org.springframework.beans.factory.BeanCreationException: Error creating bean with name-优快云博客

本文解决了一个在SpringBoot应用中由于'userController'和'basicErrorController'映射到相同URL'/error'导致的启动失败问题。通过更改自定义错误处理方法的路径，避免了映射冲突。

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Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2019-12-23 15:48:56.616 ERROR 1892 --- [           main] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'requestMappingHandlerMapping' defined in class path resource [org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class]: Invocation of init method failed; nested exception is java.lang.IllegalStateException: Ambiguous mapping. Cannot map 'basicErrorController' method 
org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController#error(HttpServletRequest)
to { /error}: There is already 'userController' bean method
com.wkcto.springboot.controller.UserController#error() mapped.
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1796) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE]

注意下面两行

to { /error}: There is already 'userController' bean method
com.wkcto.springboot.controller.UserController#error() mapped.

表示userController中存在 /error 请求，这就需要把自己定义的 /error 请求换一个名字，这样就不报错了