声明式远程调用OpenFeign（微服务调用微服务）

通过注册中心nacos进行远程调用

 

如何远程调用别的服务

   1引入依赖

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

2编写一个调用远程的接口，给springcloud，在接口中编写需要调用远程服务的某某请求

3开启feign远程调用功能@EnableFeignClients

4. 别的服务

 

 

 

报错，缺loadbalancer

Caused by: java.lang.IllegalStateException: No Feign Client for loadBalancing defined. Did you forget to include spring-cloud-starter-loadbalancer?
参考
https://blog.csdn.net/weixin_45729934/article/details/110310119

会员服务

Did you forget to include spring-cloud-starter-loadbalancer?

spring cloud版本过高之后，没有包含负载均衡的包

 

 

测试代码

 

最终会员微服务 调用   优惠券服务 远程调用成功

{"msg":"success","code":0,
"优惠券":[{"id":null,"couponType":null,"couponImg":null,"couponName":"满100减50","num":null,"amount":null,"perLimit":null,"minPoint":null,"startTime":null,
"endTime":null,"useType":null,"note":null,"publishCount":null,"useCount":null,"receiveCount":null,"enableStartTime":null,"enableEndTime":null,"code":null,
"memberLevel":null,"publish":null}],
"member":{"id":null,"levelId":null,"username":null,"password":null,"nickname":"塔吉克","mobile":null,"email":null,"header":null,"gender":null,"birth":null,
"city":null,"job":null,"sign":null,"sourceType":null,"integration":null,"growth":null,"status":null,"createTime":null}}