?? updateshopcartaction.java
字號:
package BookStore;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import javax.servlet.ServletContext;
import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.Statement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.*;
import javax.servlet.http.*;
import org.apache.struts.action.DynaActionForm;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;
public final class UpdateShopCartAction extends Action{
public ActionForward execute(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response) throws Exception {
DynaActionForm bookShopCartForm = (DynaActionForm) form;
Integer[] count = (Integer[])bookShopCartForm.get("count");
Integer[] del = (Integer[])bookShopCartForm.get("del");
HttpSession session = request.getSession();
ShopCart shopCart = new ShopCart();
Vector shopCartList=(Vector)session.getAttribute(Constants.BOOK_SHOPCART_KEY);
//更新數量
if(shopCartList!=null){
for(int i = 0; i < shopCartList.size() ;i++){
shopCart = (ShopCart)shopCartList.get(i);
shopCart.setCount(count[i].intValue());
shopCartList.set(i,shopCart);
}
//刪除
for(int i = shopCartList.size()-1;i >=0 ;i--){
shopCart = (ShopCart)shopCartList.get(i);
for(int j = 0;j < del.length;j++){
if (shopCart.getId()==del[j].intValue()){
shopCartList.remove(i);
}
}
}
session.setAttribute(Constants.BOOK_SHOPCART_KEY,shopCartList);
}
return (mapping.findForward("toBookShopCart"));
}
}
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