断开的数据库连接的一个例子
点击次数：28 次 发布日期：2008-11-26 15:40:44 作者：源代码网
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指定Rs.CursorLocation = adUseClient or 3，下面是一个完整 的例子： demo-1.asp (在线演示：http://www.aspcn.com/demo/demo-1.asp) ------------------------------------------------------------ <%@ Language=VBScript %> <% "# ------------------------------------------------------------------- --------- "# 程序描述：演示使用断开的记录集 "# 程序设计：亚豪 "# ------------------------------------------------------------------- --------- On Error Resume Next Dim adoConn,adoRs,SQLCmd,ConnectString "#-------------------------------------------------------------------- --------- "# 使用SQL Server的 DSN-less 方式连接数据库 "#-------------------------------------------------------------------- --------- ConnectString = "Driver={SQL Server};" & _ "Server=(local);" & _ "Database=abc;" & _ "Uid=sa;" & _ "Pwd=123" "#-------------------------------------------------------------------- --------- "# 创建对象实例，并初始化连接(Connection) "#-------------------------------------------------------------------- --------- Set adoConn = Server.CreateObject("ADODB.Connection") Set adoRs = Server.CreateObject("ADODB.Recordset") adoConn.Open ConnectString SQLCmd = "Select * from bbs_user where LTrim(RTrim(id)) = "w3org"" "#-------------------------------------------------------------------- --------- "# 使用客户端临时表打开并保存记录集，关键所在！ "# 客户端是运行ASP程序的主机，相对于数据库服务器而言 "#-------------------------------------------------------------------- --------- adoRs.CursorLocation = 3 "Const adUseClient = 3 adoRs.Open SQLCmd,adoConn,0,2 "#-------------------------------------------------------------------- --------- "# 没有发现记录，结束程序 "#-------------------------------------------------------------------- --------- Err.Clear If adoRs.EOF And adoRs.BOF Then adoRs.Close adoConn.Close Set adoRs = Nothing Set adoConn = Nothing Response.Write "用户没有发现！" Response.End End If "#-------------------------------------------------------------------- --------- "# 找到记录，显示原来的值后释放记录集的活动连接，之后关闭数据库连接 "#-------------------------------------------------------------------- --------- Response.Write "原来的昵称是：" & Trim(adoRs.Fields("NickName").Value) & "<br>" & vbCrLf Set adoRs.ActiveConnection = Nothing "释放Rs的活动连接 adoConn.Close Response.Write "连接已经关闭！<br>" & vbCrLf "#-------------------------------------------------------------------- --------- "# 赋一个新的值给记录的 NickName 列，这时已经没有活动的数据库连接 "#-------------------------------------------------------------------- --------- adoRs.Fields("NickName").Value = "NewTest-" & Second(Time()) "#-------------------------------------------------------------------- --------- "# 再次打开数据库连接，并绑定到先前的记录集上 "#-------------------------------------------------------------------- --------- adoConn.Open ConnectString adoRs.ActiveConnection = adoConn "#-------------------------------------------------------------------- --------- "# 更新记录集，并显示新的值 "#-------------------------------------------------------------------- --------- adoRs.Update Response.Write "新的昵称是：" & Trim(adoRs.Fields("NickName").Value) & "<br>" & vbCrLf "显示一个结果 "#-------------------------------------------------------------------- --------- "# 如果发生错误则显示错误 "#-------------------------------------------------------------------- --------- If Err.number <> 0 Then Response.Write "发生错误：" & Err.description & "<br>" End If adoRs.Close adoConn.Close Set adoRs = Nothing Set adoConn = Nothing %> <HTML> <HEAD><Title>演示断开的连接</title></HEAD> 源代码网供稿. |
