最近在学习dubbo，想着作一些笔记，从来没有在csnd上面写过博客，今天献出第一次，哈哈，直接上代码

一、创建父工程

<?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>2.2.2.RELEASE</version><relativePath/></parent><groupId>com.dubbo</groupId><artifactId>demo01</artifactId><version>1.0.0</version><packaging>pom</packaging><description>Spring Boot2.x 整合 dubbo</description><modules><module>api</module><module>provider</module><module>consumer</module></modules><!--统一管理依赖版本--><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding><java.version>1.8</java.version><dubbo.version>2.7.5</dubbo.version><curator.version>4.2.0</curator.version><!-- 连接zookeeper的依赖，我的zookeeper版本是3.4.14，感觉这个jar版本和zookeeper是大概保持一致的，但是引入3.4.14会报错，我试了下，从3.4.13开始就不行了 --><zookeeper.version>3.4.12</zookeeper.version></properties><!--依赖定义--><!--dependencyManagement 定义依赖版本号。子工程直接加依赖即可，不需要再次加版本号，便于统一维护版本号--><dependencyManagement><dependencies><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-spring-boot-starter</artifactId><version>${dubbo.version}</version></dependency><!-- zookeeper的api管理依赖 --><dependency><groupId>org.apache.curator</groupId><artifactId>curator-recipes</artifactId><version>${curator.version}</version></dependency><!-- zookeeper依赖 --><dependency><groupId>org.apache.zookeeper</groupId><artifactId>zookeeper</artifactId><version>${zookeeper.version}</version></dependency></dependencies></dependencyManagement><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-devtools</artifactId><scope>runtime</scope><optional>true</optional></dependency><!-- 使用该依赖，idea需要安装插件，没有用过的自行百度一下吧 --><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><optional>true</optional></dependency></dependencies>
</project>

二、创建提供者与消费者共用的api

该模块没有什么好说的，提供者和消费者都需要使用的接口api，提供者和消费者都需要引入该模块

<?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"><parent><artifactId>demo01</artifactId><groupId>com.dubbo</groupId><version>1.0.0</version></parent><modelVersion>4.0.0</modelVersion><artifactId>api</artifactId></project>

// 注解都是lombok的，真的很方便
@Data
@Builder
@NoArgsConstructor
@AllArgsConstructor(access = AccessLevel.PRIVATE)
public class User implements Serializable {private Integer id;private String name;private Integer age;
}

public interface UserService {User getUserById(Integer id);
}

三、创建提供者

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><parent><groupId>com.dubbo</groupId><version>1.0.0</version><artifactId>demo01</artifactId></parent><groupId>com.dubbo</groupId><artifactId>provider</artifactId><version>0.0.1-SNAPSHOT</version><name>provider</name><description>Demo project for Spring Boot</description><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-spring-boot-starter</artifactId></dependency><dependency><groupId>org.apache.curator</groupId><artifactId>curator-recipes</artifactId></dependency><dependency><groupId>org.apache.zookeeper</groupId><artifactId>zookeeper</artifactId></dependency><!-- 导入公共接口依赖 --><dependency><groupId>com.dubbo</groupId><artifactId>api</artifactId><version>1.0.0</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope><exclusions><exclusion><groupId>org.junit.vintage</groupId><artifactId>junit-vintage-engine</artifactId></exclusion></exclusions></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>

dubbo:application:# 应用名称name: user-providerprotocol:# 协议名称name: dubbo# 协议端口port: 20880registry:# 注册中心地址address: zookeeper://192.168.104.231:2181

@SpringBootApplication
// 提供服务的应用必须配置此项
@DubboComponentScan("com.dubbo.provider.service")
public class ProviderApplication {public static void main(String[] args) {SpringApplication.run(ProviderApplication.class, args);}}

@Component
// 该service是org.apache.dubbo.config.annotation.Service
@Service
public class UserServiceImpl implements UserService {@Overridepublic User getUserById(Integer id) {User user = User.builder().id(id).name("张三").age(20 + id).build();return user;}
}

四、创建消费者

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><parent><groupId>com.dubbo</groupId><version>1.0.0</version><artifactId>demo01</artifactId></parent><groupId>com.dubbo</groupId><artifactId>consumer</artifactId><version>0.0.1-SNAPSHOT</version><name>consumer</name><description>Demo project for Spring Boot</description><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-spring-boot-starter</artifactId></dependency><dependency><groupId>org.apache.curator</groupId><artifactId>curator-recipes</artifactId></dependency><dependency><groupId>org.apache.zookeeper</groupId><artifactId>zookeeper</artifactId></dependency><!-- 导入公共接口依赖 --><dependency><groupId>com.dubbo</groupId><artifactId>api</artifactId><version>1.0.0</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope><exclusions><exclusion><groupId>org.junit.vintage</groupId><artifactId>junit-vintage-engine</artifactId></exclusion></exclusions></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>

# 端口
server:port: 8081
dubbo:application:name: user-consumerprotocol:name: dubboport: 20880registry:address: zookeeper://192.168.104.231:2181

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

@RestController
@RequestMapping("/user")
public class ConsumerController {@Referenceprivate UserService userService;@GetMapping("/{id}")public User getUserById(@PathVariable int id) {return userService.getUserById(id);}
}

五、启动并访问

先启动provider，启动结果如下

启动consumer，启动结果如下

浏览器访问：http://localhost:8081/user/4

好了，到此就完成了最基本的springboot与dubbo的整合,更多的dubbo的api请查阅 dubbo官方文档