Factory method ‘ribbonLoadBalancer‘ threw exception； nested exception is java.lang.IllegalArgumentEx

Factory method ‘ribbonLoadBalancer‘ threw exception； nested exception is java.lang.IllegalArgumentEx 项目版本：

springBootVersion = “2.6.1”
springCloudVersion = “2021.0.0”

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问题描述：

消费者模块通过openfeign调用提供者，消费者模块启动报错
异常日志：
Factory method ‘ribbonLoadBalancer’ threw exception; nested exception is java.lang.IllegalArgumentException: value cannot be empty

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解决方案：

//SpringCloud Feign在Hoxton.M2 RELEASED版本之后不再使用Ribbon而是使用spring-cloud-loadbalancer
implementation "org.springframework.cloud:spring-cloud-starter-loadbalancer"
//导入 spring-cloud-loadbalancer后nacos中 spring-cloud-starter-netflix-ribbon会与它冲突，造成loadbalanc包失效;或者添加配置yml关闭ribbon
implementation('com.alibaba.cloud:spring-cloud-starter-alibaba-nacos-discovery'){
	exclude group: 'org.springframework.cloud', module: 'spring-cloud-starter-netflix-ribbon'
}

不使用ribbon（默认启动）

spring:
  cloud:
    nacos:
      loadbalancer:
        ribbon:
          enabled: false