有没有用aspcnup组件上传的弟兄，高分问个问题？

chassis 2001-12-03 08:14:31

我现在用他的0.75版本，现在想实现一个功能，就是当用户上传文件时，如果数据库中已有这个文件，系统就提示，覆盖或改名。哪位给个源代码看看吧。可以在给分的，我有3000多分哪

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yy8354 2001-12-19

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这是一个不需要数据库实现上传的组件代码自己研究了

<SCRIPT Ra)只能运行于 Windows2000+IIS 5,不支持 NT4+IIS4 或是 Win98+PWS, 只要在ASP中加上:
 就行了

b) 在使用文件上传时, 表单 form 要加上 enctype="multipart/form-data" 即:

<form name="form1" method="post" action="" enctype="multipart/form-data">
<input type="text" value="abc" name="text1">
<input type=file name="file">
<input type=submit name="submit" value="提交">
</form>

upload_5xsoft的对象

如定义一个上传对象

<%
set upload=new upload_5xsoft 'upload就是一个对象
%>

upload_5xsoft 对象成员
file 文件对象集,(是个dictionary对象)

文件对象成员:
Count 属性,文件表单的个数
FileName 属性,上传文件的名字
FileSize 属性,上传文件的大小(为0是表示没有文件)
FilePath 属性,上传前文件所在的路径
FormName 属性,文件表单的名字
SaveAs 方法,储存上传后文件,有一个参数,路径要为真实路径如:
例子: set file=upload.file("file1") 'file1为表单名

response.write "<br>文件名:"&file.FileName

response.write "<br>文件大小:"&file.FileSize

response.write "<br>文件路径:"&file.FilePath

file.saveAs Server.mappath("/1.jpg")

set file=nothing
form 表单数据集,(是个dictionary对象)用来代替 Request.Form
count 属性,表单数
exists 方法,检查是否有指定的表单名
更多的用法可看 vbscript 的dictionary对象帮助
例子:
'得到text1表单的数据,uplaod就是一开始创建的对象

sText=upload.form("text1")
Version 属性,upload_5xsoft类的版本号,如:

response.write upload.Version

使用示例

1.上传一个jpg文件的示例:

文件1: upload.htm

<html><title>example</title>
<body>
<form name="form1" method="post" action="upload.asp" enctype="multipart/form-data">
<input type=file name="file1">
<input type=submit name="submit" value="提交">
</form>
</body>
</html>

文件2: upload.asp

<html><title>example</title>
<body>

<%
set upload=new upload_5xsoft
set file=upload.file("file1")
if file.fileSize>0 then
file.saveAs Server.mappath("temp.jpg")
response.write "<br>上传文件:"&file.FileName&" => temp.jpg OK!"
response.write "<br>文件大小:"&file.FileSize
set file=nothing
end if
set upload=nothing
%></body>
</html>

2.列表出有文件表单(多文件上传)
<html><title>example</title>
<body>

<%
set upload=new upload_5xsoft
for each formName in upload.file
set file=upload.file(formName)
if file.FileSize>0 then
file.SaveAs Server.mappath(file.FileName)
response.write file.FilePath&file.FileName&" ("&file.FileSize&") => "
response.write file.FileName&" 成功!<br>"
end if
set file=nothing
next
set upload=nothing
%>

下面这是组件代码！！！！！！！！！！！！！
<RUNAT=SERVER LANGUAGE=VBSCRIPT>

'''''''''''''''''''''''''''''''''''''''''''''''''
'
'请保留此信息: 稻香老农制作 http://www.5xSoft.com/
'
'''''''''''''''''''''''''''''''''''''''''''''''''

dim upfile_5xSoft_Stream

Class upload_5xSoft

dim Form,File,Version

Private Sub Class_Initialize
dim iStart,iFileNameStart,iFileNameEnd,iEnd,vbEnter,iFormStart,iFormEnd,theFile
dim strDiv,mFormName,mFormValue,mFileName,mFileSize,mFilePath,iDivLen,mStr
Version="化境编程界HTTP上传程序 Version 1.0"
if Request.TotalBytes<1 then Exit Sub
set Form=CreateObject("Scripting.Dictionary")
set File=CreateObject("Scripting.Dictionary")
set upfile_5xSoft_Stream=CreateObject("Adodb.Stream")
upfile_5xSoft_Stream.mode=3
upfile_5xSoft_Stream.type=1
upfile_5xSoft_Stream.open
upfile_5xSoft_Stream.write Request.BinaryRead(Request.TotalBytes)

