPathXmlApplicationContext context=new ClassPathXmlApplicationContext("ApplicationContext-service.xml");
        context.start();
        System.out.println("服务已注册");
        try {
            System.in.read();
        } catch (IOException e) {
            e.printStackTrace();
        }

        try {
            System.in.read();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

2.5控制台

三、消费者

3.1创建service层接口并与生产者命名一致

public interface UserService {
    public String getName();
}

3.2编写配置文件

  <!--服务的应用名称-->
    <dubbo:application name="consumer"/>
    <!--需要扫描的服务所在的包-->
    <!--<dubbo:annotation package="com.itheima.demo.com.dubbo.service" />-->
    <!--指定注册中心-->
    <dubbo:registry address="zookeeper://127.0.0.1:2181" />

    <dubbo:reference interface="com.dubbo.service.UserService" id="userService" />

    <dubbo:reference id="dubboService" interface="com.dubbo.service.DubboService"/>
    </beans>

3.3编写测试类 

 public static void main(String[] args) {
        ClassPathXmlApplicationContext classPathXmlApplicationContext=new ClassPathXmlApplicationContext("consumer.xml");
        UserService userService=(UserService)classPathXmlApplicationContext.getBean("userService");
        String name = userService.getName();
        System.out.println(name);

    }

3.4控制台