已解决|main |SpringApplication.java:826 |org.springframework.boot.SpringApplication |Application run fa

超、凢脫俗 2023-09-26 19:04 7阅读 0赞

已解决|main |SpringApplication.java:826 |org.springframework.boot.SpringApplication |Application run fail异常的正确解决方法，亲测有效！！！

![在这里插入图片描述][a98eec5618e9416f8adf82755122428f.webp_pic_center]

#### 文章目录 ####

*   *  报错问题
     *  解决方法
     *  声明

### 报错问题 ###

粉丝群里面的一个小伙伴敲代码时发生了报错（当时他心里瞬间凉了一大截，跑来找我求助，然后顺利帮助他解决了，顺便记录一下希望可以帮助到更多遇到这个bug不会解决的小伙伴），报错信息如下：

![在这里插入图片描述][8f076594400b491986ca13af92b59b0c.jpeg_pic_center]

> |main |SpringApplication.java:826 |org.springframework.boot.SpringApplication |Application run failed  
> org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘commentFront’: Unsatisfied dependency expressed through field ‘client’; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘com.atguigu.eduservice.client.UcenterClient’: FactoryBean threw exception on object creation; nested exception is java.lang.IllegalStateException: No fallback instance of type class com.atguigu.eduservice.client.impl.UcenterClientImpl found for feign client service-ucenter  
> at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor A u t o w i r e d F i e l d E l e m e n t . i n j e c t ( A u t o w i r e d A n n o t a t i o n B e a n P o s t P r o c e s s o r . j a v a : 639 ) a t o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . a n n o t a t i o n . I n j e c t i o n M e t a d a t a . i n j e c t ( I n j e c t i o n M e t a d a t a . j a v a : 116 ) a t o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . a n n o t a t i o n . A u t o w i r e d A n n o t a t i o n B e a n P o s t P r o c e s s o r . p o s t P r o c e s s P r o p e r t i e s ( A u t o w i r e d A n n o t a t i o n B e a n P o s t P r o c e s s o r . j a v a : 397 ) a t o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . s u p p o r t . A b s t r a c t A u t o w i r e C a p a b l e B e a n F a c t o r y . p o p u l a t e B e a n ( A b s t r a c t A u t o w i r e C a p a b l e B e a n F a c t o r y . j a v a : 1429 ) a t o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . s u p p o r t . A b s t r a c t A u t o w i r e C a p a b l e B e a n F a c t o r y . d o C r e a t e B e a n ( A b s t r a c t A u t o w i r e C a p a b l e B e a n F a c t o r y . j a v a : 594 ) a t o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . s u p p o r t . A b s t r a c t A u t o w i r e C a p a b l e B e a n F a c t o r y . c r e a t e B e a n ( A b s t r a c t A u t o w i r e C a p a b l e B e a n F a c t o r y . j a v a : 517 ) a t o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . s u p p o r t . A b s t r a c t B e a n F a c t o r y . l a m b d a AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:639) at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:116) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:397) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1429) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:639)atorg.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:116)atorg.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:397)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1429)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517)atorg.springframework.beans.factory.support.AbstractBeanFactory.lambdadoGetBean 0 ( A b s t r a c t B e a n F a c t o r y . j a v a : 323 ) a t o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . s u p p o r t . D e f a u l t S i n g l e t o n B e a n R e g i s t r y . g e t S i n g l e t o n ( D e f a u l t S i n g l e t o n B e a n R e g i s t r y . j a v a : 222 ) a t o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . s u p p o r t . A b s t r a c t B e a n F a c t o r y . d o G e t B e a n ( A b s t r a c t B e a n F a c t o r y . j a v a : 321 ) a t o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . s u p p o r t . A b s t r a c t B e a n F a c t o r y . g e t B e a n ( A b s t r a c t B e a n F a c t o r y . j a v a : 202 ) a t o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . s u p p o r t . D e f a u l t L i s t a b l e B e a n F a c t o r y . p r e I n s t a n t i a t e S i n g l e t o n s ( D e f a u l t L i s t a b l e B e a n F a c t o r y . j a v a : 879 ) a t o r g . s p r i n g f r a m e w o r k . c o n t e x t . s u p p o r t . A b s t r a c t A p p l i c a t i o n C o n t e x t . f i n i s h B e a n F a c t o r y I n i t i a l i z a t i o n ( A b s t r a c t A p p l i c a t i o n C o n t e x t . j a v a : 878 ) a t o r g . s p r i n g f r a m e w o r k . c o n t e x t . s u p p o r t . A b s t r a c t A p p l i c a t i o n C o n t e x t . r e f r e s h ( A b s t r a c t A p p l i c a t i o n C o n t e x t . j a v a : 550 ) a t o r g . s p r i n g f r a m e w o r k . b