用文本+ASP打造新闻发布系统/图片上传(不是我写的)upload.inc

80酷酷网    80kuku.com

  上传<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))
    Else
     FormFileCT = ""
    End If
    
    '数据起始位置:2个CRLF开始
    DataStart = InStrB(PosOpenBoundary,FormData,str2bin(VbCrLf & VbCrLf)) + 4
    If FormFileName <> "" Then
     '数据长度,减1是因为数据文件的存取字节数问题(可能是AppendChunk方法的问题):
     '由于字节数为奇数的图象存到数据库时会去掉最后一个字符导致图象不能正确显示,
     '字节数为偶数的数据文件就不会出现这个问题,因此必须保持字节数为偶数。
     DataSize = InStrB(DataStart,FormData,DivStr) - DataStart - 1
     FormFieldData = MidB(FormData,DataStart,DataSize)
    Else
     '数据长度,减2是因为分隔标志串前有一个CRLF
     DataSize = InStrB(DataStart,FormData,DivStr) - DataStart - 2
     FormFieldData = bin2str(MidB(FormData,DataStart,DataSize))
    End If

    '建立一个Dictionary集存储Form中各个Field的相关数据
    Set Field = CreateUploadField()
    Field.Name = FormFieldName
    Field.FilePath = FormFileName
    Field.FileName = GetFileName(FormFileName)
    Field.ContentType = FormFileCT
    Field.Length = LenB(FormFieldData)
    Field.Value = FormFieldData
    
    Fields.Add FormFieldName, Field
    
    PosOpenBoundary = PosCloseBoundary
    PosCloseBoundary = InStrB(PosOpenBoundary + 1,FormData,DivStr)
  Wend
  Set GetUpload = Fields
End Function

'把二进制字符串转换成普通字符串函数
Function bin2str(binstr)
  Dim varlen,clow,ccc,skipflag
  '中文字符Skip标志
  skipflag=0
  ccc = ""
  If Not IsNull(binstr) Then
   varlen=LenB(binstr)
   For i=1 To varlen
     If skipflag=0 Then

分享到
  • 微信分享
  • 新浪微博
  • QQ好友
  • QQ空间
点击: