苦心源码，欢迎下载

SavePic.asp

<%
‘’---------------------------------------RETURN THE IMAGE FORMAT--------------------
function checkImageFormat(checkdata)
‘’--return: A,B,C (A is image format; B is height pixels; C is width pixels; D is color depth)

  flag=0  ‘’‘’‘’‘’‘’‘’‘’0 is not jpg/gif/png image; 1 is jpg/gif/png
  
  ‘’-------------------------------------------------------check jpg----------------
if flag=0 then
  tempstr=Leftb(checkdata,10)
  tstr=chrb(255)&chrb(216)&chrb(255)&chrb(224)&chrb(0)&chrb(16)&chrb(74)&chrb(70)&chrb(73)&chrb(70)

  if strcomp(tempstr,tstr,0)=0 then
     msgstr01="jpg"
       lngSize = len(checkdata)
     flgFound = 0
    
    strTarget = chrb(255) & chrb(216) & chrb(255)
    flgFound = instrb(checkdata, strTarget)

    lngPos = flgFound + 2
    ExitLoop = false

    do while ExitLoop = False and lngPos < lngSize

      do while ascb(midb(checkdata, lngPos, 1)) = 255 and lngPos < lngSize
        lngPos = lngPos + 1
      loop

      if ascb(midb(checkdata, lngPos, 1)) < 192 or ascb(midb(checkdata, lngPos, 1)) > 195 then
        lngMarkerSize = lngConvert2(midb(checkdata, lngPos + 1, 2))
        lngPos = lngPos + lngMarkerSize + 1
      else
        ExitLoop = True
      end if

    loop

    i_Height = lngConvert2(midb(checkdata,  lngPos +4, 2))
    i_Width  = lngConvert2(midb(checkdata, lngPos +6, 2))
    i_Depth  = 2 ^ (ascb(midb(checkdata, lngPos + 8, 1)) * 8)
   
    msgstr02=","& i_height & "," & i_width
    flag=2
  else
    flag=0
  end if


end if
  ‘’--------------------------------------------------check gif--------------------------------
   if flag=0 then
    tempstr=Leftb(checkdata,6)
    tstr=chrb(71)&chrb(73)&chrb(70)&chrb(56)&chrb(57)&chrb(97)
    tstr2=chrb(71)&chrb(73)&chrb(70)&chrb(56)&chrb(55)&chrb(97)
    if strcomp(tempstr,tstr,0)=0 or strcomp(tempstr,tstr2)=0 then
      msgstr03="gif"
    
      i_width=lngConvert(midb(checkdata,7,2))
      i_height=lngConvert(midb(checkdata,9,2))
      i_Depth = 2 ^ ((ascb(midb(checkdata, 11, 1)) and 7) + 1)
      msgstr04=","& i_height & ","& i_width
      
      flag=2
    else
      flag=0
    end if
  end if

  ‘’---------------------------------------------------check png------------------------------
  if flag=0 then
    tempstr=Leftb(checkdata,4)
    tstr=chrb(137)&chrb(80)&chrb(78)&chrb(71)
    if strcomp(tempstr,tstr,0)=0 then
      msgstr05="png"
        
      i_Width  = lngConvert2(midb(checkdata, 19, 2))
      i_Height = lngConvert2(midb(checkdata, 23, 2))
      i_Depth  = lngConvert(midb(checkdata, 25, 2))

      select case ascb(right(i_Depth,1))
        case 0
          i_Depth   = 2 ^ (asc(left(i_Depth, 1)))
          gfxSpex = True
        case 2
          i_Depth   = 2 ^ (asc(left(i_Depth, 1)) * 3)
          gfxSpex = True
        case 3
          i_Depth   = 2 ^ (asc(left(i_Depth, 1))) ‘’8
          gfxSpex = True
        case 4
          i_Depth   = 2 ^ (asc(left(i_Depth, 1)) * 2)
          gfxSpex = True
        case 6
          i_Depth   = 2 ^ (asc(left(i_Depth, 1)) * 4)
          gfxSpex = True
        case else
          i_Depth   = -1
      end select
      msgstr06=","& i_height & ","& i_width

      flag=2
    else
      flag=0
    end if
  end if
  if flag=0 then
     msgstr07="no image"
  end if
  msgstr=msgstr01 & msgstr02 & msgstr03 & msgstr04 & msgstr05 & msgstr06 & msgstr07

  checkImageFormat=msgstr
end function

function lngConvert2(strTemp)
  str1=leftb(strTemp,1)
  str2=rightb(strTemp,1)
  lngConvert2 = clng(ascb(str2) + ((ascb(str1) * 256)))
end function

function lngConvert(strTemp)
  str1=leftb(strTemp,1)
  str2=rightb(strTemp,1)
  len1=ascb(str1)
  len2=ascb(str2)
  lngConvert = clng(ascb(str1) + ascb(str2) * 256)
end function

