This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
You are misisng the aopalliance.jar file from your classpath. To use Spring and Spring AOP requires jar files in your classpath. It is more than just one jar, and it appears that you have at least one jar missing.