Error creating bean with name 'eurekaClient' defined in BeanDefinition defined in class path resourc

分手后的思念是犯贱 2022-03-25 13:14 208阅读 0赞

直接看报错信息

2019-01-21 10:11:12.976 [ERROR] [main] [SpringApplication:771] : Application startup failed
    org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'eurekaClient' defined in BeanDefinition defined in class path resource [org/springframework/cloud/netflix/eureka/EurekaClientAutoConfiguration$RefreshableEurekaClientConfiguration.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.cloud.context.scope.GenericScope$LockedScopedProxyFactoryBean]: No default constructor found; nested exception is java.lang.NoSuchMethodException: org.springframework.cloud.context.scope.GenericScope$LockedScopedProxyFactoryBean.<init>()
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1110)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1054)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:512)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
    	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
    	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
    	at org.springframework.beans.factory.support.AbstractBeanFactory.isSingleton(AbstractBeanFactory.java:428)
    	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doGetBeanNamesForType(DefaultListableBeanFactory.java:424)
    	at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:390)
    	at org.springframework.boot.autoconfigure.web.ErrorMvcAutoConfiguration$PreserveErrorControllerTargetClassPostProcessor.postProcessBeanFactory(ErrorMvcAutoConfiguration.java:334)
    	at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:281)
    	at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:176)
    	at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:686)
    	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:524)
    	at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)
    	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693)
    	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360)
    	at org.springframework.boot.SpringApplication.run(SpringApplication.java:303)
    	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118)
    	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107)
    	at com.xxx.api.Application.main(Application.java:31)
    Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.cloud.context.scope.GenericScope$LockedScopedProxyFactoryBean]: No default constructor found; nested exception is java.lang.NoSuchMethodException: org.springframework.cloud.context.scope.GenericScope$LockedScopedProxyFactoryBean.<init>()
    	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:85)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1102)
    	... 22 common frames omitted
    Caused by: java.lang.NoSuchMethodException: org.springframework.cloud.context.scope.GenericScope$LockedScopedProxyFactoryBean.<init>()
    	at java.lang.Class.getConstructor0(Class.java:3082)
    	at java.lang.Class.getDeclaredConstructor(Class.java:2178)
    	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:80)
    	... 23 common frames omitted

GenericScope$LockedScopedProxyFactoryBean：No default constructor found没有默认构造器。。

java.lang.NoSuchMethodException: org.springframework.cloud.context.scope.GenericScope$LockedScopedProxyFactoryBean.

没有这个方法。。。

进行搜索，发现这个类可以找到，同时方法也是可以找到，并且找到2个！！！重点就是2个，很简单，直接show dependencies排除掉多余jar即可。

总结：类似的问题只看报错（方法、构造器），可能无法直接明白的知道是jar冲突了，但是经过简单的分析也可以很快发现问题

补充：如何show dependencies

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMDcwMzkz_size_16_color_FFFFFF_t_70][]

选择show dependencies

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMDcwMzkz_size_16_color_FFFFFF_t_70 1][]

着重看红色线标识部分，红色虚线先排除掉，方法是：选择jar包，右键排除

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMDcwMzkz_size_16_color_FFFFFF_t_70 2][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMDcwMzkz_size_16_color_FFFFFF_t_70]: /images/20220325/65065107f1a54527aecaea2b63a580b8.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMDcwMzkz_size_16_color_FFFFFF_t_70 1]: /images/20220325/bd5a109497764f87875b318dc70bc96b.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMDcwMzkz_size_16_color_FFFFFF_t_70 2]: /images/20220325/308782c8f3bf4a02a2ef4211dd186477.png

Error creating bean with name 'eurekaClient' defined in BeanDefinition defined in class path resourc

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