Nacos做为注册中心:如何调用其他系统的SpringCloud服务?

Oinone项目引入Nacos作为注册中心,调用外部的SpringCloud服务

Nacos可以做为注册中心,提供给Dubbo和SpringCloud等微服务框架使用。

目前Oinone的底层使用的是Dubbo进行微服务的默认协议调用,但是我们项目如果存在需要调用其他系统提供的SpringCloud服务,Oinone其实并没有限制大家去这么写代码。

可以参考Nacos或SpringCloud的官方文档,只要不存在Jar包冲突等场景,很多的扩展其实大家都可以使用。


注意!!!Nacos、SpringCloud、SpringCloudAlibaba是有依赖版本严格要求的:点击查看


具体示例:

一、项目中增加依赖

主pom引入兼容的版本:

    <dependencyManagement>
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>2.2.7.RELEASE</version> <!-- 目前兼容的版本 -->
                <type>pom</type>
                <scope>import</scope>
            </dependency>
    </dependencyManagement>

使用模块的pom引入依赖:

<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>

二、 配置 application.yml

spring:
  cloud:
    nacos:
      discovery:
        server-addr: localhost:8848
        username: nacos
        password: nacos

三、启动类添加注解

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

四、验证

创建 Feign Client 接口


import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.GetMapping;

@FeignClient(name = "nacos-demo") // 指定目标服务的名称
public interface ProviderClient {

    @GetMapping("/hello")
    String hello();
}

创建 Controller 调用 Feign Client

@RestController
public class ConsumerController {

    private final ProviderClient providerClient;

    public ConsumerController(ProviderClient providerClient) {
        this.providerClient = providerClient;
    }

    @GetMapping("/hello")
    public String hello() {
        return providerClient.hello();
    }
}

在浏览器中访问 http://localhost:8082/hello
你应该会看到服务提供者返回的响应。

Oinone社区 作者:冯, 天宇原创文章,如若转载,请注明出处:https://doc.oinone.top/kai-fa-shi-jian/13403.html

访问Oinone官网:https://www.oinone.top获取数式Oinone低代码应用平台体验

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