o o t . w e b . s e r v l e t . c o n t e x t . S e r v l e t W e b S e r v e r A p p l i c a t i o n C o n t e x t . r e f r e s h ( S e r v l e t W e b S e r v e r A p p l i c a t i o n C o n t e x t . j a v a : 141 ) a t o r g . s p r i n g f r a m e w o r k . b o o t . S p r i n g A p p l i c a t i o n . r e f r e s h ( S p r i n g A p p l i c a t i o n . j a v a : 747 ) a t o r g . s p r i n g f r a m e w o r k . b o o t . S p r i n g A p p l i c a t i o n . r e f r e s h C o n t e x t ( S p r i n g A p p l i c a t i o n . j a v a : 397 ) a t o r g . s p r i n g f r a m e w o r k . b o o t . S p r i n g A p p l i c a t i o n . r u n ( S p r i n g A p p l i c a t i o n . j a v a : 315 ) a t o r g . s p r i n g f r a m e w o r k . b o o t . S p r i n g A p p l i c a t i o n . r u n ( S p r i n g A p p l i c a t i o n . j a v a : 1226 ) a t o r g . s p r i n g f r a m e w o r k . b o o t . S p r i n g A p p l i c a t i o n . r u n ( S p r i n g A p p l i c a t i o n . j a v a : 1215 ) a t c o m . a t g u i g u . e d u s e r v i c e . E d u A p p l i c a t i o n . m a i n ( E d u A p p l i c a t i o n . j a v a : 15 ) C a u s e d b y : o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . B e a n C r e a t i o n E x c e p t i o n : E r r o r c r e a t i n g b e a n w i t h n a m e ′ c o m . a t g u i g u . e d u s e r v i c e . c l i e n t . U c e n t e r C l i e n t ′ : F a c t o r y B e a n t h r e w e x c e p t i o n o n o b j e c t c r e a t i o n ; n e s t e d e x c e p t i o n i s j a v a . l a n g . I l l e g a l S t a t e E x c e p t i o n : N o f a l l b a c k i n s t a n c e o f t y p e c l a s s c o m . a t g u i g u . e d u s e r v i c e . c l i e n t . i m p l . U c e n t e r C l i e n t I m p l f o u n d f o r f e i g n c l i e n t s e r v i c e − u c e n t e r a t o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . s u p p o r t . F a c t o r y B e a n R e g i s t r y S u p p o r t . d o G e t O b j e c t F r o m F a c t o r y B e a n ( F a c t o r y B e a n R e g i s t r y S u p p o r t . j a v a : 178 ) a t o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . s u p p o r t . F a c t o r y B e a n R e g i s t r y S u p p o r t . g e t O b j e c t F r o m F a c t o r y B e a n ( F a c t o r y B e a n R e g i s t r y S u p p o r t . j a v a : 101 ) a t o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . s u p p o r t . A b s t r a c t B e a n F a c t o r y . g e t O b j e c t F o r B e a n I n s t a n c e ( A b s t r a c t B e a n F a c t o r y . j a v a : 1818 ) a t o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . s u p p o r t . A b s t r a c t A u t o w i r e C a p a b l e B e a n F a c t o r y . g e t O b j e c t F o r B e a n I n s t a n c e ( A b s t r a c t A u t o w i r e C a p a b l e B e a n F a c t o r y . j a v a : 1266 ) a t o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . s u p p o r t . A b s t r a c t B e a n F a c t o r y . d o G e t B e a n ( A b s t r a c t B e a n F a c t o r y . j a v a : 260 ) a t o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . s u p p o r t . A b s t r a c t B e a n F a c t o r y . g e t B e a n ( A b s t r a c t B e a n F a c t o r y . j a v a : 202 ) a t o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . c o n f i g . D e p e n d e n c y D e s c r i p t o r . r e s o l v e C a n d i d a t e ( D e p e n d e n c y D e s c r i p t o r . j a v a : 276 ) a t o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . s u p p o r t . D e f a u l t L i s t a b l e B e a n F a c t o r y . a d d C a n d i d a t e E n t r y ( D e f a u l t L i s t a b l e B e a n F a c t o r y . j a v a : 1510 ) a t o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . s u p p o r t . D e f a u l t L i s t a b l e B e a n F a c t o r y . f i n d A u t o w i r e C a n d i d a t e s ( D e f a u l t L i s t a b l e B e a n F a c t o r y . j a v a : 1467 ) a t o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . s u p p o r t . D e f a u l t L i s t a b l e B e a n F a c t o r y . d o R e s o l v e D e p e n d e n c y ( D e f a u l t L i s t a b l e B e a n F a c t o r y . j a v a : 1250 ) a t o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . s u p p o r t . D e f a u l t L i s t a b l e B e a n F a c t o r y . r e s o l v e D e p e n d e n c y ( D e f a u l t L i s t a b l e B e a n F a c t o r y . j a v a : 1207 ) a t o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . a n n o t a t i o n . A u t o w i r e d A n n o t a t i o n B e a n P o s t P r o c e s s o r 0(AbstractBeanFactory.java:323) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:879) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) at