Ms access 使用经典asp3/vbscript从accdb读取附件字段
我的accdb数据库文件中有一个附件字段, 我试图读取它以提取附件,但它始终返回空值 录制到本帖 adodb没有办法做到这一点,是吗?如果是的话,我还有什么方法可以做到这一点 这是我正在运行的代码:Ms access 使用经典asp3/vbscript从accdb读取附件字段,ms-access,vbscript,asp-classic,Ms Access,Vbscript,Asp Classic,我的accdb数据库文件中有一个附件字段, 我试图读取它以提取附件,但它始终返回空值 录制到本帖 adodb没有办法做到这一点,是吗?如果是的话,我还有什么方法可以做到这一点 这是我正在运行的代码: qid = request.querystring("qid") wikiDbAddress="database/my.accdb" set cnWiki=server.CreateObject("adodb.connection") cnWiki.open "DRIVER={Microsof
qid = request.querystring("qid")
wikiDbAddress="database/my.accdb"
set cnWiki=server.CreateObject("adodb.connection")
cnWiki.open "DRIVER={Microsoft Access Driver (*.mdb, *.accdb)}; DBQ=" & Server.MapPath(root&wikiDbAddress)
SQL = "select * from [Knowledge Base] where id="&qid
RS.Open SQL, cnWiki
do while not RS.eof
response.write RS("attachments")
RS.movenext
loop
现在,我做了一些有帮助的变通方法,虽然效率不高,但确实有效
qid = request.querystring("qid")
name = request.querystring("name")
SQL = "select Attachments.FileName as fname, Attachments.FileData as data, Attachments.FileType as FileType from [Knowledge Base] where Attachments.FileName='"&name&"' and id="&qid
RS.Open SQL, cnWiki
do while not RS.eof
if rs("fname")= name then
filename = Server.MapPath("/KB_"&qid&"_"&rs("fname"))
set fs=Server.CreateObject("Scripting.FileSystemObject")
if not fs.FileExists(filename) then
SaveBinaryData filename, rs("data")
data = readBinary(filename)
' CHR(255) = FF, CHR(170) = AA
data = Mid(data, 21, Len(data) - 20)
writeBinary data,filename
end if
set fs=nothing
downloadFromFile(filename )
exit do
else
RS.movenext
end if
loop
rs.close
cnWiki.close
function downloadFromFile(strFile )
Dim objConn
Dim intCampaignRecipientID
If strFile <> "" Then
Dim objStream
Set objStream = Server.CreateObject("ADODB.Stream")
objStream.Type = 1 'adTypeBinary
objStream.Open
objStream.LoadFromFile(strFile)
Response.Clear
'Response.ContentType = "image/jpeg"
Response.Addheader "Content-Disposition", "attachment; filename=" & strFile
Response.BinaryWrite objStream.Read
objStream.Close
Set objStream = Nothing
End If
End Function
Function SaveBinaryData(FileName, ByteArray)
Const adTypeBinary = 1
Const adSaveCreateOverWrite = 2
'Create Stream object
Dim BinaryStream
Set BinaryStream = CreateObject("ADODB.Stream")
'Specify stream type - we want To save binary data.
