systembiz.java

购物车程序:主要用Struts+Hibernate框架实现

package com.rmeng.shoppingCart.biz;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;

import com.rmeng.shoppingCart.dao.ShoppingCartDao;
import com.rmeng.shoppingCart.dao.impl.ShoppingCartDaoHbnImpl;
import com.rmeng.shoppingCart.javabean.entity.*;

public class SystemBiz {
					private  Product product = null;
					public SystemBiz(){} 
					public User login(User user)
					{				
							ShoppingCartDaoHbnImpl scd;
							User user1 = null;
							try {
								scd = new ShoppingCartDaoHbnImpl();
							if( scd.login(user.getUserName(),user.getPassword())!=null)
							{
								user1=scd.login(user.getUserName(),user.getPassword());
							}
							} catch (RuntimeException e) {
								// TODO Auto-generated catch block
								e.printStackTrace();
							}
							return user1;
//							User use = si.login("rmeng","820419");
//							System.out.println(use.getEmail());				
						}
							public Collection listProduct()
								{							
								ShoppingCartDao scd=new ShoppingCartDaoHbnImpl(); 
								Collection set= scd.showAllProducts().values();
								Iterator it=set.iterator();
								System.out.println(it.next());
								return set;
							}
					
					
							public Product findProductById(int pid)
							{
								Collection set=listProduct();
								Iterator it=set.iterator();
								Product product;
								while(it.hasNext())
								{	
									product=(Product) it.next();
									if(pid==product.getPid())
									{									
									return product;
									}
								}
								return null;
							}				
					
							public int generaterOrder(User user,Cart cart)
							{
								ShoppingCartDaoHbnImpl scd=new ShoppingCartDaoHbnImpl();
								return scd.generateOrder(user,cart);
							}
						}