springmvc+Dubbo+zookeeper分布式服务

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引入依赖

<dependency>
	<groupId>org.apache.zookeeper</groupId>
	<artifactId>zookeeper</artifactId>
	<version>3.4.9</version>
</dependency>
<!-- dubbo -->
<dependency>
	<groupId>org.apache.dubbo</groupId>
	<artifactId>dubbo</artifactId>
	<version>2.7.3</version>
</dependency>
<dependency>
	<groupId>com.101tec</groupId>
	<artifactId>zkclient</artifactId>
	<version>0.10</version>
</dependency>
<dependency>
	<groupId>org.javassist</groupId>
	<artifactId>javassist</artifactId>
	<version>3.24.1-GA</version>
</dependency>
<dependency>
	<groupId>org.apache.curator</groupId>
	<artifactId>curator-framework</artifactId>
	<version>2.8.0</version>
</dependency>
<dependency>
	<groupId>org.apache.curator</groupId>
	<artifactId>curator-recipes</artifactId>
	<version>2.8.0</version>
</dependency>
<dependency>
	<groupId>org.apache.curator</groupId>
	<artifactId>curator-client</artifactId>
	<version>2.8.0</version>
</dependency>
<dependency>
	<groupId>io.netty</groupId>
	<artifactId>netty-all</artifactId>
	<version>4.0.35.Final</version>
</dependency>

提供者（消费者）

<?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">
	<!-- 定义了提供方应用信息，用于计算依赖关系。在dubbo-admin 或 dubbo-monitor 会显示这个名字，方便识别 -->
	<dubbo:application name="admin-provider" owner="admin" organization="dubbox"/>
	<!-- 使用zookeeper 注册中心暴露服务，注意要先开启 zookeeper -->
	<dubbo:registry address="zookeeper://127.0.0.1:2181"/>
	<!-- 用dubbo协议在20880端口暴露服务 ，端口唯一性，否则会提示被占用 -->
	<dubbo:protocol name="dubbo" port="20880"/>
	<!-- 用dubbo 协议实现定义好的 api 接口 -->
	<dubbo:service interface="com.sun.dubbo.service.IUserService" ref="userService" protocol="dubbo"/>
	<!-- 具体实现接口的bean -->
	<bean id="userService" class="com.sun.dubbo.service.UserServiceImpl"/>	
</beans>

需要暴露的接口API

/**
 * dubbo 接口
 * @author Andy
 * @date 2019年12月29日
 */
public interface IUserService {
	
	public User getUser();

}

接口具体实现

/**
 * @Description: 服务提供者接口的实现
 * @author Andy
 * @date 2019年12月29日
 */
public class UserServiceImpl implements IUserService{
	public User getUser() {
		User user = new User();
		user.setName("andy");
		user.setAge(25);
		user.setJob("JAVA软件开发");
		user.setSex("男");
		return user;
	}
}

生产者

<?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">
	<!-- 定义了提供方应用信息，用于计算依赖关系。在dubbo-admin 或 dubbo-monitor 会显示这个名字，方便识别 -->
	<dubbo:application name="admin-consumer" owner="demo" organization="dubbox"/>
	<!-- 向zookeeper 订阅provider 的地址，由zookeeper 定时推送 -->
	<dubbo:registry address="zookeeper://127.0.0.1:2181"/>
	<!-- 使用dubbo 协议调用定义好的 api 接口 -->
	<dubbo:reference id="userService" interface="com.sun.dubbo.service.IUserService"/>	
</beans>

API测试类

public class Test {

	public static void main(String[] args) {
		ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
	    context.start();
	    IUserService demoService = context.getBean(IUserService.class);

	    System.out.println(demoService.getUser().toString());
	}
}