vbEnter=Chr(13)&Chr(10)
iDivLen=inString(1,vbEnter)+1
strDiv=subString(1,iDivLen)
iFormStart=iDivLen
iFormEnd=inString(iformStart,strDiv)-1
while iFormStart < iFormEnd
iStart=inString(iFormStart,"name=""")
iEnd=inString(iStart+6,"""")
mFormName=subString(iStart+6,iEnd-iStart-6)
iFileNameStart=inString(iEnd+1,"filename=""")
if iFileNameStart>0 and iFileNameStart<iFormEnd then
iFileNameEnd=inString(iFileNameStart+10,"""")
mFileName=subString(iFileNameStart+10,iFileNameEnd-iFileNameStart-10)
iStart=inString(iFileNameEnd+1,vbEnter&vbEnter)
iEnd=inString(iStart+4,vbEnter&strDiv)
if iEnd>iStart then
mFileSize=iEnd-iStart-4
else
mFileSize=0
end if
set theFile=new FileInfo
theFile.FileName=getFileName(mFileName)
theFile.FilePath=getFilePath(mFileName)
theFile.FileSize=mFileSize
theFile.FileStart=iStart+4
theFile.FormName=FormName
file.add mFormName,theFile
else
iStart=inString(iEnd+1,vbEnter&vbEnter)
iEnd=inString(iStart+4,vbEnter&strDiv)

if iEnd>iStart then
mFormValue=subString(iStart+4,iEnd-iStart-4)
else
mFormValue=""
end if
form.Add mFormName,mFormValue
end if

iFormStart=iformEnd+iDivLen
iFormEnd=inString(iformStart,strDiv)-1
wend
End Sub

Private Function subString(theStart,theLen)
dim i,c,stemp
upfile_5xSoft_Stream.Position=theStart-1
stemp=""
for i=1 to theLen
if upfile_5xSoft_Stream.EOS then Exit for
c=ascB(upfile_5xSoft_Stream.Read(1))
If c > 127 Then
if upfile_5xSoft_Stream.EOS then Exit for
stemp=stemp&Chr(AscW(ChrB(AscB(upfile_5xSoft_Stream.Read(1)))&ChrB(c)))
i=i+1
else
stemp=stemp&Chr(c)
End If
Next
subString=stemp
End function

Private Function inString(theStart,varStr)
dim i,j,bt,theLen,str
InString=0
Str=toByte(varStr)
theLen=LenB(Str)
for i=theStart to upfile_5xSoft_Stream.Size-theLen
if i>upfile_5xSoft_Stream.size then exit Function
upfile_5xSoft_Stream.Position=i-1
if AscB(upfile_5xSoft_Stream.Read(1))=AscB(midB(Str,1)) then
InString=i
for j=2 to theLen
if upfile_5xSoft_Stream.EOS then
inString=0
Exit for
end if
if AscB(upfile_5xSoft_Stream.Read(1))<>AscB(MidB(Str,j,1)) then
InString=0
Exit For
end if
next
if InString<>0 then Exit Function
end if
next
End Function

Private Sub Class_Terminate
form.RemoveAll
file.RemoveAll
set form=nothing
set file=nothing
upfile_5xSoft_Stream.close
set upfile_5xSoft_Stream=nothing
End Sub

Private function GetFilePath(FullPath)
If FullPath <> "" Then
GetFilePath = left(FullPath,InStrRev(FullPath, "\"))
Else
GetFilePath = ""
End If
End function

Private function GetFileName(FullPath)
If FullPath <> "" Then
GetFileName = mid(FullPath,InStrRev(FullPath, "\")+1)
Else
GetFileName = ""
End If
End function

Private function toByte(Str)
dim i,iCode,c,iLow,iHigh
toByte=""
For i=1 To Len(Str)
c=mid(Str,i,1)
iCode =Asc(c)
If iCode<0 Then iCode = iCode + 65535
If iCode>255 Then
iLow = Left(Hex(Asc(c)),2)
iHigh =Right(Hex(Asc(c)),2)
toByte = toByte & chrB("&H"&iLow) & chrB("&H"&iHigh)
Else
toByte = toByte & chrB(AscB(c))
End If
Next
End function
End Class

Class FileInfo
dim FormName,FileName,FilePath,FileSize,FileStart
Private Sub Class_Initialize
FileName = ""
FilePath = ""
FileSize = 0
FileStart= 0
FormName = ""
End Sub

Public function SaveAs(FullPath)
dim dr,ErrorChar,i
SaveAs=1
if trim(fullpath)="" or FileSize=0 or FileStart=0 or FileName="" then exit function
if FileStart=0 or right(fullpath,1)="/" then exit function
set dr=CreateObject("Adodb.Stream")
dr.Mode=3
dr.Type=1
dr.Open
upfile_5xSoft_Stream.position=FileStart-1
upfile_5xSoft_Stream.copyto dr,FileSize
dr.SaveToFile FullPath,2
dr.Close
set dr=nothing
SaveAs=0
end function
End Class
</SCRIPT>

chassis 2001-12-19