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
下一篇介绍eureka+feign 和 zk+dubbo 的区别