基于struts1.3的网上书店.

package bookstore.action; import org.apache.struts.action.*; import org.apache.struts.actions.*; import javax.servlet.http.*; import bookstore.dao.*; import java.util.*; import org.apache.struts.validator.*; import bookstore.common.*; import bookstore.form.*; public class CartAction extends DispatchAction { DaoFactory daofactory=DaoFactory.getInstance(); public void setMessage(HttpServletRequest request,String s) { Resources rs=new Resources(); request.setAttribute("info",rs.getMessage(request,s)); } /////////////////////////////////////// public ActionForward add( ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { String error=null; Map cart=null; HttpSession session=request.getSession(); String bookID=request.getParameter("bookID"); String bookName=request.getParameter("bookName"); bookName=Chinese.convert(bookName); String price=request.getParameter("price"); int qty=0; cart=(Map)session.getAttribute("cart"); if(cart==null) cart=new HashMap(); if(cart.containsKey(bookID)) { CartVO tmp=(CartVO)cart.get(bookID); qty=Integer.parseInt(tmp.getQty()); qty++; tmp.setQty(String.valueOf(qty)); cart.put(bookID,tmp); } else { CartVO vo=new CartVO(); vo.setBookID(bookID); vo.setBookName(bookName); vo.setPrice(price); vo.setQty("1"); cart.put(bookID,vo); } session.setAttribute("cart",cart); return mapping.findForward("show"); } //////////////////////////////// public ActionForward del( ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { String error=null; Map cart=null; HttpSession session=request.getSession(); String bookID=request.getParameter("bookID"); cart=(Map)session.getAttribute("cart"); if(cart.containsKey(bookID)) { cart.remove(bookID); } session.setAttribute("cart",cart); return mapping.findForward("show"); } /////////////// public ActionForward list( ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { return mapping.findForward("show"); } //////////////////////////// public ActionForward update( ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { String error=null; CartQtyForm qtyForm = (CartQtyForm)form; Map qtyMap=qtyForm.getMap(); Set idSet=qtyMap.keySet(); Iterator it=idSet.iterator(); HttpSession session=request.getSession(); Map cart=(Map)session.getAttribute("cart"); while(it.hasNext()) { String bookID=(String)it.next(); String newQty=(String)qtyMap.get(bookID); if(cart.containsKey(bookID)) { CartVO vo=(CartVO)cart.get(bookID); vo.setQty(newQty); cart.put(bookID,vo); } } session.setAttribute("cart",cart); return mapping.findForward("show"); } }