No Feign Client for loadBalancing defined. Didyou forget to include spring-cloud-starter-loadbalance_no feign client for loadbalancing defined. did you

Unexpected exception during bean creation; nested exception is java.lang.IllegalStateException: No Feign Client for loadBalancing defined. Did you forget to include spring-cloud-starter-loadbalancer?

OpenFeign报错

No Feign Client for loadBalancing defined. Did you forget to include spring-cloud-starter-loadbalancer?
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Spring Cloud版本 2020.0.3
Spring Boot版本 2.4.6

原因是因为SpringCloud Feign在Hoxton.M2 RELEASED版本之后抛弃了Ribbon，使用了spring-cloud-loadbalancer，所以我们这里还需要引入spring-cloud-loadbalancer的依赖，否则就会报错

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-loadbalancer</artifactId>
        </dependency>
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同时nacos也要排除掉ribbo

 <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-netflix-ribbon</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
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到这里问题解决