qitadaoimpl.java~3~

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package liangjuyan.dao;

import liangjuyan.qita;
import liangjuyan.conndb;
import java.util.List;
import java.util.ArrayList;
import java.sql.ResultSet;
import java.sql.*;
import liangjuyan.chStr;

public class qitadaoimpl
    implements qitadao{
  private conndb conn = new conndb();
  //执行插入操作
  public int insert(qita q) {
    chStr chStr = new chStr();
    int ret = -1;
    try {
      String sql = "Insert into qita (Wupinming,Yanse,Changjia,Cailiao,Shiyongnianxian,Shengchanriqi,Goumaichishu,Tuijianzhishu,Youdian,Tupian,Tebietuijian,Datupian,Price,Qtypeid,Sale,Newgood) values('" +
          chStr.chStr(q.getWupinming()) + "','" + chStr.chStr(q.getYanse()) +
          "','" + chStr.chStr(q.getChangjia()) +"','" + chStr.chStr(q.getCailiao()) + "','" + chStr.chStr(q.getShiyongnianxian()) +
          "','" + chStr.chStr(q.getShengchanriqi()) + "','" +
          chStr.chStr(q.getGoumaichishu()) + "','" + chStr.chStr(q.getTuijianzhishu()) +
          "','" +chStr.chStr(q.getYoudian()) + "','" + chStr.chStr(q.getTupian()) + "','" +q.getTebietuijian()+ "','" +chStr.chStr( q.getDatupian())+ "','" + q.getPrice()+ "','" + q.getQtypeid()+ "','" + q.getSale()+ "','" + q.getNewgood()+ "')";
       ret = conn.executeUpdate(sql);
    }
    catch (Exception e) {
      ret = 0;
    }
    conn.close();
    return ret;
  }

  //执行修改操作
  public int update(qita q) {
    int ret = -1;
    chStr chStr = new chStr();
    try {
      String sql = "update qita set wupinming='" +
          chStr.chStr(q.getWupinming()) +
          "',yanse='" + chStr.chStr(q.getYanse()) + "',changjia='" +
         q.getChangjia()+ "',cailiao='" + chStr.chStr(q.getCailiao()) +
          "',shiyongnianxian='" + chStr.chStr(q.getShiyongnianxian()) +
          "',Shengchanriqi='" + chStr.chStr(q.getShengchanriqi()) + "',goumaichishu='" +
          chStr.chStr(q.getGoumaichishu()) + "',tuijianzhishu='" + chStr.chStr(q.getTuijianzhishu()) +
          "',youdian='" + chStr.chStr(q.getYoudian()) + "',tupian='" + chStr.chStr(q.getTupian()) + "',tebietuijian='"+q.getTebietuijian()+"',datupian='" + chStr.chStr(q.getDatupian()) + "',price='" + q.getPrice() + "',qtypeid='"+q.getQtypeid()+"',sale='"+q.getSale()+"',newgood='"+q.getNewgood()+"' where qitaid=" + q.getQitaid();
      ret = conn.executeUpdate(sql);
    }
    catch (Exception e) {
      ret = 0;
    }
    conn.close();
    return ret;
  }


  //执行删除操作
  public int delete(qita q) {
     int ret=-1;
     try{
       String sql="Delete from qita where qitaid="+q.getQitaid();
       ret=conn.executeUpdate(sql);
     }catch(Exception e){
       ret=0;
     }
     conn.close();
     return ret;

   }


  //执行查询操作
  public List select() {
   qita form = null;
    List list = new ArrayList();
    String sql = "select * from qita";
    ResultSet rs = conn.executeQuery(sql);
    try {
      while (rs.next()) {
        form = new qita();
        form.setQitaid(Integer.valueOf(rs.getString(1)));

        list.add(form);
      }
    }
    catch (SQLException ex) {
    }
    conn.close();
    return list;
  }

  public qita select1() {
    return null;
  }

}