springcloud中使用dubbo开发rpc服务及调用

spring cloud中基于springboot开发的微服务，是基于http的rest接口，也能够开发基于dubbo的rpc接口。

一，建立goodsService模块

　　1， 在建立的goodsService模块中再建立goodsServiceApi和goodsServiceServer模块

　　2，在oodsServiceApi模块中定义接口 ，goodsServiceServer用于接口实现

　　3，goodsServiceServer模块中pom文件引入相关依赖

<dependencies>
        <dependency>
            <groupId>net.biui</groupId>
            <artifactId>goods-service-api</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-dubbo</artifactId>
        </dependency>
    </dependencies>

　　4，goodsServiceServer中添加配置

spring: application: name: goods-service cloud: nacos: discovery: server-addr: 127.0.0.1:8848 namespace: c22e5019-0bee-43b1-b80b-fc0b9d847501 dubbo: registry: address: nacos://127.0.0.1:8848 scan: base-packages: net.biui.impl protocol: port: 20881 name: dubbo

　　5，goodsServiceServer编写接口实现

@org.apache.dubbo.config.annotation.Service public class GoodsImpl implements GoodsApi { public String getGoodsName() { return "商品一"; } }

　　6，goodsServiceServer编写启动类

@SpringBootApplication @EnableDiscoveryClient public class GoodsServiceServerApplication { public static void main(String[] args) { SpringApplication.run(GoodsServiceServerApplication.class, args); } }

启动后，dubbo服务会自动注册到nacos服务发现中心

二，建立调用dubbo服务的模块

　　1，new -> module -> 填写信息 -> finish

　　2，添加pom依赖

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-dubbo</artifactId>
        </dependency>
        <dependency>
            <groupId>net.biui</groupId>
            <artifactId>goods-service-api</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>

　　3，添加配置

spring: application: name: demo-dubbo cloud: nacos: discovery: server-addr: 127.0.0.1:8848 namespace: c22e5019-0bee-43b1-b80b-fc0b9d847501

　　4，编写controller调用dubbo服务

@RestController @RequestMapping("/demo") public class demoController { @org.apache.dubbo.config.annotation.Reference GoodsApi goodsApi; @GetMapping("/test") public String test(){ return "test " + goodsApi.getGoodsName(); } }

　　5，编写启动类

@SpringBootApplication @EnableDiscoveryClient public class demoDubboApplication { public static void main(String[] args) { SpringApplication.run(demoDubboApplication.class, args); } }

启动后，demo-dubbo服务也会自动注册到nacos（由于nacos.register.enable默认为true，即表明自动注册，能够只订阅，不注册），对应接口返回了dubbo服务返回的信息！