com.atguigu.eduservice.EduApplication.main(EduApplication.java:15) Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.atguigu.eduservice.client.UcenterClient': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalStateException: No fallback instance of type class com.atguigu.eduservice.client.impl.UcenterClientImpl found for feign client service-ucenter at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:178) at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:101) at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1818) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getObjectForBeanInstance(AbstractAutowireCapableBeanFactory.java:1266) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:260) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) at org.springframework.beans.factory.support.DefaultListableBeanFactory.addCandidateEntry(DefaultListableBeanFactory.java:1510) at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1467) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1250) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1207) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor 0(AbstractBeanFactory.java:323)atorg.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)atorg.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321)atorg.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)atorg.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:879)atorg.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878)atorg.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550)atorg.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141)atorg.springframework.boot.SpringApplication.refresh(SpringApplication.java:747)atorg.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)atorg.springframework.boot.SpringApplication.run(SpringApplication.java:315)atorg.springframework.boot.SpringApplication.run(SpringApplication.java:1226)atorg.springframework.boot.SpringApplication.run(SpringApplication.java:1215)atcom.atguigu.eduservice.EduApplication.main(EduApplication.java:15)Causedby:org.springframework.beans.factory.BeanCreationException:Errorcreatingbeanwithname′com.atguigu.eduservice.client.UcenterClient′:FactoryBeanthrewexceptiononobjectcreation;nestedexceptionisjava.lang.IllegalStateException:Nofallbackinstanceoftypeclasscom.atguigu.eduservice.client.impl.UcenterClientImplfoundforfeignclientservice−ucenteratorg.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:178)atorg.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:101)atorg.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1818)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getObjectForBeanInstance(AbstractAutowireCapableBeanFactory.java:1266)atorg.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:260)atorg.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)atorg.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)atorg.springframework.beans.factory.support.DefaultListableBeanFactory.addCandidateEntry(DefaultListableBeanFactory.java:1510)atorg.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1467)atorg.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1250)atorg.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1207)atorg.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessorAutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:636)  
> … 19 common frames omitted  
> Caused by: java.lang.IllegalStateException: No fallback instance of type class com.atguigu.eduservice.client.impl.UcenterClientImpl found for feign client service-ucenter  
> at org.springframework.cloud.openfeign.HystrixTargeter.getFromContext(HystrixTargeter.java:81)  
> at org.springframework.cloud.openfeign.HystrixTargeter.targetWithFallback(HystrixTargeter.java:72)  
> at org.springframework.cloud.openfeign.HystrixTargeter.target(HystrixTargeter.java:49)  
> at org.springframework.cloud.openfeign.FeignClientFactoryBean.loadBalance(FeignClientFactoryBean.java:242)  
> at org.springframework.cloud.openfeign.FeignClientFactoryBean.getTarget(FeignClientFactoryBean.java:271)  
> at org.springframework.cloud.openfeign.FeignClientFactoryBean.getObject(FeignClientFactoryBean.java:251)  
> at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:171)  
> … 30 common frames omitted

### 解决方法 ###

解决方法如下

![在这里插入图片描述][51977e86019c4440b7d8465001aeac05.png]  
出现以上类似错误，就是熔断器实现类没加注解

@Component  
加上即可。

@Component
    public class UcenterClientImpl implements UcenterClient {

### 声明 ###

解决方法也是我在网上找的，如有侵权联系我删除

[a98eec5618e9416f8adf82755122428f.webp_pic_center]: https://img-blog.csdnimg.cn/a98eec5618e9416f8adf82755122428f.webp#pic_center
[8f076594400b491986ca13af92b59b0c.jpeg_pic_center]: https://img-blog.csdnimg.cn/8f076594400b491986ca13af92b59b0c.jpeg#pic_center
[51977e86019c4440b7d8465001aeac05.png]: https://img-blog.csdnimg.cn/51977e86019c4440b7d8465001aeac05.png