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Spring web-flow for shopping cart or javascript?

I have a view controlled by mvc where there are a list of products. This page allow user add products to his shoping cart. I would want use spring webflow but I think use js in order to build the shopping cart is better approach because prevents requests to server.
Once shoping cart is built and when the user clicks CheckOut button I want to send a list of product IDs to a webflow in order to complete all remaining steps.
Do you think is a good approach? How can I achieve this using Spring Webflow by passing a dynamic list of Ids?


spring web flow is better choice for shopping cart in my opinion, because using javascript will cause you to do alot of changes while using webflow your work would be so easy.