ASP 获取mssql数据库二进制数据

1. 保存至服务器中

<%

Dim id_srl  'request.QueryString("id_srl")

id_srl=49

if Cint(id_srl) >0 then

Dim Conn,ConnStr,Rs,Sql,MyStream

ConnStr="Provider=SQLOLEDB.1;Persist Security Info=False;User ID=fdp_user;Initial Catalog=FDP;Data Source=10.120.120.153;Locale     Identifier=1036;Connect Timeout=15;Use Procedure for Prepare=1;Auto Translate=True;Packet Size=4096;"

Set Conn = Server.CreateObject("Adodb.Connection")
Conn.Open ConnStr,"fdp_user","rlxhamster"

Sql = "select * from srl_contenu where id_srl="& id_srl

Set Rs = Server.CreateObject("Adodb.RecordSet")
Rs.Open Sql,Conn,1,3

Set objStream=Server.CreateObject("Adodb.Stream")

objStream.Type = 1
objStream.Open
objStream.Write Rs("Contenu").GetChunk(rs("Contenu").ActualSize-78)
objStream.SaveToFile server.MapPath("db")& "\" & Rs("Nom_fichier"),2

Set fso=Server.CreateObject("Scripting.FileSystemObject")
if fso.FileExists(server.MapPath("db")& "\" & Rs("Nom_fichier"))=True Then
response.write "File "& Rs("Nom_fichier") & " saved success!!"
end if

objStream.Close
set objStream=Nothing

Rs.Close
Set Rs = Nothing

Conn.Close
Set Conn = Nothing

end if

%>

 

2.下载文件示例

<%

'设置文件的大小及MIME类型
Function SetForDisplay(field, contentType)
  contentType = LCase(trim(contentType))
  nFieldSize = field.ActualSize
  bytes = field.GetChunk(nFieldSize)
  Session("Bytes") = bytes
  Session("Type") = contentType
End Function

Function SetFileSize(field)
  nFieldSize = field.ActualSize
  SetFileSize = field.GetChunk(nFieldSize)  
End Function

SetForDisplay rs("Contenu"),rs("Content_type")
Response.AddHeader "Content-Disposition", "attachment; filename=" & rs("Nom_fichier")
response.contentType = Session("Type")
response.BinaryWrite Session("Bytes")
Session("Type") = ""
Session("Bytes") = ""

%>