How to config the web.xml tomcat in with XAMPP?

[j2ee]

I only had experience in tomcat in XAMPP without web.xml. I need to create a upload file to server page now and it must include servlet. I follow exactly the first answer in this instruction:
http://stackoverflow.com/questions/19510656/how-to-upload-files-on-server-folder-using-jsp
I create a WEB-INF folder in my webapp folder, and put the web.xml in it. Then "The requested resource is not available." error appears when I try to access upload.jsp. The other webapps are fine without problem but they don't have their own WEB-INF and web.xml. What should I do?