SpringBoot创建bean错误

Question

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哪位大佬遇到了这个问题关电脑的时候都还好好的，第二天打开就这样了实在解决不了了，百度找遍了都不合适

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2021-06-04 22:02:05.600 ERROR 5716 --- [           main] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'purchaseController': Unsatisfied dependency expressed through field 'purchaseService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'purchaseService': Unsatisfied dependency expressed through field 'wareSkuService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'wareSkuService': Unsatisfied dependency expressed through field 'productFeignService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.wzw.gulishop.ware.feign.ProductFeignService': FactoryBean threw exception on object creation; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mvcResourceUrlProvider' defined in class path resource [org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.web.servlet.resource.ResourceUrlProvider]: Factory method 'mvcResourceUrlProvider' threw exception; nested exception is java.lang.NoSuchFieldError: defaultInstance

Answer 1

log的意思应该是EnableWebMvcConfiguration中已经定义了mvcResourceUrlProvider这个bean，你又创建了一遍，使用FactoryBean去创建ProductFeignService时出的问题。因为没看过源码，也不知道具体是不是，你可以看一下。