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以下代碼沒有規(guī)范，還有些功能沒完成，有那位高手能把它修改一下，封裝成類則更是造福大眾，或者以后有時(shí)間我會(huì)做的。有任何錯(cuò)誤或建議請(qǐng)一定要給我發(fā)E-mail:sobina@21cn.com,謝謝。
好了，少說多做，本示例在w2kServer,IIS5,SQL SERVER7中測(cè)試通過。
如有不明白的可到精華區(qū)查“圖象”或“圖片”關(guān)鍵字找到答案，或?qū)懶沤o我。
示例一共有三個(gè)文件：upload.htm(上傳界面)
process.asp(處理程序)
showimg.asp(顯示圖象)
數(shù)據(jù)庫(kù):在pubs數(shù)據(jù)庫(kù)中建立一個(gè)新表名為imgtest
字段名 類型 長(zhǎng)度
-----------------------------------------------------
idint (自動(dòng)編號(hào))
img iamge(Access為OLE)
imginfo nchar50
以下是三個(gè)文件的代碼:
upload.htm
---------------------------------------------------------------------
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<style type="text/css">
<!--
td {font-size: 9pt}
a {color: #000000; text-decoration: none}
a:hover {text-decoration: underline}
.tx {height: 16px; width: 30px; border-color: black black #000000; border-top-width: 0px;
border-right-width: 0px; border-bottom-width: 1px; border-left-width: 0px; font-size: 9pt;
background-color: #eeeeee; color: #0000FF}
.bt {font-size: 9pt; border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px;
border-left-width: 0px; height: 16px; width: 80px; background-color: #eeeeee; cursor: hand}
.tx1 { height: 20px; width: 30px; font-size: 9pt; border: 1px solid; border-color: black black
#000000; color: #0000FF}
-->
</style>
</head>
<body bgcolor="#FFFFFF" text="#000000">
<form name="form1" method="post" action="process.asp" enctype="multipart/form-data" >
<table width="71%" border="1" cellspacing="0" cellpadding="5" align="center"
bordercolordark="#CCCCCC" bordercolorlight="#000000">
<tr bgcolor="#CCCCCC">
<td height="22" align="left" valign="middle" bgcolor="#CCCCCC"> Sobina
的圖文上傳界面</td>
</tr>
<tr align="left" valign="middle" bgcolor="#eeeeee">
<td bgcolor="#eeeeee"> <br>
</td>
</tr>
<tr align="center" valign="middle">
<td align="left" id="upid" height="122">
<p>圖象路徑:
<input type="file" name="img" style="width:400" class="tx1" value="">
</p>
<p>圖象說明:
<input type="text" name="imginfo">
</p>
</td>
</tr>
<tr align="center" valign="middle" bgcolor="#eeeeee">
<td bgcolor="#eeeeee" height="2">
<input type="submit" name="Submit" value="· 提交 ·" class="bt">
<input type="reset" name="Submit2" value="· 重置 ·" class="bt">
</td>
</tr>
</form>
</body>
</html>
------------------------------------------------------------------------
process.asp
------------------------------------------------------------------------
<!--#include file="../bin/strCnn.asp"-->
<%
response.expires=0
'目的：將二進(jìn)制字符轉(zhuǎn)換成普通字符
Function bin2str(binstr)
Dim varlen,clow,ccc,skipflag
skipflag=0
ccc = ""
varlen=LenB(binstr)
For i=1 To varlen
If skipflag=0 Then
clow = MidB(binstr,i,1)
If AscB(clow) > 127 Then
ccc =ccc & Chr(AscW(MidB(binstr,i+1,1) & clow))
skipflag=1
Else
ccc = ccc & Chr(AscB(clow))
End If
Else
skipflag=0
End If
Next
bin2str = ccc
End Function
'目的：把表單中的圖象數(shù)據(jù)分離出來(lái)
'其中參數(shù)formsize為表單數(shù)據(jù)大小，formdata為表單的總數(shù)據(jù)
Function ImageUp(formsize,formdata)
bncrlf=chrb(13) & chrb(10)