‘’------------------------Copyright by qinls------------------
%>




<%

Response.buffer=true                   ‘’将服务端传送给缓冲区
filesize=Request.totalbytes               ‘’客户端响应数据字节的大小
filedata=Request.binaryread(filesize)  ‘’得到数据量要小于或等于totalbytes




‘’*******得到有效的图片的信息*********
bncrlf=chrB(13) & chrB(10)
divider=leftB(filedata,clng(instrB(filedata,bncrlf))-1)
datastart=instrb(filedata,bncrlf & bncrlf)+4
dataend=instrb(datastart+1,filedata,divider)-datastart   ‘’(搜索的起点，字符串1，字符串2)
mydata=midb(filedata,datastart,dataend)

arrayMessage=split(checkImageFormat(mydata),",")
‘’*********************************

%>

<% if arrayMessage(1)>150 OR arrayMessage(2)>100 then %>   
   <script language="javascript">
         alert("您所选择的图片的尺寸不符合要求！应在 高*宽 150*100 之间")
         window.location="SP.htm"
   </script>
<% Else
Set Cn=server.CreateObject("ADODB.connection")
Cn.ConnectionString="Driver={Microsoft Aclearcase/" target="_blank" >ccess Driver (*.mdb)};DBQ=" & Server.MapPath("pic.mdb")
Cn.Open

Set Rs=Server.createobject("ADODB.Recordset")
Rs.Open "SELECT * FROM T1 where ID is Null",Cn,1,3
Rs.Addnew
Rs.Fields("IMG").appendchunk mydata
Rs.Update
Rs.Close
Set Rs=nothing
Set Cn=nothing
End if
%>
<script language="Javascript">
   window.location="SP.htm"
</script>



‘’&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&



SearchPic.asp

<script language="javascript">

</script>
<%
Set Cn=server.CreateObject("ADODB.connection")
Cn.ConnectionString="Driver={Microsoft Access Driver (*.mdb)};DBQ=" & server.MapPath("pic.mdb")
Cn.Open
Set Rs=Server.Createobject("ADODB.Recordset")

Sql="SELECT * from T1"
Rs.open Sql,Cn,2,3

Response.Write "<table width=""100%"" cellspacing=""0"" cellpadding=""0"" border=""2"" bordercolor=""#CCCCCC"" align=""center"">"
Do While NOT Rs.EOF
   Response.Write "<tr>"
   Response.Write "<td>"
   Response.Write trim(Rs.Fields("ID"))
   Response.Write "</td>"
   Numberimg=Rs.Fields("ID")
   Response.Write "<td>"
   Response.Write "<IMG SRC=""ShowPic.asp?ID=" & Numberimg & """>"
   Response.Write "</td>"
   Rs.MoveNext
   Response.Write "</tr>"
Loop
   Response.Write "</table>"%>
<% Response.Write "<P></P>" %>
<input type="button" value="继续上传图片"  onclick="window.location=‘’SP.htm‘’">
<%Rs.Close
Cn.Close
%>



‘’&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
SeeBig.asp

<HTML>
<BODY >
<input type="image" name="img1" SRC= <%=Request("FFF") %> >
</BODY>
</HTML>



‘’&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&

ShowPic.asp


<%
Set Cn=server.CreateObject("ADODB.connection")
Cn.ConnectionString="Driver={Microsoft Access Driver (*.mdb)};DBQ=" & server.MapPath("pic.mdb")
Cn.Open
Set Rs=Server.Createobject("ADODB.recordset")
Sql="SELECT IMG from T1 WHERE ID=" & Request("ID")
Rs.open Sql,Cn,1,1
Response.ContentType = "image/*"
Response.BinaryWrite Rs("IMG").getChunk(7500000)

Rs.Close

Set Rs=nothing
Set Cn=nothing
%>

‘’&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&

SP.htm


<html>
<head>
<script language="JavaScript">
    function See(hh,ff) {
        hh.src=ff.value
}
    function SeeBig(filepath){
        window.open("SeeBig.asp?FFF="+filepath,"","");
}
</Script>
</head>
<body>

<form name="f1" enctype="multipart/form-data" action="SavePic.asp" method=post>
  <input type=file name="file1">
  <input type="button" name="b1" value="预览" onClick="See(this.form.picview,this.form.file1)" >
  <input type=submit name="upfile" value="上传">
  <br>
<img src="image/view.JPG" name="picview" width="100" height="120" Border="0" alt="单击放大" onClick="SeeBig(file1.value)">
</form>

<form name="f2" action="SearchPic.asp" method="post">
  <input type="submit" name="s2" value="查看所有上传图片">
</form>

</body>
</html>

原文转自：http://www.ltesting.net