Spring Cloud Alibaba-----Nacos 注册中心实践

官网地址： https://spring-cloud-alibaba-group.github.io/github-pages/greenwich/spring-cloud-alibaba.html#_spring_cloud_alibaba_nacos_discovery

 

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如图新建3个项目，80为服务消费者，8001和8002 为服务提供者，其他module可忽律

1.父pom  添加引用

<dependencyManagement>
    <dependencies>
        <!-- spring boot-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-dependencies</artifactId>
            <version>2.2.2.RELEASE</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>

        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-alibaba-dependencies</artifactId>
            <version>2.1.0.RELEASE</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>

        ...
        ...

  </dependencies>

</dependencyManagement>

2.8001和8002 pom  添加引用

<dependencies>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>

    <!-- alibaba nacos-->
    <dependency>
        <groupId>com.alibaba.cloud</groupId>
        <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
    </dependency>


</dependencies>

3. 8001和8002 application.yml 配置

server:
  port: 8002
spring:
  application:
    name: nacos-provider
  cloud:
    nacos:
      discovery:
        #nacos 注册中心地址
        server-addr: 127.0.0.1:8848


management:
  endpoints:
    web:
      exposure:
        #暴露所有端点
        include: "*"

4.启动类要加上  @EnableDiscoveryClient

5. 8001和8002 controller

@RestController
public class ProviderController {

    @Value("${server.port}")
    private String port;

    @GetMapping("/provider/order/{id}")
    public String getOrderNum(@PathVariable("id") String id){
        String uuid= UUID.randomUUID().toString();
        return "RequestId:"+id+"-----服务器："+port+"--订单号："+uuid;
    }
}

6. 消费者80 的pom 添加依赖和yml

<dependencies>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>

    <!-- alibaba nacos-->
    <dependency>
        <groupId>com.alibaba.cloud</groupId>
        <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
    </dependency>

    <!--openfegin -->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-openfeign</artifactId>
    </dependency>
</dependencies>

server:
  port: 80
spring:
  application:
    name: nacos-consume
  cloud:
    nacos:
      discovery:
        #nacos 注册中心地址
        server-addr: 127.0.0.1:8848


management:
  endpoints:
    web:
      exposure:
        #暴露所有端点
        include: "*"

7. 消费者80采用 OpenFegin，调用provider

@Component
@FeignClient(value = "nacos-provider")
public interface ProviderService {

    @GetMapping("/provider/order/{id}")
    String getOrderNum(@PathVariable("id") String id);
}

8.消费者controller

@RestController
public class ConsumeController {

    @Autowired
    private ProviderService providerService;

    @GetMapping("/consume/order/{id}")
    public String getOrderNum(@PathVariable("id") String id){
        return providerService.getOrderNum(id);
    }
}

启动测试

 

 

由于我本地80端口冲突，临时换成8999