基于dubbo rpc框架集成nacos注册中心(极简案例)-阿里云开发者社区

基于dubbo rpc框架集成nacos注册中心(极简案例)

2021-08-30 407

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简介： 基于dubbo rpc框架集成nacos注册中心(极简案例)

1.版本说明：

Spring Cloud Greenwich.SR2
Spring Cloud Alibaba 2.1.2.RELEASE
Spring Boot 2.1.1.RELEASE

2.项目结构介绍

demo-dubbo-nacos-api 服务api接口
demo-dubbo-nacos-provider 服务提供者
demo-dubbo-nacos-consumer 服务消费者

3.项目依赖

3.0 demo-dubbo-nacos 的 pom.xml

<?xmlversion="1.0" encoding="UTF-8"?><projectxmlns="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>com.daobili</groupId><artifactId>demo-dubbo-nacos</artifactId><version>Beikezhan.M1</version><modules><module>demo-dubbo-nacos-provider</module><module>demo-dubbo-nacos-api</module><module>demo-dubbo-nacos-consumer</module></modules><packaging>pom</packaging></project>

3.1 demo-dubbo-nacos-api 的 pom.xml

<?xmlversion="1.0" encoding="UTF-8"?><projectxmlns="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>demo-dubbo-nacos</artifactId><groupId>com.daobili</groupId><version>Beikezhan.M1</version></parent><modelVersion>4.0.0</modelVersion><artifactId>demo-dubbo-nacos-api</artifactId></project>

3.2 demo-dubbo-nacos-provider 的 pom.xml

<?xmlversion="1.0" encoding="UTF-8"?><projectxmlns="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>demo-dubbo-nacos</artifactId><groupId>com.daobili</groupId><version>Beikezhan.M1</version></parent><modelVersion>4.0.0</modelVersion><artifactId>demo-dubbo-nacos-provider</artifactId><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><maven.compiler.source>1.8</maven.compiler.source><maven.compiler.target>1.8</maven.compiler.target><spring-cloud.version>Greenwich.SR2</spring-cloud.version></properties><!--版本依赖：SpringCloud Greenwich.SR2SpringCloud Alibaba 2.1.1.RELEASESpringBoot 2.1.1.RELEASE--><dependencyManagement><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-dependencies</artifactId><version>${spring-cloud.version}</version><type>pom</type><scope>import</scope></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-dependencies</artifactId><version>2.1.1.RELEASE</version><type>pom</type><scope>import</scope></dependency><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-alibaba-dependencies</artifactId><version>2.1.1.RELEASE</version><type>pom</type><scope>import</scope></dependency></dependencies></dependencyManagement><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter</artifactId><version>2.1.2.RELEASE</version><exclusions><exclusion><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-context</artifactId></exclusion></exclusions></dependency><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-starter-dubbo</artifactId><version>2.1.2.RELEASE</version></dependency><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-alibaba-nacos-discovery</artifactId><version>2.1.1.RELEASE</version><exclusions><exclusion><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-context</artifactId></exclusion></exclusions></dependency><dependency><groupId>com.daobili</groupId><artifactId>demo-dubbo-nacos-api</artifactId><version>Beikezhan.M1</version></dependency><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-context</artifactId><version>2.1.1.RELEASE</version></dependency></dependencies></project>

3.3 demo-dubbo-nacos-consumer 的 pom.xml

<?xmlversion="1.0" encoding="UTF-8"?><projectxmlns="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>demo-dubbo-nacos</artifactId><groupId>com.daobili</groupId><version>Beikezhan.M1</version></parent><modelVersion>4.0.0</modelVersion><artifactId>demo-dubbo-nacos-consumer</artifactId><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><maven.compiler.source>1.8</maven.compiler.source><maven.compiler.target>1.8</maven.compiler.target></properties><dependencyManagement><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-dependencies</artifactId><version>${spring-cloud.version}</version><type>pom</type><scope>import</scope></dependency></dependencies></dependencyManagement><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId><version>2.1.3.RELEASE</version></dependency><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter</artifactId><version>2.1.2.RELEASE</version></dependency><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-starter-dubbo</artifactId><version>2.1.2.RELEASE</version></dependency><dependency><groupId>com.daobili</groupId><artifactId>demo-dubbo-nacos-api</artifactId><version>Beikezhan.M1</version></dependency><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-alibaba-nacos-discovery</artifactId><version>2.1.1.RELEASE</version><exclusions><exclusion><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-context</artifactId></exclusion></exclusions></dependency><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-context</artifactId><version>2.1.1.RELEASE</version></dependency><dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpclient</artifactId><version>4.5.5</version></dependency></dependencies></project>

4.项目配置

4.0 demo-dubbo-nacos-api 的 application.yml

无

4.1 demo-dubbo-nacos-provider 的 application.yml

server:
  port: 8866
spring:
  application:
    # 应用名称
    name: demo-dubbo-nacos-provider
  # 配置 Nacos 注册中心
  cloud:
    nacos:
      discovery:
        # Nacos 服务器地址-单机版
        server-addr: 127.0.0.1:8848
dubbo:
  # 提供方应用信息，用于计算依赖关系
  application:
    name: demo-dubbo-nacos-provider
  # 扫描需要暴露的服务，可以被 @EnableDubbo 注解替代
  scan:
    base-packages: com.daobili.provider
  # 用 dubbo 协议在 20880 端口暴露服务
  protocol:
    name: dubbo
    port: 20880
  # 使用 nacos 注册中心暴露服务地址
  registry:
    protocol: nacos
    address: spring-cloud://localhost

4.2 demo-dubbo-nacos-consumer 的 application.yml

server:
  port: 8867
spring:
  application:
    # 应用名称
    name: demo-dubbo-nacos-consumer
  # 配置 Nacos 注册中心
  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848
dubbo:
  application:
    name: demo-dubbo-nacos-consumer
  cloud:
    # 用于消费者订阅提供方的应用名称列表
    subscribed-services: demo-dubbo-nacos-provider
  scan:
    base-packages: com.daobili.provider

5.项目测试代码

5.0 demo-dubbo-nacos-api 的 DemoService

publicinterfaceDemoService {
Stringgreet(Stringname);
}

5.1 demo-dubbo-nacos-provider 的 DemoServiceImpl

@Service(
version="1.0.0",
interfaceClass=DemoService.class,
cluster="failfast",
loadbalance="roundrobin")
publicclassDemoServiceImplimplementsDemoService {
@OverridepublicStringgreet(Stringname) {
return"hello, "+name;
    }
}

5.2 demo-dubbo-nacos-consumer 的 TestController

@RestControllerpublicclassTestController {
@Reference(
version="1.0.0",
interfaceClass=DemoService.class,
cluster="failfast"    )
privateDemoServicedemoService;
@GetMapping("/greet")
publicStringgreet(Stringname) {
returndemoService.greet(name);
    }
}

6.项目启动类

6.0 demo-dubbo-nacos-provider 的 ProviderApplication

@SpringBootApplicationpublicclassProviderApplication {
publicstaticvoidmain(String[] args) {
SpringApplication.run(ProviderApplication.class, args);
    }
}

6.1 demo-dubbo-nacos-consumer 的 ConsumerApplication

@SpringBootApplicationpublicclassConsumerApplication {
publicstaticvoidmain(String[] args) {
SpringApplication.run(ConsumerApplication.class, args);
    }
}

6.测试

启动本地Nacos服务器，访问`http://localhost:8848/nacos/ `

控制台显示如下：

依次启动`demo-dubbo-nacos-provider`、`demo-dubbo-nacos-consumer`

* 3.调试测试接口 http://localhost:8867/greet?name=bamaw