已解决集成feign报错:No Feign Client for loadBalancing defined. Did you forget to include spring

报错:No Feign Client for loadBalancing defined. Did you forget to include spring"/>

已解决集成feign报错:No Feign Client for loadBalancing defined. Did you forget to include spring

错误描述

在使用最新版本springboot3.0和spring-cloud2022.0.1中引入feignclient时出现了以下错误,FeignClient无法被创建

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'couponInfoController': Unsatisfied dependency expressed through field 'couponUseService': Error creating bean with name 'couponUseServiceImpl': Unsatisfied dependency expressed through field 'userInfoClient': Error creating bean with name 'com.fate.client.user.UserInfoClient': FactoryBean threw exception on object creationat org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:712) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:692) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:133) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:481) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1397) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:598) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:521) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:326) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:961) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:915) ~[spring-context-6.0.4.jar:6.0.4]at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:584) ~[spring-context-6.0.4.jar:6.0.4]at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:146) ~[spring-boot-3.0.2.jar:3.0.2]at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:730) ~[spring-boot-3.0.2.jar:3.0.2]at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:432) ~[spring-boot-3.0.2.jar:3.0.2]at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) ~[spring-boot-3.0.2.jar:3.0.2]at org.springframework.boot.SpringApplication.run(SpringApplication.java:1302) ~[spring-boot-3.0.2.jar:3.0.2]at org.springframework.boot.SpringApplication.run(SpringApplication.java:1291) ~[spring-boot-3.0.2.jar:3.0.2]at com.fate.service.activity.ActivityApplication.main(ActivityApplication.java:23) ~[classes/:na]
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'couponUseServiceImpl': Unsatisfied dependency expressed through field 'userInfoClient': Error creating bean with name 'com.fate.client.user.UserInfoClient': FactoryBean threw exception on object creationat org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:712) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:692) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:133) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:481) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1397) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:598) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:521) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:326) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:254) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1405) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1325) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:709) ~[spring-beans-6.0.4.jar:6.0.4]... 20 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.fate.client.user.UserInfoClient': FactoryBean threw exception on object creationat org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:154) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:90) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1823) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getObjectForBeanInstance(AbstractAutowireCapableBeanFactory.java:1265) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:259) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:254) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.support.DefaultListableBeanFactory.addCandidateEntry(DefaultListableBeanFactory.java:1628) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1585) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1368) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1325) ~[spring-beans-6.0.4.jar:6.0.4]at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:709) ~[spring-beans-6.0.4.jar:6.0.4]... 34 common frames omitted
Caused by: java.lang.IllegalStateException: No Feign Client for loadBalancing defined. Did you forget to include spring-cloud-starter-loadbalancer?at org.springframework.cloud.openfeign.FeignClientFactoryBean.loadBalance(FeignClientFactoryBean.java:401) ~[spring-cloud-openfeign-core-4.0.1.jar:4.0.1]at org.springframework.cloud.openfeign.FeignClientFactoryBean.getTarget(FeignClientFactoryBean.java:446) ~[spring-cloud-openfeign-core-4.0.1.jar:4.0.1]at org.springframework.cloud.openfeign.FeignClientFactoryBean.getObject(FeignClientFactoryBean.java:421) ~[spring-cloud-openfeign-core-4.0.1.jar:4.0.1]at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:148) ~[spring-beans-6.0.4.jar:6.0.4]... 45 common frames omitted

问题原因

SpringCloud Feign在Hoxton.M2 RELEASED版本之后不再使用ribbon

而是使用spring-cloud-loadbalancer，所以在不引入spring-cloud-loadbalancer情况下会报错
所以会出现以下错误:

Caused by: java.lang.IllegalStateException: No Feign Client for loadBalancing defined. Did you forget to include spring-cloud-starter-loadbalancer?

解决方案

1. 排除nacos中的ribbon依赖
2. 添加loadbalancer依赖

        <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><!--客户端负载均衡loadbalancer--><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-loadbalancer</artifactId></dependency>