关于图片上传的例子在网上有很多文章和原代码。但是每次上论坛浏览帖子的时候都是看到很多网友对图片上传感到头疼和麻烦。其实这个问题也是曾经让我感到头疼。也看过了不少的文章和代码。现在我写的这篇文章是把我比较喜欢的一篇代码和动网里的高手对这篇代码优化后再加上我增加一些代码结合出来的！呵呵，其实这篇文章是沾了写这篇代码的人(稻香居士)和动网里那些高手的光。:)
好了，不说废话了。开始来搭建所需要的环境和数据结构！
先新建一个名字叫photo的文件夹。(我在这里就是把图片上传到这个文件夹里的。)建立一个名字叫database的数据库。再接着建立一个名字叫sFile的表。表里设计四个字段分别是id(int),image(varchar),image1(varchar),image2(varchar)。我这里用的数据库是SQL。
相关的文件
register.asp
1<html>
2<head>
3<title>文件</title>
4<meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
5</head>
6<body>
7<form action="save.asp" method="post" name="form1">
8<table align="center" border="1" cellpadding="0" cellspacing="0" width="50%">
9<tr>
10<td width="20%"><a href="#" onclick="javascript:window.open('/reg_upload.asp',null,' left=40%,top=40%,height=250,width=470,status=yes,toolbar=no,menubar=no,resizable=yes,copyhistory=yes,scrollbars=yes,location=no,status=no,titlebar=no')">图片上传</a></td>
11<td width="80%">
12<input name="myface" type="text"/>
13<input name="myface1" type="text"/>
14<input name="myface2" type="text"/>
15(此处用户不必填图片上传后自动生成) </td>
16</tr>
17<tr>
18<td align="center" colspan="2">
19<input name="Submit" type="submit" value="提交"/>
20<input name="Submit2" type="reset" value="重设"/>
21</td>
22</tr>
23</table>
24</form>
25</body>
26</html>
reg_upload.asp
1<html>
2<head>
3<title></title>
4<meta content="text/html; charset=utf-8" http-equiv="Content-Type"/>
5<link href="css/style.css" rel="stylesheet" type="text/css"/>
6</head>
7<body leftmargin="0" topmargin="0">
8<br/>
9<br/>
10<br/>
11<table align="center" bgcolor="#000000" border="0" cellspacing="1" height="152" width="90%">
12<tr>
13<td align="center" bgcolor="#FFFFFF" height="34"><font color="#FFFF33"><b><font color="#000000" size="4">选择图片</font></b></font></td>
14</tr>
15<tr>
16<td bgcolor="#FFFFFF">
17<form action="upfile.asp" enctype="multipart/form-data" method="post" name="form">
18<input name="filepath" type="hidden" value="photo"/>
19<input name="act" type="hidden" value="upload"/>
20<input name="file1" size="30" type="file"/><br/>
21<input name="file2" size="30" type="file"/><br/>
22<input name="file3" size="30" type="file"/>
23<input class="tl" name="Submit" type="submit" value="粘 贴"/>
24</form>
25</td>
26</tr>
27</table>
28</body>
29</html>
upfile.asp
1<html>
2<head>
3<title>文件上传</title>
4</head>
5<body>
dim arr(3)
dim upload,file,formName,formPath,iCount,filename,fileExt,i
set upload=new upload_5xSoft ''建立上传对象
formPath=upload.form("filepath")
''在目录后加(/)
if right(formPath,1)<>"/" then formPath=formPath&"/"
iCount=0
i=0
for each formName in upload.file ''列出所有上传了的文件
set file=upload.file(formName) ''生成一个文件对象
if file.filesize<0 then
response.write "<font size="2">请先选择你要上传的图片 [ <a href="#" onclick="history.go(-1)">重新上传</a> ]</font>"
response.end
end if
if file.filesize>100000 then
response.write "<font size="2">图片大小超过了限制 [ <a href="#" onclick="history.go(-1)">重新上传</a> ]</font>"
response.end
end if
if fileEXT<>".gif" and fileEXT<>".jpg" then
response.write "<font size="2">文件格式不对 [ <a href="#" onclick="history.go(-1)">重新上传</a> ]</font>"
response.end
end if
fileExt=lcase(right(file.filename,4))
filename=formPath&year(now)&month(now)&day(now)&hour(now)&minute(now)&second(now)&file.FileName
arr(i)=filename
i=i+1
if file.FileSize>0 then ''如果 FileSize > 0 说明有文件数据
file.SaveAs Server.mappath(filename) ''保存文件
' response.write file.FilePath&file.FileName&" ("&file.FileSize&") => "&formPath&File.FileName&" 成功!<br/>"
iCount=iCount+1
end if
set file=nothing
next
if instr(arr(0),".")=0 and instr(arr(1),".")=0 and instr(arr(2),".")=0 then
response.write "<font size="2">请先选择你要上传的图片 [ <a href="#" onclick="history.go(-1)">重新上传</a> ]</font>"
response.end
end if
if instr(arr(0),".")<>0 then
response.write "<script>opener.document.forms[0].myface.value='" & arr(0) & "'</script>"
else
response.write "<script>opener.document.forms[0].myface.value=''</script>"
end if
if instr(arr(1),".")<>0 then
response.write "<script>opener.document.forms[0].myface1.value='" & arr(1) & "'</script>"
else
response.write "<script>opener.document.forms[0].myface1.value=''</script>"
end if
if instr(arr(2),".")<>0 then
response.write "<script>opener.document.forms[0].myface2.value='" & arr(2) & "'</script>"
else
response.write "<script>opener.document.forms[0].myface2.value='' </script>"
end if
set upload=nothing ''删除此对象
session("upface")="done"
Htmend iCount&" 个文件上传结束!"
