文件名：upload.inc
说明：支持中文的无组件文件上传ASP函数，由于ASP不支持二进制写入文件，所以存成文件时必须使用组件，本函数只提供截取上传文件的数据，可以写入到数据库。

<SCRIPT RUNAT=SERVER LANGUAGE=VBSCRIPT>
Function GetUpload(FormData)
    Dim DataStart,DivStr,DivLen,DataSize,FormFieldData
    '分隔标志串(+CRLF)
    DivStr = LeftB(FormData,InStrB(FormData,str2bin(VbCrLf)) + 1)
    '分隔标志串长度
    DivLen = LenB(DivStr)
    PosOpenBoundary = InStrB(FormData,DivStr)
    PosCloseBoundary = InStrB(PosOpenBoundary + 1,FormData,DivStr)
    Set Fields = CreateObject("Scripting.Dictionary")
   
    While PosOpenBoundary > 0 And PosCloseBoundary > 0
       'name起始位置(name="xxxxx")，加6是因为[name="]长度为6
       FieldNameStart = InStrB(PosOpenBoundary,FormData,str2bin("name=")) + 6
       FieldNameSize = InStrB(FieldNameStart,FormData,ChrB(34)) - FieldNameStart '(")的ASC值=34
       FormFieldName = bin2str(MidB(FormData,FieldNameStart,FieldNameSize))
       
       'filename起始位置(filename="xxxxx")
       FieldFileNameStart = InStrB(PosOpenBoundary,FormData,str2bin("filename=")) + 10
       If FieldFileNameStart < PosCloseBoundary And FieldFileNameStart > PosopenBoundary Then
          FieldFileNameSize = InStrB(FieldFileNameStart,FormData,ChrB(34)) - FieldFileNameStart '(")的ASC值=34
          FormFileName = bin2str(MidB(FormData,FieldFileNameStart,FieldFileNameSize))
       Else
          FormFileName = ""
       End If
       
       'Content-Type起始位置(Content-Type: xxxxx)
       FieldFileCTStart = InStrB(PosOpenBoundary,FormData,str2bin("Content-Type:")) + 14
       If FieldFileCTStart < PosCloseBoundary  And FieldFileCTStart > PosOpenBoundary Then
          FieldFileCTSize = InStrB(FieldFileCTStart,FormData,str2bin(VbCrLf & VbCrLf)) - FieldFileCTStart
          FormFileCT = bin2str(MidB(FormData,FieldFileCTStart,FieldFileCTSize))
 &