javaweb 小问题求大神帮忙解决下

Question

Deployment is out of date due to changes in the underlying project contents. You'll need to manually 'Redeploy' the project to update the deployed archive.
Missing web.xml deployment descriptor in WEB-INF folder

myeclipse2014 tomcat 7.0
刚安装的时候好好的 几天后就在部署项目时不能部署 大学生初学 请求帮助

Answer 1

他说你更改过文件内容，你再重新build 部署一下项目；还有，说你web.xml在WEB-INF文件夹中缺失，你去核实一下