orderlistbean.java

精美的画面。完善的功能

package Flower.model;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
public class OrderlistBean 
{
  Connection con=null;
  PreparedStatement pstmt=null;
  ResultSet rs=null;
 
  public boolean addOrderlist(Orderlist ol) throws Exception
  {
    boolean res=false;
    try
    {
      con=DBConnect.getConnection();
      pstmt=con.prepareStatement("insert into OrderList values(?,?,?,?,?)");
      pstmt.setString(1,ol.getOrderid());
      pstmt.setString(2,ol.getListid());
      pstmt.setString(3,ol.getGoodsid());
      pstmt.setLong(4,ol.getNum());
      pstmt.setDouble(5,ol.getPrice());
      pstmt.executeUpdate();
      pstmt.close();
      con.close();
      res=true;
      
    }
    catch(Exception ex)
    {
      ex.printStackTrace();
    }
    return res;
  }

  public boolean delOrderList(String id)
  {
    boolean res=false;
     try
    {
      con=DBConnect.getConnection();
      pstmt=con.prepareStatement("delete from OrderList where OrderID=?");
      pstmt.setString(1,id);
      pstmt.executeUpdate();
      pstmt.close();
      con.close();
      res=true;
      
    }
    catch(Exception ex)
    {
      ex.printStackTrace();
    }
    return res;
  }

  public boolean getID(String id)
  {
    boolean res=false;
     try
    {
      con=DBConnect.getConnection();
      pstmt=con.prepareStatement("select * from OrderList where OrderID=?");
      pstmt.setString(1,id);
      rs=pstmt.executeQuery();
      if(rs.next())
      {
        res=true;
      }
      else
      {
        res=false;
      }
      rs.close();
      pstmt.close();
      con.close();
      
      
    }
    catch(Exception ex)
    {
      ex.printStackTrace();
    }
    return res;
  }
}