RESPUESTA A LA PREGUNTA 11596 - ASP


1)En un archivo, por ejemplo (llamalo upload.asp) copia lo siguiente:

<%
' Author Philippe Collignon
' Email PhCollignon@email.com

Sub BuildUploadRequest(RequestBin)
	'Get the boundary
	PosBeg = 1
	PosEnd = InstrB(PosBeg,RequestBin,getByteString(chr(13)))
	boundary = MidB(RequestBin,PosBeg,PosEnd-PosBeg)
	boundaryPos = InstrB(1,RequestBin,boundary)
	'Get all data inside the boundaries
	Do until (boundaryPos=InstrB(RequestBin,boundary & getByteString("--")))
		'Members variable of objects are put in a dictionary object
		Dim UploadControl
		Set UploadControl = CreateObject("Scripting.Dictionary")
		'Get an object name
		Pos = InstrB(BoundaryPos,RequestBin,getByteString("Content-Disposition"))
		Pos = InstrB(Pos,RequestBin,getByteString("name="))
		PosBeg = Pos+6
		PosEnd = InstrB(PosBeg,RequestBin,getByteString(chr(34)))
		Name = getString(MidB(RequestBin,PosBeg,PosEnd-PosBeg))
		PosFile = InstrB(BoundaryPos,RequestBin,getByteString("filename="))
		PosBound = InstrB(PosEnd,RequestBin,boundary)
		'Test if object is of file type
		If  PosFile<>0 AND (PosFile<PosBound) Then
			'Get Filename, content-type and content of file
			PosBeg = PosFile + 10
			PosEnd =  InstrB(PosBeg,RequestBin,getByteString(chr(34)))
			FileName = getString(MidB(RequestBin,PosBeg,PosEnd-PosBeg))
			'Add filename to dictionary object
			UploadControl.Add "FileName", FileName
			Pos = InstrB(PosEnd,RequestBin,getByteString("Content-Type:"))
			PosBeg = Pos+14
			PosEnd = InstrB(PosBeg,RequestBin,getByteString(chr(13)))
			'Add content-type to dictionary object
			ContentType = getString(MidB(RequestBin,PosBeg,PosEnd-PosBeg))
			UploadControl.Add "ContentType",ContentType
			'Get content of object
			PosBeg = PosEnd+4
			PosEnd = InstrB(PosBeg,RequestBin,boundary)-2
			Value = MidB(RequestBin,PosBeg,PosEnd-PosBeg)
			Else
			'Get content of object
			Pos = InstrB(Pos,RequestBin,getByteString(chr(13)))
			PosBeg = Pos+4
			PosEnd = InstrB(PosBeg,RequestBin,boundary)-2
			Value = getString(MidB(RequestBin,PosBeg,PosEnd-PosBeg))
		End If
		'Add content to dictionary object
	UploadControl.Add "Value" , Value	
		'Add dictionary object to main dictionary
	UploadRequest.Add name, UploadControl	
		'Loop to next object
		BoundaryPos=InstrB(BoundaryPos+LenB(boundary),RequestBin,boundary)
	Loop

End Sub

'String to byte string conversion
Function getByteString(StringStr)
 For i = 1 to Len(StringStr)
 	char = Mid(StringStr,i,1)
	getByteString = getByteString & chrB(AscB(char))
 Next
End Function

'Byte string to string conversion
Function getString(StringBin)
 getString =""
 For intCount = 1 to LenB(StringBin)
	getString = getString & chr(AscB(MidB(StringBin,intCount,1))) 
 Next
End Function
%>


2)Luego, en otro archivo (llamalo outputFile.asp)puedes copiar :

<%
' Author Philippe Collignon
' Email PhCollignon@email.com


Response.Expires=0
Response.Buffer = TRUE
Response.Clear
'Response.BinaryWrite(Request.BinaryRead(Request.TotalBytes))
byteCount = Request.TotalBytes
'Response.BinaryWrite(Request.BinaryRead(varByteCount))

RequestBin = Request.BinaryRead(byteCount)
Dim UploadRequest
Set UploadRequest = CreateObject("Scripting.Dictionary")

BuildUploadRequest  RequestBin

email = UploadRequest.Item("email").Item("Value")

contentType = UploadRequest.Item("blob").Item("ContentType")
filepathname = UploadRequest.Item("blob").Item("FileName")
filename = Right(filepathname,Len(filepathname)-InstrRev(filepathname,"\"))
value = UploadRequest.Item("blob").Item("Value")

