springboot+zookeeper+dubbo实现服务注册与发现

springboot+zookeeper+dubbo实现服务注册与发现

首先我们看下项目结构图

生产者模块结构图

pom

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.1.2.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.waf</groupId>
	<artifactId>springboot-dubbo-producer</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>springboot-dubbo-producer</name>
	<description>Demo project for Spring Boot</description>

	<properties>
		<java.version>1.8</java.version>
	</properties>

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>

		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>dubbo</artifactId>
			<version>2.5.3</version>
			<exclusions>
				<exclusion>
					<groupId>org.springframework</groupId>
					<artifactId>spring</artifactId>
				</exclusion>
			</exclusions>
		</dependency>
		<dependency>
			<groupId>org.apache.zookeeper</groupId>
			<artifactId>zookeeper</artifactId>
			<version>3.4.6</version>
			<exclusions>
				<exclusion>
					<groupId>org.slf4j</groupId>
					<artifactId>slf4j-log4j12</artifactId>
				</exclusion>
				<exclusion>
					<groupId>log4j</groupId>
					<artifactId>log4j</artifactId>
				</exclusion>
			</exclusions>
		</dependency>
		<dependency>
			<groupId>com.github.sgroschupf</groupId>
			<artifactId>zkclient</artifactId>
			<version>0.1</version>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-autoconfigure</artifactId>
			<version>2.1.2.RELEASE</version>
		</dependency>
	</dependencies>


	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>

</project>

application.properties 配置一个端口号server.port=8888

producer.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 ">
    <!-- 消费方应用名，用于计算依赖关系，不是匹配条件，不要与提供方一样 -->
    <dubbo:application name="dubbo-provider" />
    <!-- 使用zookeeper作为注册中心 -->
    <dubbo:registry  protocol="zookeeper" address="zookeeper://192.168.0.0:2181" />
    <!-- 生成远程服务代理，可以和本地bean一样使用demoService -->
    <bean id="producerService" class="com.waf.producer.service.impl.DubboProducerServiceImpl"></bean>
    <dubbo:service interface="com.waf.producer.service.DubboProducerService" ref="producerService"></dubbo:service>
</beans>

接口与实现
 

package com.waf.producer.service;

public interface DubboProducerService {

    String queryProducerInfo();
}



package com.waf.producer.service.impl;

import com.waf.producer.service.DubboProducerService;
import org.springframework.stereotype.Service;

@Service
public class DubboProducerServiceImpl implements DubboProducerService {
    @Override
    public String queryProducerInfo() {
        return "获取生产者的接口数据";
    }
}

最后启动类
 

package com.waf.producer;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ImportResource;

@ImportResource("classpath:producer.xml")
@SpringBootApplication
public class SpringbootDubboProducerApplication {

	public static void main(String[] args) {

		SpringApplication.run(SpringbootDubboProducerApplication.class, args);
		System.out.println("启动服务");
	}

}

登录dubbo-admin可以看到提供者中有我们发布接口的实例

可以看到成功发布了，zookeeper中也有此节点信息（ephemeralOwner = ......... 是临时节点 ephemeralOwner =0x0持久化节点）如果客户端断开会话此临时节点的生命周期就失效

再来看消费者
pom一定要引入生产者jar包

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.1.2.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.waf</groupId>
	<artifactId>springboot-dubbo-consumer</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>springboot-dubbo-consumer</name>
	<description>Demo project for Spring Boot</description>

	<properties>
		<java.version>1.8</java.version>
	</properties>

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>

        <!-- 引入生产者jar 包-->
		<dependency>
			<groupId>com.waf</groupId>
			<artifactId>springboot-dubbo-producer</artifactId>
			<version>0.0.1-SNAPSHOT</version>
		</dependency>

		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>dubbo</artifactId>
			<version>2.5.3</version>
			<exclusions>
				<exclusion>
					<groupId>org.springframework</groupId>
					<artifactId>spring</artifactId>
				</exclusion>
			</exclusions>
		</dependency>
		<dependency>
			<groupId>org.apache.zookeeper</groupId>
			<artifactId>zookeeper</artifactId>
			<version>3.4.6</version>
			<exclusions>
				<exclusion>
					<groupId>org.slf4j</groupId>
					<artifactId>slf4j-log4j12</artifactId>
				</exclusion>
				<exclusion>
					<groupId>log4j</groupId>
					<artifactId>log4j</artifactId>
				</exclusion>
			</exclusions>
		</dependency>
		<dependency>
			<groupId>com.github.sgroschupf</groupId>
			<artifactId>zkclient</artifactId>
			<version>0.1</version>
		</dependency>
	</dependencies>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>

</project>

这是结构图

consumer.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 ">
    <!-- 消费方应用名，用于计算依赖关系，不是匹配条件，不要与提供方一样 -->
    <dubbo:application name="dubbo-consumer" />
    <!-- 使用zookeeper作为注册中心 -->
    <dubbo:registry  protocol="zookeeper" address="zookeeper://192.168.0.0:2181" />
    <!-- 生成远程服务代理，可以和本地bean一样使用demoService -->
    <dubbo:reference id="producerService" interface="com.waf.producer.service.DubboProducerService"></dubbo:reference>
</beans>

启动类
 

package com.waf.consumer;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ImportResource;

@ImportResource("classpath:consumer.xml")
@SpringBootApplication
public class SpringbootDubboConsumerApplication {

	public static void main(String[] args) {

		SpringApplication.run(SpringbootDubboConsumerApplication.class, args);
		System.out.println("注册消费者");
	}

}

接口和实现类。server层调用生产者服务
 

package com.waf.consumer.service;

public interface DubboConsumerService {

    String queryConsumerInfo();
}




package com.waf.consumer.service.impl;

import com.waf.consumer.service.DubboConsumerService;
import com.waf.producer.service.DubboProducerService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class DubboConsumerServiceImpl implements DubboConsumerService {

    //此处调用生产者暴露服务的接口
    @Autowired
    DubboProducerService producerService;

    @Override
    public String queryConsumerInfo() {
        return producerService.queryProducerInfo();
    }
}

控制层访问案例
 

package com.waf.consumer.controller;

import com.waf.consumer.service.DubboConsumerService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/dubbo-server")
public class ConsumerController {

    @Autowired
    private DubboConsumerService consumerService;

    @RequestMapping("/test")
    public String queryInfo(){
        return consumerService.queryConsumerInfo();
    }
}

启动消费者后访问localhost:8080/dubbo-server/test 一定会出现这句话

在看看dubbo-admin控制台

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