dubbo系列之springboot 调试环境搭建（一）

前言

本文是dubbo系列的第一篇，在正式讲解dubbo的源码之前，需要搭建一套dubbo的样例，用于我们阅读源码以及理解dubbo的核心功能，本文是以springboot为基础的，其他的通过xml配置的太麻烦了。

版本说明

springboot starter : 0.1.1

dubbo版本: 2.6.2

新建项目

新建项目dubbo-provider， dubbo-service，dubbo-interface，dubbo-consumer这四个项目，项目结构如下
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pom配置

dubbo-provider pom.xml

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.4.RELEASE</version>
    </parent>

    <properties>
        <dubbo-spring-boot>1.0.0</dubbo-spring-boot>
    </properties>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>1.14.8</version>
            </dependency>
        </dependencies>
    </dependencyManagement>

dubbo-service 和dubbo-consumer的pom文件相同 pom.xml

<dependencies>
        <!-- Spring Boot Dubbo 依赖 -->
        <dependency>
            <groupId>com.alibaba.boot</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>0.1.1</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>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
        <dependency>
            <artifactId>dubbo-interface</artifactId>
            <version>1.0-SNAPSHOT</version>
            <groupId>com.dubbo</groupId>
        </dependency>
    </dependencies>

dubbo-interface pom文件

<build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.5.1</version>
                <configuration>
                    <source>${java.version}</source>
                    <target>${java.version}</target>
                    <testSource>${java.version}</testSource>
                    <testTarget>${java.version}</testTarget>
                </configuration>
            </plugin>
        </plugins>
    </build>

编码

dubbo-service

启动类

@SpringBootApplication
@DubboComponentScan("com.dubbo.provider.facade")
public class ProviderApplication {


    public static void main(String[] args) {
        SpringApplication.run(ProviderApplication.class);
    }
}

application.yml文件

spring:
  application:
    name: dubbo-service
  profiles:
    active: dev
server:
  port: 7100
dubbo:
  application:
    name: dubbo-service
  registry:
    address: zookeeper://localhost:2181
  protocol:
    name: dubbo
    port: 20880

装饰层

@Service 注解是**com.alibaba.dubbo.config.annotation.Service ** 的，不是spring提供的

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/**
 * @Author 张云和
 * @Date 2018/9/11
 * @Time 14:48
 */
@Service
public class UserFacade implements UserFacadeService {


    @Resource
    private UserService userService;

    @Override
    public UserDTO getUser(Integer userId) {
        UserPO userPO = userService.getUser(userId);
        if(null==userPO){
            return null;
        }
        UserDTO userDTO = new UserDTO();
        userDTO.setUserId(userPO.getUserId());
        userDTO.setUserName(userPO.getUserName());
        return userDTO;
    }
}

UserFacadeService 为暴露出去的接口服务，在dubbo-interface中进行定义，方便消费者和生产者都能引用到

内部service层

@Service  // 这个注解是spring的注解，不是dubbo的
public class UserServiceImpl implements UserService {

    @Override
    public UserPO getUser(Integer userId) {
        // 此处没有从数据库查询
        UserPO userPO = new UserPO();
        userPO.setUserId(userId);
        userPO.setUserName("测试用户："+userId);
        userPO.setLastLoginTime(new Date());
        userPO.setPassword("password");
        return userPO;
    }
}

dubbo-consumer

启动类

@SpringBootApplication
@DubboComponentScan("com.dubbo.consumer.service")
public class ConsumerApplication {


    public static void main(String[] args) {
        SpringApplication.run(ConsumerApplication.class);
    }

}

建立一个service类，用来引用dubbo-service中提供的接口服务

@Service  // spring的
public class UserService implements UserFacadeService{

    @Reference  // dubbo的接口引用注解
    private UserFacadeService userFacadeService;

    @Override
    public UserDTO getUser(Integer userId) {

        return userFacadeService.getUser(userId);
    }
}

建立controller用来测试接口

@RestController
public class TestController {

    @Resource
    private UserService userService;

    @RequestMapping("getUser")
    public UserDTO getUser(Integer userId){

        return userService.getUser(userId);
    }
}

application.yml

spring:
  application:
    name: dubbo-consumer
  profiles:
    active: dev
server:
  port: 7101
dubbo:
  application:
    name: dubbo-consumer
  registry:
    address: zookeeper://localhost:2181
  protocol:
    name: dubbo
    port: 20880

测试

打开浏览器，访问http://localhost:7101/getUser?userId=1 ,得到结果

{"userId":1,"userName":"测试用户：1"}

本文搭建demo的项目结构是按照我正式生产环境进行搭的，所以跟其他博客上的项目结构有些区别，不是那么简单，有需要demo的可以关注公众号私信我！一起交流学习！
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