cartbo.java

网上购物系统,相信看后会有很大收获,用java,jsp,servlet编写

package test.bo;
import java.util.*;
import java.sql.*;
import test.db.*;
import test.models.*;

public class CartBO {
  public CartBO() {
  }

  public Collection searchItem(String strSql){
    Collection ret = new ArrayList();
  try {
    DBAccess dba = new DBAccess();
    ResultSet rs = dba.openSelect(strSql);
    while (rs.next()) {
      Item temp = new Item();
      temp.setItemId(rs.getString("itemid"));
      temp.setProductId(rs.getString("productid"));
//      Product product=new Product();
//      temp.setProduct(product);
      temp.getProduct().setName(rs.getString("name"));
      temp.setListPrice(rs.getBigDecimal("listprice"));
      temp.setUnitCost(rs.getBigDecimal("unitcost"));
      temp.setSupplier(rs.getString("supplier"));
      ret.add(temp);
    }
  }
  catch (Exception ex) {
    ex.printStackTrace();
  }
  return ret;
}

public Item getCartItem(String strSql){
  Item item=new Item();
  try
  {
    DBAccess dba = new DBAccess();
    ResultSet rs = dba.openSelect(strSql);
    while(rs.next())
    {
      item.setItemId(rs.getString("itemid"));
      item.setProductId(rs.getString("productid"));
      item.setListPrice(rs.getBigDecimal("listprice"));
      item.setSupplier(rs.getString("supplier"));
      item.setStatus(rs.getString("status"));
      item.setAttribute1(rs.getString("attr1"));
      item.setAttribute2(rs.getString("attr2"));
      item.setAttribute3(rs.getString("attr3"));
      item.setAttribute4(rs.getString("attr4"));
      item.setAttribute5(rs.getString("attr5"));

      item.getProduct().setName(rs.getString("name"));
      item.getProduct().setProductId(rs.getString("productid"));
    }
  }
  catch(Exception e)
  {
    e.printStackTrace();
  }
  return item;
}

}