springcloud引入openfeign依赖后，启动项目报错：

Unsatisfied dependency expressed through field 'vodClient'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.atguigu.eduservice.client.VodClient': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalStateException: No Feign Client for loadBalancing defined. Did you forget to include spring-cloud-starter-loadbalancer?

关键句：

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

有人问我，R老师发生甚么事了？

我一看，噢，原来是昨天，我把springcloud升级到了最新版本

我大意了啊，没有闪。

查阅一番后发现：

SpringCloud Feign在Hoxton.M2 RELEASED版本之后不再使用Ribbon，而是使用spring-cloud-loadbalancer，所以不引入spring-cloud-loadbalancer会报错

解决方法：

  1. 加入spring-cloud-loadbalancer依赖，并且在nacos中排除ribbon依赖，不然loadbalancer无效

    <dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
    <version>2.2.5.RELEASE</version>
    <exclusions>
        <exclusion>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
        </exclusion>
    </exclusions>
</dependency>
   
<!-- spring-cloud-loadbalancer -->
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-loadbalancer</artifactId>
</dependency>

  2. 或是降低SpringCloud、SpringBoot版本