- springboot启动失败
- 报错Correct the classpath of your application so that it contains ***patible versions of the classes org.springframework.web.servlet.handler.AbstractHandlerMethodMapping and org.springframework.web.method.HandlerMethod
排查发现：pom依赖同时引用了两个不同版本的web包。
删掉一个web依赖重新构建以后问题直接解决。
Correct the classpath of your application so that it contains ***patible versions of the classes org.springframework.web.servlet.handler.AbstractHandlerMethodMapping and org.springframework.web.method.HandlerMethod
某个类构建失败，删掉target重新构建