BinaryStream.Type = adTypeBinary
'Open the stream And write binary data To the object
BinaryStream.Open
BinaryStream.Write ByteArray
'Save binary data To disk
BinaryStream.SaveToFile FileName, adSaveCreateOverWrite
End Function
Function readBinary(path)
Dim a, fso, file, i, ts
Set fso = CreateObject("Scripting.FileSystemObject")
Set file = fso.getFile(path)
If isNull(file) Then
wscript.echo "File not found: " & path
Exit Function
End If
Set ts = file.OpenAsTextStream()
a = makeArray(file.size)
i = 0
While Not ts.atEndOfStream
a(i) = ts.read(1)
i = i + 1
Wend
ts.close
readBinary = Join(a,"")
End Function
Sub writeBinary(bstr, path)
Dim fso, ts
Set fso = CreateObject("Scripting.FileSystemObject")
On Error Resume Next
Set ts = fso.createTextFile(path)
If Err.number <> 0 Then
wscript.echo Err.message
Exit Sub
End If
On Error GoTo 0
ts.Write(bstr)
ts.Close
End Sub
Function makeArray(n)
Dim s
s = Space(n)
makeArray = Split(s," ")
End Function
qid=request.querystring(“qid”)
name=request.querystring(“name”)
SQL=“从[Knowledge Base]中选择Attachments.FileName作为fname,Attachments.FileData作为数据,Attachments.FileType作为文件类型,其中Attachments.FileName=”“&name&”,id=“&qid
开放式SQL,cnWiki
做而不做
如果rs(“fname”)=名称,则
filename=Server.MapPath(“/KB\uquo&qid&”\uquo&rs(“fname”))
设置fs=Server.CreateObject(“Scripting.FileSystemObject”)
如果不存在fs.FileExists(文件名),则
SaveBinaryData文件名,rs(“数据”)
data=readBinary(文件名)
'CHR(255)=FF,CHR(170)=AA
数据=Mid(数据,21,透镜(数据)-20)
可写二进制数据,文件名
如果结束
设置fs=nothing
下载自文件(文件名)
退出do
其他的
下一个
如果结束
环
克洛斯
cnWiki.close
函数下载自文件(strFile)
模糊对象
Dim IntractiveRecipientId
如果是strFile“”,则
暗流
设置objStream=Server.CreateObject(“ADODB.Stream”)
objStream.Type=1'adTypeBinary
对象流。打开
objStream.LoadFromFile(strFile)
回答,清楚
'Response.ContentType=“image/jpeg”
Response.Addheader“内容处置”,“附件;文件名=”&strFile
Response.BinaryWrite objStream.Read
objStream,关闭
设置objStream=Nothing
如果结束
端函数
函数SaveBinaryData(文件名,ByteArray)
常量adTypeBinary=1
常量adSaveCreateOverWrite=2
'创建流对象
暗二进制流
Set BinaryStream=CreateObject(“ADODB.Stream”)
'指定流类型-我们要保存二进制数据。
BinaryStream.Type=adTypeBinary
'打开流并将二进制数据写入对象
二进制流,打开
BinaryStream.Write ByteArray
'将二进制数据保存到磁盘
BinaryStream.SaveToFile文件名,adSaveCreateOverWrite
端函数
函数readBinary(路径)
尺寸a、fso、文件、i、ts
设置fso=CreateObject(“Scripting.FileSystemObject”)
Set file=fso.getFile(路径)
如果isNull(文件),则
wscript.echo“未找到文件:”&路径
退出功能
如果结束
设置ts=file.OpenAsTextStream()
a=makeArray(file.size)
i=0
而不是ts.atEndOfStream
a(i)=ts.read(1)
i=i+1
温德
关闭
readBinary=Join(a,“”)
端函数
子写二进制(bstr,路径)
暗色fso,ts
设置fso=CreateObject(“Scripting.FileSystemObject”)
出错时继续下一步
设置ts=fso.createTextFile(路径)
如果错误号为0,则
wscript.echo Err.message
出口接头
如果结束
错误转到0
ts.Write(bstr)
关闭
端接头
函数makeArray(n)
暗淡的
s=空间(n)
makeArray=Split(s,“”)
端函数
目前,我做了一些变通方法,这些方法对我有所帮助,虽然效率不高,但确实有效
qid = request.querystring("qid")
name = request.querystring("name")
SQL = "select Attachments.FileName as fname, Attachments.FileData as data, Attachments.FileType as FileType from [Knowledge Base] where Attachments.FileName='"&name&"' and id="&qid
RS.Open SQL, cnWiki
do while not RS.eof
if rs("fname")= name then
filename = Server.MapPath("/KB_"&qid&"_"&rs("fname"))
set fs=Server.CreateObject("Scripting.FileSystemObject")
if not fs.FileExists(filename) then
SaveBinaryData filename, rs("data")
data = readBinary(filename)
' CHR(255) = FF, CHR(170) = AA
data = Mid(data, 21, Len(data) - 20)
writeBinary data,filename
end if
set fs=nothing
downloadFromFile(filename )
exit do
else
RS.movenext
end if
loop
rs.close
cnWiki.close
function downloadFromFile(strFile )
Dim objConn
Dim intCampaignRecipientID
If strFile <> "" Then
Dim objStream
Set objStream = Server.CreateObject("ADODB.Stream")
objStream.Type = 1 'adTypeBinary
objStream.Open
objStream.LoadFromFile(strFile)
Response.Clear
'Response.ContentType = "image/jpeg"
Response.Addheader "Content-Disposition", "attachment; filename=" & strFile
Response.BinaryWrite objStream.Read
objStream.Close
Set objStream = Nothing
End If
End Function
Function SaveBinaryData(FileName, ByteArray)
Const adTypeBinary = 1
Const adSaveCreateOverWrite = 2
'Create Stream object
Dim BinaryStream
Set BinaryStream = CreateObject("ADODB.Stream")
'Specify stream type - we want To save binary data.
