asp类的操作
这是网上一个牛人写的，请给个实例吧？？
<%
//基本操作类用Javascript实现的一个数据库操作类
Response.Expires=-1000;
Response.CacheControl="no-cache";
function DBOperate()
{
this.connString=""; //连接字符串
this.connString="Provider=microsoft.jet.oledb.4.0;data source="+Server.MapPath("/sms/dbo/aaa@163.com/#data.asp");
//this.connString="driver={SQL SERVER};server=localhost;database=user;uid=study;pwd=study;";
this.conn; //数据库连接对象
this.rs; //数据集
this.cursorType=1; //纪录集移动方式：
this.lockType=1; //纪录集锁定方式：
//*************************************************************************
//当分页的时候，计算totalRecordCount和totalPageCount
//*************************************************************************
this.totalRecordCount=0; //纪录集总纪录数，开始由于没纪录集，所以为0
this.pageSize=10; //每页最大纪录数，默认为10
this.totalPageCount=0; //最大页数.
//*************************************************************************
this.currentPageID=1; //当前页码，默认为1
this.currentPageTag="CurrentPageID";
this.gotoPageName="?"; //显示纪录的页面名称,默认为当前页面
this.recordIndexInPage=0; //用于分页时的数据下移
//打开数据库
this.openDatabase=function(_dbPath)
{
if (_dbPath!=undefined)
{
this.connString="Provider=microsoft.jet.oledb.4.0;data source="+Server.MapPath(_dbPath);
}
try
{
this.conn=Server.CreateObject("ADODB.Connection");
this.conn.Open(this.connString);
}
catch (e)
{
Response.Write("数据库连接错误!");
Response.End();
}
}
//关闭数据库
this.closeDatabase=function()
{
if (this.rs!=null)
{
this.rs.Close();
this.rs=null;
}
if (this.conn!=null)
{
this.conn.Close();
this.conn=null;
}
}
//获取一个数据集对象
this.getRecordSet=function(_sqlString)
{
if (this.conn!=null)
{
var i=Request.QueryString(this.currentPageTag).Count;
if (i>0)
{
this.currentPageID=parseInt(Request.QueryString(this.currentPageTag));
if (this.currentPageID<=0)
{
this.closeDatabase();
Response.Write("页码超出合法范围!");
Response.End();
}
}
this.rs=Server.CreateObject("ADODB.RecordSet");
this.rs.Open(_sqlString,this.conn,this.cursorType,this.lockType);
this.totalRecordCount=this.rs.RecordCount;
this.totalPageCount=Math.ceil(this.totalRecordCount/this.pageSize);
var endPage=this.totalPageCount;
if (endPage==0) endPage=1;
if (this.currentPageID>endPage)
{
this.closeDatabase();
Response.Write("页码超出合法范围!"+this.pageSize);
Response.End();
}
//指针位置调整
if (!this.rsIsEmpty() && this.currentPageID>1)
{
this.rs.MoveFirst();
this.rs.Move((this.currentPageID-1)*this.pageSize,1);
}
}
else
{
Response.Write("没有连接到数据库!");
Response.End();
}
}
//判断分页的时候记录是否已到一页的末尾
this.isPageEnd=function()
{
this.rs.moveNext();
this.recordIndexInPage++;
if (this.recordIndexInPage<this.pageSize)
{
return false;
}
else
{
return true;
}
}
//关闭数据集对象
this.closeRecordSet=function()
{
if (this.rs!=null)
{
this.rs.Close();
this.rs=null;
}
}
//执行SQL语句，用于执行添加、删除、修改操作
this.executeSql=function(_sqlString)
{
if (this.conn!=null)
{
this.conn.Execute(_sqlString);
}
else
{
Response.Write("没有连接到数据库!");
Response.End();
}
}
this.addNewAndReturnPK=function(_parameterMap,_tableName,_pkName)
{
var returnValue="";
if (this.rs==null)
{
this.rs=Server.CreateObject("ADODB.RecordSet");
this.rs.ActiveConnection=this.conn;
this.rs.CursorType=this.cursorType;
}
this.rs.LockType=3;
this.rs.Source=_tableName;
this.rs.Open();
this.rs.AddNew();
var keys=_parameterMap.keys();
for (var i=0;i<keys.length;i++)
{
//Response.Write(keys[i]+":");
//Response.Write(_parameterMap.get(keys[i])+"<br>");
try
{
this.rs(keys[i])=_parameterMap.get(keys[i]);
}
catch (e)
{}
}
this.rs.Update();
returnValue=this.rs(_pkName).value;
this.rs.Close();
this.rs.LockType=this.lockType;
this.rs.Open();
return returnValue;
}
this.updateRecord=function(_parameterMap,_tableName,_pkValue,_pkName)
{
if (this.rs==null)
{
this.rs=Server.CreateObject("ADODB.RecordSet");
this.rs.ActiveConnection=this.conn;
this.rs.CursorType=this.cursorType;
}
this.rs.LockType=3;
this.rs.Source=_tableName;
this.rs.Open();
this.rs.Find(_pkName+"="+_pkValue);
var keys=_parameterMap.keys();
for (var i=0;i<keys.length;i++)
{
try
{
this.rs(keys[i])=_parameterMap.get(keys[i]);
}
catch (e)
{}
}
this.rs.Update();
this.rs.Close();
this.rs.LockType=this.lockType;
this.rs.Open();
}
//判断获取的数据集对象是否为空
this.rsIsEmpty=function()
{
if (this.rs!=null)
{
if ((this.rs.BOF) && (this.rs.EOF))
{
//RS is empty
return true;
}
else
{
//RS not empty
return false;
}
}
else
{
Response.Write("没有连接到数据库!");
Response.End();
}
}
}
%>