部署springmvc的时候报出一个很奇怪的错误：org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping#0’: Failed to introspect bean class [org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping] for lookup method metadata: could not find class that it depends on; nested exception is java.lang.NoClassDefFoundError: org/springframework/web/cors/CorsProcessor
其实这是jar包版本不一致的问题：
