MyEclipse开发项目时遇到HttpServletResponse报红叉怎么办?

今天写代码时，发现httpservletresponse response = servletactioncontext.getresponse();这句报红叉，提示the type javax.servlet.http.httpservletresponse cannot be resolved. it is indirectly referenced from required .class files，并要求configuration build path，经过尝试之后，发现解决办法。

错误情况：httpservletresponse response = servletactioncontext.getresponse();这句报红叉

提示：the type javax.servlet.http.httpservletresponse cannot be resolved. it is indirectly referenced from required .class files，并要求configuration build path

解决办法：点击提示中的configuration build path（或者右键项目，点击build path->configuration build path），打开build path界面后，选择libraries选项卡，并单击add library，如图

选择myeclipse libraries，点击next

找到java ee 5，点击finish

再看代码，红叉已经解决