Spring MVC应用程序将库存添加到购物车jsp JAVA中

I am trying to write simple web app with some stock which can be added to cart. I will copy the code and jsp files. I hope i am in right direction for solving this problem. I take the data from database. For now i want to show what is added to cart and later i will try to save it in db.I am trying to write simple web app with some s