Spring Framework example source code file (AddItemToCartController.java)

This example Spring Framework source code file (AddItemToCartController.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Spring Framework tags/keywords

additemtocartcontroller, cart, cart, controller, exception, http, httpservletresponse, item, item, modelandview, modelandview, petstorefacade, request, response, servlet, string, string

The Spring Framework AddItemToCartController.java source code

package org.springframework.samples.jpetstore.web.spring;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.samples.jpetstore.domain.Cart;
import org.springframework.samples.jpetstore.domain.Item;
import org.springframework.samples.jpetstore.domain.logic.PetStoreFacade;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;
import org.springframework.web.util.WebUtils;

/**
 * @author Juergen Hoeller
 * @since 30.11.2003
 */
public class AddItemToCartController implements Controller {

	private PetStoreFacade petStore;

	public void setPetStore(PetStoreFacade petStore) {
		this.petStore = petStore;
	}

	public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {
		Cart cart = (Cart) WebUtils.getOrCreateSessionAttribute(request.getSession(), "sessionCart", Cart.class);
		String workingItemId = request.getParameter("workingItemId");
		if (cart.containsItemId(workingItemId)) {
			cart.incrementQuantityByItemId(workingItemId);
		}
		else {
			// isInStock is a "real-time" property that must be updated
			// every time an item is added to the cart, even if other
			// item details are cached.
			boolean isInStock = this.petStore.isItemInStock(workingItemId);
			Item item = this.petStore.getItem(workingItemId);
			cart.addItem(item, isInStock);
		}
		return new ModelAndView("Cart", "cart", cart);
	}

}