导了个项目进eclipse，发现很多文件都报了错，错误提示是没有引入javax.servlet.http.HttpServletRequest和javax.servlet.http.HttpServletResponse所在的包，编译错误。
项目-->右键-->properties-->java build bath-->Libraries；然后add Library-->user Library-->Server Runtime-->next-->找到你的Tomcat目录，点击完成
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java找不到javax.servlet.http.HttpServletResponse和javax.servlet.http.HttpServletRequest
找不到 javax.servlet.http.HttpServletResponse 和 javax.servlet.http.HttpServletRequest 问题解决
java.lang.NoSuchMethodException: cn.web.servlet.UserServlet.login(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
javax.servlet.http.HttpServletResponse 修改Cookie的困惑
import javax.servlet.http.HttpServletRequest 提示错误
javax.servlet.http.HttpServletRequest导致新导入的项目报错
javax.servlet.http.HttpServletRequest导致新导入的项目报错
Could not autowire field: private javax.servlet.http.HttpServletRequest
The type javax.servlet.http.HttpServletResponse cannot be resolved. It is indirectly referenced from required .class files
项目导入时报错：The import javax.servlet.http.HttpServletRequest cannot be resolved