Dubbo框架及Dubbo接口测试

Dubbo的原理

 Dubbo的使用

【注册服务】

1. 准备一个提供方工程

服务提供者接口

public interface IStuService {

    String queryNameById(Integer id);
}

接口的实现类

public class StuServiceImpl implements IStuService {

    public String queryNameById(Integer id) {
        System.out.println("服务提供方获取到参数：" + id);
        return "小王八";
    }
}

2. 导入dubbo依赖

<!-- dubbo -->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>dubbo</artifactId>
    <version>2.5.8</version>
</dependency>

<!-- 操作zookeeper的依赖 -->
<dependency>
    <groupId>com.github.sgroschupf</groupId>
    <artifactId>zkclient</artifactId>
    <version>0.1</version>
</dependency>

3. 配置spring的配置文件applicationContext-dubbo.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://code.alibabatech.com/schema/dubbo"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">

    <!-- 配置dubbo -->


    <!-- 配置应用的名称 -->
    <dubbo:application name="dubbo-provider"/>
    <!-- 配置zookeeper的地址 -->
    <dubbo:registry address="zookeeper://192.168.227.130:2181"/>
    <!-- 配置注册的服务 -->
    <dubbo:service interface="com.qf.service.IStuService" ref="stuService"/>

    <bean id="stuService" class="com.qf.service.impl.StuServiceImpl"></bean>

</beans>

4. 启动spring容器，注册服务（demo）

public class Main {

    public static void main(String[] args) {
        //手动初始化Spring容器
        ClassPathXmlApplicationContext application
                = new ClassPathXmlApplicationContext("applicationContext-dubbo.xml");
        //一旦spring容器启动成功，服务就会自动注册到注册中心上


        //写一个死循环
        while(true){

        }
    }
}

 5. 检测服务

【发现与消费服务】

1. 创建一个服务的消费者

2. 导入dubbo依赖

<!-- dubbo -->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>dubbo</artifactId>
    <version>2.5.8</version>
</dependency>

<!-- 操作zookeeper的依赖 -->
<dependency>
    <groupId>com.github.sgroschupf</groupId>
    <artifactId>zkclient</artifactId>
    <version>0.1</version>
</dependency>

3. 配置applicationContext-dubbo.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://code.alibabatech.com/schema/dubbo"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">

    <!-- 创建应用的名称 -->
    <dubbo:application name="dubbo-consumer"/>
    <!-- 配置服务发现的地址 -->
    <dubbo:registry address="zookeeper://192.168.227.130:2181"/>
    <!-- 指定需要发现的服务名称 -->
    <dubbo:reference id="stuService" interface="com.qf.service.IStuService"/>

</beans>

4.定义main方法，消费服务

public class MainConsumer {

    public static void main(String[] args) {
        //初始化Spring容器 - 服务就会自动发现
        ClassPathXmlApplicationContext application
                = new ClassPathXmlApplicationContext("applicationContext-dubbo.xml");

        IStuService stu = application.getBean(IStuService.class);
        String name = stu.queryNameById(10);
        System.out.println("消费者获得的返回值：" + name);

        while(true){

        }
    }
}

至此，一个Dubbo项目Demo就搭建好了。