divider=leftb(formdata,instrb(formdata,bncrlf)-1) 'formdata第一個(gè)bncrlf左邊的數(shù)據(jù)
datastart=instrb(formdata,bncrlf & bncrlf)+4'兩個(gè)bncrlf右邊的數(shù)據(jù)的起始位
dataend=instrb(datastart+1,formdata,divider)-datastart
Imageup=midb(formdata,datastart,dataend)
End Function
'目的：把表單中的變量值取出
'其中參數(shù)varName為要尋找的字段變量，strTXT為已從圖象中分離出來(lái)的的所有文本
Function findVar(varName,strTxt)
startPos=1
strLen=len(varName)+2
'表單中可能有多個(gè)同名變量(用在有主表與明細(xì)表中的數(shù)據(jù)更新中）
for i=1 to len(strTXT)
varStart=instr(startPos,strTXT,varName)+strLen+3
varEnd=instr(varStart,strTXT,"--")-2
varValLen=varEnd-varStart
inVar=mid(strTXT,varStart,varValLen)
findVar=findVar & inVar
startPos=instr(varStart,strTXT,varName)
if startPos=0 then exit for'如果找不到則退出循環(huán)
findVar=findVar & ","' 以","作為多個(gè)同名變量值間的分隔符,實(shí)際上本例倒不需要
next
End function
FormSize = Request.TotalBytes
FormData = Request.BinaryRead( FormSize )
Image = ImageUp(FormSize,Formdata)
'以下兩步不能省略，否則取不出文字
strTXT=mid(formdata,instr(formdata,image)+len(image)+1) '取出文字
strTXT=bin2str(strTXT)'二進(jìn)制轉(zhuǎn)換成普通文字
imginfo=findVar("imginfo",strTXT)'相當(dāng)于request.form("imginfo")
'MyArray = Split(imginfo, ",", -1, 1)'分離從imginfo返回的多個(gè)值,在本例子中不用
Application.Lock
set objCnn=Server.CreateObject("ADODB.Connection")
objCnn.Open strCnn
set rec=Server.CreateObject("ADODB.Recordset")
rec.Open "imgtest",objCnn,1,3
rec.addnew '如果你只想更新一個(gè)記錄，則可使這句失效
rec("imginfo")=imginfo
if Len(Image)>1 then
rec("img").Appendchunk Image '把圖象寫入數(shù)據(jù)庫(kù)
end if
rec.update
rec.close:set rec=nothing
set objCnn=Nothing
Application.Unlock
'輸出圖象說明和圖象
response.write imginfo
response.write "<img src='showimg.asp?imginfo=" & imginfo & "' boder=0>"
%>
-----------------------------------------------------------------------
showimg.asp
-----------------------------------------------------------------------
<!--#include file="../bin/strCnn.asp"-->
<%
response.expires=0
response.buffer=true
response.clear
Response.ContentType = "image/*"
set objCnn=server.CreateObject("ADODB.connection")
objCnn.Open strCnn
strsql="SELECT * FROM imgtest where imginfo='" & Request.QueryString("imginfo") & "'"
set rec=objCnn.Execute(strsql)
Response.BinaryWrite rec("img")
rec.close:set rec=nothing
set objCnn=nothing
%>
需要提醒的是: Access數(shù)據(jù)庫(kù)要把顯示圖象的showimg.asp文件作相應(yīng)調(diào)整
showimg.asp
-----------------------------------------------------------------------
<!--#include file="../bin/strCnn.asp"-->
<%
response.expires=0
response.buffer=true
response.clear
Response.ContentType = "image/bmp"
set objCnn=server.CreateObject("ADODB.connection")
objCnn.Open strCnn
strsql="SELECT * FROM imgtest where imginfo='" & Request.QueryString("imginfo") & "'"
set rec=objCnn.Execute(strsql)
Dim intSize,objOle,realSize
Const cntHeader=76'Access數(shù)據(jù)OLE開頭多了76 bytes
intize=rec("img").ActualSize
objOle=rec("img").GetChunk(cntHeader)'76 bytes
realSize=rec("img").GetChunk(intFldSize-cntHeader)'獲取圖像的真正bytes
Response.BinaryWrite relSize'輸出圖象
rec.close:set rec=nothing
set objCnn=nothing
%>
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