日期:2014-02-27 浏览次数:20801 次
请诸位大虾能对其中的不正或不良这处予以指正。
我想循序渐进,先讲一个简单的,单个图片文件保存到数据库。
这个范例共包括三个ASP文件和一个数据库(一个表),全部在同一目录下。
1、tblImage 表结构(ACCESS 2000)
sn 自动编号 序列号
content-type 文本 图片类型
image OLE 对象 图片数据
2、SimpleImageToData.asp:上传表单及保存图片到数据库的代码部分,主要文件。
<%@ Language=VBScript %>
<% option explicit %>
<%
'从一个完整路径中析出文件名称
function getFileNamefromPath(strPath)
getFileNamefromPath = mid(strPath,instrrev(strPath,"\")+1)
end function
'定义数据库连接字符串
dim cnstr
cnstr = "driver={Microsoft Access Driver (*.mdb)};dbq=" & server.MapPath("./upload.mdb")
%>
<HTML>
<HEAD>
<title>单个图像保存到数据库</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</HEAD>
<body>
<p><a href="SimpleImageToData.asp">上传图片</a>
<a href="ShowImageListFromData.asp">显示图片</a><hr></p>
<%
if request.ServerVariables("REQUEST_METHOD") = "POST" then
dim sCome, sGo, binData, strData
dim posB, posE, posSB, posSE
dim binCrlf
dim strPath, strFileName, strContentType
binCrlf = chrb(13)&chrb(10) '定义一个单字节的回车换行符
set sCome = server.CreateObject("adodb.stream")
sCome.Type = 1 '指定返回数据类型 adTypeBinary=1,adTypeText=2
sCome.Mode = 3 '指定打开模式 adModeRead=1,adModeWrite=2,adModeReadWrite=3
sCome.Open
sCome.Write request.BinaryRead(request.TotalBytes)
sCome.Position = 0
binData = sCome.Read
'response.BinaryWrite binData '调试用:显示提交的所有数据
'response.Write "<hr>" '调试用
set sGo = server.CreateObject("adodb.stream")
sGo.Type = 1
sGo.Mode = 3
sGo.Open
posB = 1
posB = instrb(posB,binData,binCrlf)
posE = instrb(posB+1,binData,binCrlf)
'response.Write posB & " | " & posE & "<br>"
sCome.Position = posB+1
sCome.CopyTo sGo,posE-posB-2
sGo.Position = 0
sGo.Type = 2
sGo.Charset = "gb2312"
strData = sGo.ReadText
sGo.Close
'response.Write strData & "<hr>"
posSB = 1
posSB = instr(posSB,strData,"filename=""") + len("filename=""")
posSE = instr(posSB,strData,"""")
if posSE > posSB then
strPath = mid(strData,posSB,posSE-posSB)
'response.Write "本地路径:" & strPath & "<br>"
'response.Write "文件名:" & getFileNamefromPath(strPath) & "<br>"
posB = posE
posE = instrb(posB+1,binData,binCrlf)
'response.Write posB & " | " & posE & "<br>"
sGo.Type = 1
sGo.Mode = 3
sGo.Open
sCome.Position = posB
sCome.CopyTo sGo,posE-posB-1
sGo.Position = 0
sGo.Type = 2
sGo.Charset = "gb2312"
strData = sGo.ReadText
sGo.Close
strContentType = mid(strData,16) '此处因为固定的,所以省略查找 :-)
'response.Write "图片类型:" & strContentType & "<hr>"
posB = posE+2
posE = instrb(posB+1,binData,binCrlf)
'response.Write posB & " | " & pos