dubbo4：配置与测试

一、服务提供者配置与测试

    （1）在服务提供者中引入依赖

<!--        dubbo依赖-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>dubbo</artifactId>
            <version>2.6.8</version>
        </dependency>
<!--        注册中心使用的是zookeeper，引入操作zookeeper的客户端 -->
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-framework</artifactId>
            <version>5.1.0</version>
        </dependency>

（2）配置服务提供者

    创建provider.xml文件。

<?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">

<!--    指定当前服务应用的名字 -->
    <dubbo:application name="user-service-provider"></dubbo:application>
<!--    指定注册中心的位置-->
    <dubbo:registry address="zookeeper://127.0.0.1:2181"></dubbo:registry>
<!--    指定通信规则（通信协议、通信端口）-->
    <dubbo:protocol name="dubbo" port="20080"></dubbo:protocol>
<!--    暴露服务 ref指向服务真正实现-->
    <dubbo:service interface="com.buba.service.UserService" ref="UserServiceImpl"></dubbo:service>

    <bean id="UserServiceImpl" class="com.buba.service.impl.UserServiceImpl"></bean>
</beans>

（3）测试

    编写测试代码：

package com.buba;

import org.springframework.context.support.ClasspathXmlApplicationContext;

public class Provider {
    public static void main(String[] args) throws Exception {
        ClasspathXmlApplicationContext context = new ClasspathXmlApplicationContext(new String[]{"provider.xml"});
        context.start();
        system.in.read(); // 按任意键退出
    }
}

   启动zookeeper服务，然后启动zookeeper客户端，最后执行测试代码。

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二、服务消费者配置与测试

（1）引入依赖

<!--        dubbo依赖-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>dubbo</artifactId>
            <version>2.6.8</version>
        </dependency>
<!--        注册中心使用的是zookeeper，引入操作zookeeper的客户端 -->
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-framework</artifactId>
            <version>5.1.0</version>
        </dependency>

（2）消费者配置文件

<?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">


    <!--    指定当前服务应用的名字 -->
    <dubbo:application name="order-service-consumer"></dubbo:application>
    <!--    指定注册中心的位置-->
    <dubbo:registry address="zookeeper://127.0.0.1:2181"></dubbo:registry>
    <!--    声明需要调用远程服务的接口，生成远程服务代理-->
    <dubbo:reference interface="com.buba.service.UserService" id="userService"></dubbo:reference>

    <bean class="com.buba.service.impl.OrderServiceImpl" id="orderServiceImpl">
        <property name="userService" ref="userService"></property>
    </bean>
</beans>

（3）补全业务层的实现

package com.buba.service.impl;

import com.buba.pojo.UserAddress;
import com.buba.service.OrderService;
import com.buba.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;

import java.util.List;

public class OrderServiceImpl implements OrderService {

    private UserService userService;

    @Override
    public void initOrder(String userId) {
        List<UserAddress> userAddressList = userService.getUserAddressList("1");
        userAddressList.forEach(System.out::println);
    }

    public void setUserService(UserService userService) {
        this.userService = userService;
    }
}

（4）编写测试类执行测试

package com.buba.controller;

import com.buba.service.OrderService;
import org.springframework.context.support.ClasspathXmlApplicationContext;

import java.io.IOException;

public class Test {
    public static void main(String[] args) throws IOException {
        ClasspathXmlApplicationContext classpathXmlApplicationContext = new ClasspathXmlApplicationContext("consumer.xml");
        OrderService bean = classpathXmlApplicationContext.getBean(OrderService.class);
        bean.initOrder("1");
        system.in.read();
    }
}

    在监控中心可以看到服务关系。