1、java.lang.AbstractMethodError:org.springframework.cloud.netflix.ribbon.RibbonLoadBalancerClient.choose

出现这个问题是没有loadbalancer，但是nacos中ribbon会造成loadbalanc包失效

<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
    <exclusions>
        <exclusion>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
        </exclusion>
    </exclusions>
</dependency>
              
<dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-loadbalancer</artifactId>
      <version>2.2.2.RELEASE</version>
</dependency>

2、No Feign Client for loadBalancing defined. Did you forget to include spring-cloud-starter-loadbalancer?

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

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