用asp实现的数据库中存取文件的代码

*************************************************************************
"**
"** 使用 ADODB.Stream 保存/读取文件到数据库
"** 引用 Microsoft ActiveX Data Objects 2.5 Library 及以上版本
"**
"** ----- 数据库连接字符串模板 ---------------------------------------
"** ACCESS数据库
"** iConcStr = "Provider=Microsoft.Jet.OLEDB.4.0;Persist Security Info=False" & _
"**     ";Data Source=数据库名"
"**
"** SQL数据库
"** iConcStr = "Provider=SQLOLEDB.1;Persist Security Info=True;" & _
"**     "User ID=用户名;Password=密码;Initial Catalog=数据库名;Data Source=SQL服务器名"
"**
"*************************************************************************
"
"保存文件到数据库中
Sub s_SaveFile（）
    Dim iStm As ADODB.Stream
    Dim iRe As ADODB.Recordset
    Dim iConcStr As String

    "数据库连接字符串
    iConcStr = "Provider=Microsoft.Jet.OLEDB.4.0;Persist Security Info=False" & _
        ";Data Source=F:My Documents客户资料1.mdb"

    "读取文件到内容
    Set iStm = New ADODB.Stream
    With iStm
        .Type = adTypeBinary    "二进制模式
        .Open
        .LoadFromFile "c: est.doc"
    End With

    "打开保存文件的表
    Set iRe = New ADODB.Recordset
    With iRe
        .Open "表", iConc, adOpenKeyset, adLockOptimistic
        .AddNew         "新增一条记录
        .Fields（"保存文件内容的字段"） = iStm.Read
        .Update
    End With

    "完成后关闭对象
    iRe.Close
    iStm.Close
End Sub

"从数据库中读取数据,保存成文件
Sub s_ReadFile（）
    Dim iStm As ADODB.Stream
    Dim iRe As ADODB.Recordset
    Dim iConc As String

    "数据库连接字符串
    iConc = "Provider=Microsoft.Jet.OLEDB.4.0;Persist Security Info=False" & _
        ";Data Source=\xzc$Inetpubzjzjzj.mdb"

    "打开表
    Set iRe = New ADODB.Recordset
    iRe.Open "tb_img", iConc, adOpenKeyset, adLockReadOnly
    iRe.Filter = "id=64"

    "保存到文件
    Set iStm = New ADODB.Stream
    With iStm
        .Mode = adModeReadWrite
        .Type = adTypeBinary
        .Open
        .Write iRe（"img"）
        .SaveToFile "c: est.doc"
    End With

    "关闭对象
    iRe.Close
    iStm.Close
End Sub