BinaryStream.Type = adTypeBinary
'Open the stream And write binary data To the object
BinaryStream.Open
BinaryStream.Write ByteArray
'Save binary data To disk
BinaryStream.SaveToFile FileName, adSaveCreateOverWrite
End Function
Function readBinary(path)
Dim a, fso, file, i, ts
Set fso = CreateObject("Scripting.FileSystemObject")
Set file = fso.getFile(path)
If isNull(file) Then
wscript.echo "File not found: " & path
Exit Function
End If
Set ts = file.OpenAsTextStream()
a = makeArray(file.size)
i = 0
While Not ts.atEndOfStream
a(i) = ts.read(1)
i = i + 1
Wend
ts.close
readBinary = Join(a,"")
End Function
Sub writeBinary(bstr, path)
Dim fso, ts
Set fso = CreateObject("Scripting.FileSystemObject")
On Error Resume Next
Set ts = fso.createTextFile(path)
If Err.number <> 0 Then
wscript.echo Err.message
Exit Sub
End If
On Error GoTo 0
ts.Write(bstr)
ts.Close
End Sub
Function makeArray(n)
Dim s
s = Space(n)
makeArray = Split(s," ")
End Function
qid=request.querystring(“qid”)
name=request.querystring(“name”)
SQL=“从[Knowledge Base]中选择Attachments.FileName作为fname,Attachments.FileData作为数据,Attachments.FileType作为文件类型,其中Attachments.FileName=”“&name&”,id=“&qid
开放式SQL,cnWiki
做而不做
如果rs(“fname”)=名称,则
filename=Server.MapPath(“/KB\uquo&qid&”\uquo&rs(“fname”))
设置fs=Server.CreateObject(“Scripting.FileSystemObject”)
如果不存在fs.FileExists(文件名),则
SaveBinaryData文件名,rs(“数据”)
data=readBinary(文件名)
'CHR(255)=FF,CHR(170)=AA
数据=Mid(数据,21,透镜(数据)-20)
可写二进制数据,文件名
如果结束
设置fs=nothing
下载自文件(文件名)
退出do
其他的
下一个
如果结束
环
克洛斯
cnWiki.close
函数下载自文件(strFile)
模糊对象
Dim IntractiveRecipientId
如果是strFile“”,则
暗流
设置objStream=Server.CreateObject(“ADODB.Stream”)
objStream.Type=1'adTypeBinary
对象流。打开
objStream.LoadFromFile(strFile)
回答,清楚
'Response.ContentType=“image/jpeg”
Response.Addheader“内容处置”,“附件;文件名=”&strFile
Response.BinaryWrite objStream.Read
objStream,关闭
设置objStream=Nothing
如果结束
端函数
函数SaveBinaryData(文件名,ByteArray)
常量adTypeBinary=1
常量adSaveCreateOverWrite=2
'创建流对象
暗二进制流
Set BinaryStream=CreateObject(“ADODB.Stream”)
'指定流类型-我们要保存二进制数据。
BinaryStream.Type=adTypeBinary
'打开流并将二进制数据写入对象
二进制流,打开
BinaryStream.Write ByteArray
'将二进制数据保存到磁盘
BinaryStream.SaveToFile文件名,adSaveCreateOverWrite
端函数
函数readBinary(路径)
尺寸a、fso、文件、i、ts
设置fso=CreateObject(“Scripting.FileSystemObject”)
Set file=fso.getFile(路径)
如果isNull(文件),则
wscript.echo“未找到文件:”&路径
退出功能
如果结束
设置ts=file.OpenAsTextStream()
a=makeArray(file.size)
i=0
而不是ts.atEndOfStream
a(i)=ts.read(1)
i=i+1
温德
关闭
readBinary=Join(a,“”)
端函数
子写二进制(bstr,路径)
暗色fso,ts
设置fso=CreateObject(“Scripting.Fi