本章节建立生产者和消费者来演示dubbo的demo
生产者:springboot-dubbo-provider 和 消费者:springboot-dubbo-consumer 工程配置详解
Apache官方Demo:https://github.com/alibaba/dubbo-spring-boot-starter
阿里巴巴官方Demo:https://github.com/apache/incubator-dubbo-spring-boot-project
GitHub 上代码: https://github.com/JeffLi1993/springboot-learning-example。
springboot-dubbo-provider:
1.pom.xml导入依赖 :
pom.xml 中依赖了 spring-boot-starter-dubbo 工程,该项目地址是 https://github.com/teaey/spring-boot-starter-dubbo。
<?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> <groupId>springboot</groupId>
<artifactId>springboot-dubbo-server</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>springboot-dubbo 服务端:: 整合 Dubbo/ZooKeeper 详解 SOA 案例</name> <!-- Spring Boot 启动父依赖 -->
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.1.RELEASE</version>
</parent> <properties>
<dubbo-spring-boot>1.0.0</dubbo-spring-boot>
</properties> <dependencies> <!-- Spring Boot Dubbo 依赖 -->
<dependency>
<groupId>io.dubbo.springboot</groupId>
<artifactId>spring-boot-starter-dubbo</artifactId>
<version>${dubbo-spring-boot}</version>
</dependency> <!-- Spring Boot Web 依赖 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency> <!-- Spring Boot Test 依赖 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency> <!-- Junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
</dependencies>
</project>
2.application.properties 配置
server.port=8080
## Dubbo 配置
spring.dubbo.application.name=provider
spring.dubbo.registry.address=zookeeper://127.0.0.1:2181
spring.dubbo.protocol.name=dubbo
spring.dubbo.protocol.port=20880
spring.dubbo.scan=org.spring.springboot.dubbo
// 注册为 Dubbo 服务
@Service(version = "1.0.0")
public class CityDubboServiceImpl implements CityDubboService { public City findCityByName(String cityName) {
return new City(1L,2L,"温岭","是我的故乡");
}
}
springboot-dubbo-consumer:
1.application.properties 配置
## 避免和 server 工程端口冲突
server.port=8081 ## Dubbo 服务消费者配置
spring.dubbo.application.name=consumer
spring.dubbo.registry.address=zookeeper://127.0.0.1:2181
spring.dubbo.scan=org.spring.springboot.dubbo
2.CityDubboConsumerService.java 城市 Dubbo 服务消费者
@Component
public class CityDubboConsumerService { @Reference(version = "1.0.0")
CityDubboService cityDubboService; public void printCity() {
String cityName="温岭";
City city = cityDubboService.findCityByName(cityName);
System.out.println(city.toString());
}
}
这里将 CityDubboConsumerService 注入 Spring 容器,是为了更方便的获取该 Bean,然后验证这个 Dubbo 调用是否成功。
3.ClientApplication.java 客户端启动类
@SpringBootApplication
public class ClientApplication { public static void main(String[] args) {
// 程序启动入口
// 启动嵌入式的 Tomcat 并初始化 Spring 环境及其各 Spring 组件
ConfigurableApplicationContext run = SpringApplication.run(ClientApplication.class, args);
CityDubboConsumerService cityService = run.getBean(CityDubboConsumerService.class);
cityService.printCity();
}
}
解释下这段逻辑,就是启动后从 Bean 容器中获取城市 Dubbo 服务消费者 Bean。然后调用该 Bean 方法去验证 Dubbo 调用是否成功。
先启动生产者provider,然后启动消费者consumer,控制台打印数据,则调用成功!