The package javax.servlet.http is accessible from more than one module: servlet.api, tomcat.i18n.es,

from:https://blog.csdn.net/u013320881/article/details/79549044

javax.servlet is accessible from more than one module:

import javax.servlet   导包失败

    Tomcat的包路径要选择Classpath，否则就不能编译，导致找不到Servlet相关的包。

步骤如下：

     1.右键 ----》 Properties ----> Java Build Path ----> Libraries ----> ClassPath ---->Add Library ----> Server Runtime ----> Next ----> 选择tomcat ----> Finish

    2. Apple应用。