sub HtmEnd(Msg)
set upload=nothing
response.write "<html><head><meta content='3 url=""javascript:window.close();""' http-equiv="Refresh"/></head><body><center><br/><br/>文件上传成功<br/>谢谢你的支持！<br/>本窗口三秒后自动关闭</center></body></html>"
response.end
end sub
1</body>
2</html>
upload.inc
1<script language="VBSCRIPT" runat="SERVER">
2
3dim upfile_5xSoft_Stream
4
5Class upload_5xSoft
6
7dim Form,File,Version
8
9Private Sub Class_Initialize
10dim iStart,iFileNameStart,iFileNameEnd,iEnd,vbEnter,iFormStart,iFormEnd,theFile
11dim strDiv,mFormName,mFormValue,mFileName,mFileSize,mFilePath,iDivLen,mStr
12Version=""
13if Request.TotalBytes<1 then Exit Sub
14set Form=CreateObject("Scripting.Dictionary")
15set File=CreateObject("Scripting.Dictionary")
16set upfile_5xSoft_Stream=CreateObject("Adodb.Stream")
17upfile_5xSoft_Stream.mode=3
18upfile_5xSoft_Stream.type=1
19upfile_5xSoft_Stream.open
20upfile_5xSoft_Stream.write Request.BinaryRead(Request.TotalBytes)
21
22vbEnter=Chr(13)&Chr(10)
23iDivLen=inString(1,vbEnter)+1
24strDiv=subString(1,iDivLen)
25iFormStart=iDivLen
26iFormEnd=inString(iformStart,strDiv)-1
27while iFormStart < iFormEnd
28iStart=inString(iFormStart,"name=""")
29iEnd=inString(iStart+6,"""")
30mFormName=subString(iStart+6,iEnd-iStart-6)
31iFileNameStart=inString(iEnd+1,"filename=""")
32if iFileNameStart>0 and iFileNameStart<iFormEnd then
33iFileNameEnd=inString(iFileNameStart+10,"""")
34mFileName=subString(iFileNameStart+10,iFileNameEnd-iFileNameStart-10)
35iStart=inString(iFileNameEnd+1,vbEnter&vbEnter)
36iEnd=inString(iStart+4,vbEnter&strDiv)
37if iEnd>iStart then
38mFileSize=iEnd-iStart-4
39else
40mFileSize=0
41end if
42set theFile=new FileInfo
43theFile.FileName=getFileName(mFileName)
44theFile.FilePath=getFilePath(mFileName)
45theFile.FileSize=mFileSize
46theFile.FileStart=iStart+4
47theFile.FormName=FormName
48file.add mFormName,theFile
49else
50iStart=inString(iEnd+1,vbEnter&vbEnter)
51iEnd=inString(iStart+4,vbEnter&strDiv)
52
53if iEnd>iStart then
54mFormValue=subString(iStart+4,iEnd-iStart-4)
55else
56mFormValue=""
57end if
58form.Add mFormName,mFormValue
59end if
60
61iFormStart=iformEnd+iDivLen
62iFormEnd=inString(iformStart,strDiv)-1
63wend
64End Sub
65
66Private Function subString(theStart,theLen)
67dim i,c,stemp
68upfile_5xSoft_Stream.Position=theStart-1
69stemp=""
70for i=1 to theLen
71if upfile_5xSoft_Stream.EOS then Exit for
72c=ascB(upfile_5xSoft_Stream.Read(1))
73If c > 127 Then
74if upfile_5xSoft_Stream.EOS then Exit for
75stemp=stemp&Chr(AscW(ChrB(AscB(upfile_5xSoft_Stream.Read(1)))&ChrB(c)))
76i=i+1
77else
78stemp=stemp&Chr(c)
79End If
80Next
81subString=stemp
82End function
83
84Private Function inString(theStart,varStr)
85dim i,j,bt,theLen,str
86InString=0
87Str=toByte(varStr)
88theLen=LenB(Str)
89for i=theStart to upfile_5xSoft_Stream.Size-theLen
90if i>upfile_5xSoft_Stream.size then exit Function
