java.lang.NoClassDefFoundError: org/apache/catalina/servlet4preview/http/HttpServletRequest

spring boot项目在tomcat里运行出错，看看主要的错误提示信息：

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'xxx': Failed to introspect bean class [com.xxx.xxx] for lookup method metadata: could not find class that it depends on; nested exception is java.lang.NoClassDefFoundError: org/apache/catalina/servlet4preview/http/HttpServletRequest

已经很清晰的看到了是xxx这个类里面的HttpServletRequest出现了问题。发现是HttpServletRequest的包导错了，之前导的是org.apache.catalina.servlet4preview.http.HttpServletRequest，改成javax.servlet.http.HttpServletRequest就可以了。