Dubbo 2.7 整合Spring(xml形式)

Posted 醋酸菌HaC

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Dubbo整合Spring(xml形式)

Dubbo 在 spring xml 形式的配置要比SpringBoot 注解形式的配置 可读性要更友好。

springboot项目也推荐使用 xml 形式配置 dubbo

因为Dubbo 是可以具体到方法级别的,使用xml配置起来更直观。(官方也推荐)

本文就来使用 Dubbo 2.7 整合 Spring。

项目结构如下:

父类项目依赖 pom.xml

	<properties>
        <dubbo.version>2.7.13</dubbo.version>
        <spring.version>4.3.16.RELEASE</spring.version>
    </properties>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-framework-bom</artifactId>
                <version>$spring.version</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>org.apache.dubbo</groupId>
                <artifactId>dubbo-bom</artifactId>
                <version>$dubbo.version</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <dependency>
                <groupId>org.apache.dubbo</groupId>
                <artifactId>dubbo-dependencies-zookeeper</artifactId>
                <version>$dubbo.version</version>
                <type>pom</type>
            </dependency>

        </dependencies>
    </dependencyManagement>

1、创建api

创建dubbo-samples-xml-api项目,定义一个接口:

OrderService.java

public interface OrderService 
   List<Order> getOrderInfo(long orderId);

Order.java:

@Data
@NoArgsConstructor
@AllArgsConstructor
public class Order implements Serializable 

    private static final long serialVersionUID = -3757842094691885448L;
    Long orderId;
    String orderName;


2、创建provider

dubbo-provider.xml:

<context:component-scan base-package="com.dubbo.impl"/>
<dubbo:application name="dubbo-samples-provider-xml"/>
<dubbo:registry address="zookeeper://$zookeeper.address:127.0.0.1:$zookeeper.port:2181"/>

<dubbo:protocol name="dubbo" port="20883"/>
<dubbo:service interface="com.dubbo.api.OrderService" ref="orderServiceImpl" protocol="dubbo" group="one"/>

OrderServiceImpl.java ,实现接口:

@Service("orderServiceImpl")
@Slf4j
public class OrderServiceImpl implements OrderService 

    @Override
    public List<Order> getOrderInfo(long orderId) 
        
        List<Order> list = new ArrayList<>();
        Order order1 = new Order();
        order1.setOrderId(199L);
        order1.setOrderName("MacBook Pro 13");

        Order order2 = new Order();
        order2.setOrderId(200L);
        order2.setOrderName("RTX 2060");

        list.add(order1);
        list.add(order2);

        return list;
    

启动类Provider:

public class Provider 
    public static void main(String[] args) throws Exception 
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[]"spring/dubbo-provider.xml");
        context.start();
        System.out.println("provider service start ......");
        new CountDownLatch(1).await();
    

3、创建consumer

dubbo-consumer.xml:

<dubbo:application name="dubbo-samples-consumer-xml"/>

<dubbo:registry address="zookeeper://$zookeeper.address:127.0.0.1:$zookeeper.port:2181"/>

<dubbo:reference id="orderServiceImpl" check="false"
interface="com.dubbo.api.OrderService" protocol="dubbo" group="one"/>

实现类 OrderServiceImpl:

@Service("orderServiceImpl")
@Slf4j
public class OrderServiceImpl implements OrderService 

    @Override
    public List<Order> getOrderInfo(long orderId) 
        log.info("OrderServiceImpl方法");
        log.info("request from consumer: ", RpcContext.getContext().getRemoteAddress());
        log.info("protocol: ",RpcContext.getContext().getProtocol());
        log.info("response from provider: ",RpcContext.getContext().getLocalAddress());
        List<Order> list = new ArrayList<>();
        Order order1 = new Order();
        order1.setOrderId(199L);
        order1.setOrderName("MacBook Pro 13");

        Order order2 = new Order();
        order2.setOrderId(200L);
        order2.setOrderName("RTX 2060");

        list.add(order1);
        list.add(order2);

        return list;
    

启动类Consumer:

/**
 * @author 醋酸菌HaC | WebSite📶 : https://rain.baimuxym.cn
 * @date 2021/11/22
 * @Description consumer启动类,按下enter键
 */
public class Consumer 
    public static void main(String[] args) throws Exception 
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[]"spring/dubbo-consumer.xml");
        context.start();
        System.out.println("consumer start.....");
//        dubbo
        OrderService orderService1 = context.getBean("orderServiceImpl", OrderService.class);
        while (true) 
            System.in.read();
            RpcContext rpcContext = RpcContext.getContext();
            System.out.println("SUCCESS: got order list " + orderService1.getOrderInfo(1L));
        
    

4、测试

启动 provider,打开dubbo-admin(需要自行搭建,请参考:),可以看到provider已经注册进来了:

启动consumer,按下enter键。

consumer日志:

SUCCESS: got order list [Order(orderId=199, orderName=MacBook Pro 13), Order(orderId=200, orderName=RTX 2060)]

privider日志:

2021-12-23 11:42.35 [DubboServerHandler-172.16.44.48:20883-thread-2] -- [ INFO] - impl.OrderServiceImpl: OrderServiceImpl方法
2021-12-23 11:42.35 [DubboServerHandler-172.16.44.48:20883-thread-2] -- [ INFO] - impl.OrderServiceImpl: request from consumer: /172.16.44.48:47287
2021-12-23 11:42.35 [DubboServerHandler-172.16.44.48:20883-thread-2] -- [ INFO] - impl.OrderServiceImpl: protocol: null
2021-12-23 11:42.35 [DubboServerHandler-172.16.44.48:20883-thread-2] -- [ INFO] - impl.OrderServiceImpl: response from provider: 172.16.44.48:20883

5、总结

Dubbo是支持多种协议的,以上我演示的是 dubbo(默认)协议。除了该协议,dubbo也支持其他协议,专栏其他文章我做了dubbo、hessian、rest协议的演示:

相对SpringBoot的yml、properties配置,xml的配置更清晰明了,个人也推荐使用xml的方式配置。

项目的地址已经上传到github:https://github.com/DogerRain/dubbo-samples-test


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