Idea 报错Cannot resolve symbol ‘HttpServlet‘ 或者 Idea报错Cannot resolve symbol ‘Http‘

Idea 报错Cannot resolve symbol ‘HttpServlet‘ 或者 Idea报错Cannot resolve symbol ‘Http‘Idea 报错Cannot resolve symbol ‘HttpServlet’ 或者 Idea报错Cannot resolve symbol ‘Http’

1、File->Settings->Application Servers->+ Tomcat Server->选择tomcat->OK

Idea 报错Cannot resolve symbol ‘HttpServlet‘ 或者 Idea报错Cannot resolve symbol ‘Http‘

2、右键项目选择Open Module Setting->选择Global Libraries->±>Java-> 进入刚才设置的Tomcat目录选择lib下的servlet-api.jarIdea 报错Cannot resolve symbol ‘HttpServlet‘ 或者 Idea报错Cannot resolve symbol ‘Http‘Idea 报错Cannot resolve symbol ‘HttpServlet‘ 或者 Idea报错Cannot resolve symbol ‘Http‘Idea 报错Cannot resolve symbol ‘HttpServlet‘ 或者 Idea报错Cannot resolve symbol ‘Http‘Idea 报错Cannot resolve symbol ‘HttpServlet‘ 或者 Idea报错Cannot resolve symbol ‘Http‘