91upfile_5xSoft_Stream.Position=i-1
92if AscB(upfile_5xSoft_Stream.Read(1))=AscB(midB(Str,1)) then
93InString=i
94for j=2 to theLen
95if upfile_5xSoft_Stream.EOS then
96inString=0
97Exit for
98end if
99if AscB(upfile_5xSoft_Stream.Read(1))<>AscB(MidB(Str,j,1)) then
100InString=0
101Exit For
102end if
103next
104if InString<>0 then Exit Function
105end if
106next
107End Function
108
109Private Sub Class_Terminate
110form.RemoveAll
111file.RemoveAll
112set form=nothing
113set file=nothing
114upfile_5xSoft_Stream.close
115set upfile_5xSoft_Stream=nothing
116End Sub
117
118
119Private function GetFilePath(FullPath)
120If FullPath <> "" Then
121GetFilePath = left(FullPath,InStrRev(FullPath, "\"))
122Else
123GetFilePath = ""
124End If
125End function
126
127Private function GetFileName(FullPath)
128If FullPath <> "" Then
129GetFileName = mid(FullPath,InStrRev(FullPath, "\")+1)
130Else
131GetFileName = ""
132End If
133End function
134
135Private function toByte(Str)
136dim i,iCode,c,iLow,iHigh
137toByte=""
138For i=1 To Len(Str)
139c=mid(Str,i,1)
140iCode =Asc(c)
141If iCode<0 Then iCode = iCode + 65535
142If iCode>255 Then
143iLow = Left(Hex(Asc(c)),2)
144iHigh =Right(Hex(Asc(c)),2)
145toByte = toByte & chrB("&H"&iLow) & chrB("&H"&iHigh)
146Else
147toByte = toByte & chrB(AscB(c))
148End If
149Next
150End function
151End Class
152
153
154Class FileInfo
155dim FormName,FileName,FilePath,FileSize,FileStart
156Private Sub Class_Initialize
157FileName = ""
158FilePath = ""
159FileSize = 0
160FileStart= 0
161FormName = ""
162End Sub
163
164Public function SaveAs(FullPath)
165dim dr,ErrorChar,i
166SaveAs=1
167if trim(fullpath)="" or FileSize=0 or FileStart=0 or FileName="" then exit function
168if FileStart=0 or right(fullpath,1)="/" then exit function
169set dr=CreateObject("Adodb.Stream")
170dr.Mode=3
171dr.Type=1
172dr.Open
173upfile_5xSoft_Stream.position=FileStart-1
174upfile_5xSoft_Stream.copyto dr,FileSize
175dr.SaveToFile FullPath,2
176dr.Close
177set dr=nothing
178SaveAs=0
179end function
180End Class
181</script>
save.asp
1 dim dsn,conn
2dsn="driver={sql server};server=127.0.0.1;uid=sa;pwd=;database=database"
3set conn=server.createobject("adodb.connection")
4conn.open dsn
1 dim file,file1,file2
2file=trim(request.form("myface"))
3file1=trim(request.form("myface1"))
4file2=trim(request.form("myface2"))
5set rs=server.createobject("adodb.recordset")
6sql="Insert Into sFile(image,image1,image2) Values('"& file &"','"& file1&"','"& file2&"')"
7conn.execute(sql)
8response.redirect "ok.asp"
呵呵，代码多了点。复制以上的代码到你的机器上运行是不是你想要的结果！至于显示图片相信大家都明白了吧！我就不必多说了。值得一提的是此代码不仅可以用于图片上传而是任何格式的文件都可以哦，至于文件大小也可以由你自己来定义哦！还有的就是我只定义了上传三个要是要上传更多的话稍为改下代码就可以了。仔细看代码就知道了是不是觉得很方便和实用。这个只不过是在我解决这个问题的时候用的一种方法而已。你要是有更好的方法来实现也可以来EMAIL告诉我！互相学习共同进步。第一次写文章可能表达方面有语法问题。要是有什么问题也可以来EMAIL告诉我！我的邮箱：[email protected],QQ:11313112。时间不早了，我要睡觉了！呼噜呼噜zzzZZZ....
(特别感谢hooke等高手一直以来的技术支持)小汪仔于2002/5/26晚