Eclipse Kepler不会自动生成web.xml

I saw a tutorial according to which web.xml was being created automatically in the WEB-INF folder in a dynamic web project and it included all the servlets and all the JSP pages and HTML pages were being included automatically. However, I cannot find any such file in my project. The IDE is not showing any error in the jsp and servlets that I have created.I saw a tutorial according to which web.xml was