The easiest way is re-install your eclipse choosing the "Eclipse IDE for Java EE Developers" version that contains everything you could need to create a "Dynamic Web Project".
But if instead what do you need is a lighter eclipse to develop a Web Java application with aspectj, maven and Tomcat I recommend you to try this:
Steps for Eclipse Standard 4.3.2
http://www.eclipse.org/downloads/packages/release/kepler/sr2
- Add "Web Tools Platform"
http://download.eclipse.org/webtools/repository/kepler
- Web Tools Platform (WTP) 3.5.2
+ Faceted Project Framework (required to install Java EE Develper Tools)
+ Faceted Project Framework JDT Enablement (required to install Java EE Develper Tools)
+ Eclipse Java EE Develper Tools 3.5.2 (dynamic web project)
+ Eclipse Java Web Developer Tools 3.5.2 (JSP editor)
+ Eclipse Web Develper Tools 3.5.2
+ JST Server Adapters (need it for Tomcat server adapter)
+ JST Server Adapters Extensions (need it for Tomcat server adapter)
- Web Tools Platform (WTP) Patches 3.5.2
+ WTP Patches for org.eclipse.jst.commong.fproj.enablement.jdt
- Add "AspectJ Developmet Tools" (if you need AspectJ)
http://download.eclipse.org/tools/ajdt/43/update
+ AspectJ Developmet Tools 2.2.3
- Add "Maven Integration for Eclipse" (if you need maven)
- Web, XML, Java EE and OSGi...
+ m2e-wtp - Maven Integration for WTP 1.0.1
- Add m2e for AJDT
http://dist.springsource.org/release/AJDT/configurator/
+ Maven Integration for AJDT 0.14.