'Create FileSytemObject Component
 Set ScriptObject = Server.CreateObject("Scripting.FileSystemObject")

'Create and Write to a File
 pathEnd = Len(Server.mappath(Request.ServerVariables("PATH_INFO")))-14
 Set MyFile = ScriptObject.CreateTextFile(Left(Server.mappath(Request.ServerVariables("PATH_INFO")),pathEnd)&"uploaded"&filename)
 
 For i = 1 to LenB(value)
	 MyFile.Write chr(AscB(MidB(value,i,1)))
 Next
 
 MyFile.Close
%>
<b>Uploaded file : </b><%="uploaded"&filename%><BR>
<img src="<%="uploaded"&filename%>">
<!--#include file="upload.asp"-->

3)En otro Archivo (llamalo binaryOutputClient.asp) copia lo siguiente:

<%
' Author Philippe Collignon
' Email PhCollignon@email.com

Response.Buffer = TRUE
Response.Clear
byteCount = Request.TotalBytes

RequestBin = Request.BinaryRead(byteCount)
Dim UploadRequest
Set UploadRequest = CreateObject("Scripting.Dictionary")

BuildUploadRequest  RequestBin

email = UploadRequest.Item("email").Item("Value")

contentType =  UploadRequest.Item("blob").Item("ContentType")
filepathname = UploadRequest.Item("blob").Item("FileName")
filename = Right(filepathname,Len(filepathname)-InstrRev(filepathname,"\"))
picture = UploadRequest.Item("blob").Item("Value")

Response.ContentType = contentType
Response.binaryWrite picture


%>
<!--#include file="upload.asp"-->

4)En otro archivo (llamalo outputClient.asp) copia lo sioguiente:

<%
' Author Philippe Collignon
' Email PhCollignon@email.com

Response.Buffer = TRUE
Response.Clear

byteCount = Request.TotalBytes

RequestBin = Request.BinaryRead(byteCount)
Dim UploadRequest
Set UploadRequest = CreateObject("Scripting.Dictionary")

BuildUploadRequest  RequestBin

email = UploadRequest.Item("email").Item("Value")

contentType = UploadRequest.Item("blob").Item("ContentType")
filepathname = UploadRequest.Item("blob").Item("FileName")
filename = Right(filepathname,Len(filepathname)-InstrRev(filepathname,"\"))
value = UploadRequest.Item("blob").Item("Value")
%>

Your email is : <%= email %><BR>
File name of you picture is <%=filepathname%><BR>
File type of your picture is <%=contentType%><BR>

<!--#include file="upload.asp"-->

5)Copia el .HTML de donde correras las .asp anteriores del ejemplo para ilustrarte como funciona, llama a este .html uploadForm.htm :

<!-- Author Philippe Collignon -->
<!-- Email PhCollignon@email.com -->
<HTML>
<HEAD>
	<TITLE>Upload Form</TITLE>
</HEAD>
<BODY>
<B>Output to client</b>
<FORM METHOD="Post" ENCTYPE="multipart/form-data" ACTION="outputClient.asp">
Email : <INPUT TYPE="Text" NAME="email" VALUE="PhCollignon@email.com"><BR>
Picture : <INPUT TYPE="file" NAME="blob"><BR>
<INPUT TYPE="submit" NAME="Enter">
</FORM>
<B>Binary output to client</b>
<FORM METHOD="Post" ENCTYPE="multipart/form-data" ACTION="binaryOutputClient.asp">
Email : <INPUT TYPE="Text" NAME="email" VALUE="PhCollignon@email.com"><BR>
Picture : <INPUT TYPE="file" NAME="blob"><BR>
<INPUT TYPE="submit" NAME="Enter">
</FORM>
<B>Output to file system</b>
<FORM METHOD="Post" ENCTYPE="multipart/form-data" ACTION="outputFile.asp">
Email : <INPUT TYPE="Text" NAME="email" VALUE="PhCollignon@email.com"><BR>
Picture : <INPUT TYPE="file" NAME="blob"><BR>
<INPUT TYPE="submit" NAME="Enter">
</FORM>

</BODY>
</HTML>

6)La manera como lo hace es que manipula el stream de caracteres que la pagina envia al servidor al hacer un 
submit. considerando que siempre cuando haces un submit, envias tambien las imagenes en el stream(rio) de caracteres.


Luis Fernando Martinez
lmartine@telconet.net