无组件上传图片到数据库中，最完整解决方案

作者：itzn.com　发布时间：2008-01-31 00:17:11　来源：互联网

无组件上传图片到数据库中，最完整解决方案
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up.htm

<html>
<head>
<title><% =webname %></title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<link rel="stylesheet" href="main.css" type="text/css">
<style type="text/css">
<!--
.tx1 { height: 20px; width: 30px; font-size: 9pt; border: 1px solid; border-color: black black

#000000; color: #0000FF}
-->
</style>

function turnon(obj1,id){
obj1.style.background=bgc_on[id];
}
function turnoff(obj1,id){
obj1.style.background=bgc_off[id];
}

//-->
</script>
<SCRIPT language=javascript>
function check_input()
{
if (Frm.pic.value=="")
{ alert("请选择要上传的图片");
return false;
}
if (Frm.type.value=="")
{ alert("请选择图片类型");
return false;
}
if (Frm.thetext.value=="")
{ alert("请输入照片说明");
return false;
}
return true;
}
</SCRIPT>
</head>

<table width=755 cellpadding=0 cellspacing=0 border=0 bgcolor=#ffffff align="center" bordercolor=#000000>
<tr>
<td height=400 width=180 bgcolor=#D1E9D5 style="border-right: 1px #0E801E solid">
<table width=100% height=100% cellpadding=0 cellspacing=0 border=0 align="center" bordercolor=#000000>
<tr><td height=30 align="center" class=L15><font color=#E96D08>欢迎你：<% =username %> 管理中心</font>
<tr><td height=23 align="center" class=L15 bgcolor=#4CAD12 style="border-top:0px #0E801E solid; border-bottom:1px #0E801E solid;"><font color=#C2F009 class=yinying>管理中心</font>
<tr><td height=20 class=L13>

<tr><td height=5>
<tr><td>
</table>
<td>
<%
set rs=server.createobject("adodb.recordset")
sql="select * from photo where author='"&username&"'"
rs.open sql,conn,1,1
%>
<table cellpadding=0 cellspacing=0 border=0 width=100% height=100%>
<tr><td height=3>
<tr><td height=3 bgcolor=#ffffff background=img/bj3.gif>
<tr><td height=20 valign="bottom" bgcolor=#eeeeee> 现在位置： 98243班 - 管理中心 - 添加新闻
<tr><td height=3 bgcolor=#eeeeee style="border-bottom: 1px #cccccc solid"><p style="font-size:1pt">
<tr><td height=20 valign="bottom"> <font color=green><% =username %>：你一共上传了 <font color=red><% =rs.recordcount %></font> 张照片</font> <a href="adminphoto.asp"><font color=red><u>管理以前上传的照片</u></font></a>
<tr><td bgcolor=#ffffff valign=top>
<table cellpadding=0 cellspacing=0 border=0 width=95% height=100% align="center">
<form action=addphoto.asp method=post name=Frm onSubmit="return check_input()" enctype="multipart/form-data">
<tr><td height=20 colspan=2>
<tr><td height=25 width=15% align="right" class=L13>选择照片： <td> <input NAME="pic" TYPE="FILE" class="tx1" style="width:300"> <font color=red>拒绝色情、写真图等</font>

</table>

</body>
</html>

fupload.inc

<SCRIPT RUNAT=SERVER LANGUAGE=VBSCRIPT>
'限制上传图片大小
Dim UploadSizeLimit

'********************************** 得到上传数据 **********************************
Function GetUpload()
Dim Result
Set Result = Nothing
If Request.ServerVariables("REQUEST_METHOD") = "POST" Then 'Request method must be "POST"
Dim CT, PosB, Boundary, Length, PosE
CT = Request.ServerVariables("HTTP_Content_Type") 'reads Content-Type header
If LCase(Left(CT, 19)) = "multipart/form-data" Then 'Content-Type header must be "multipart/form-data"
'This is upload request.
'Get the boundary and length from Content-Type header
PosB = InStr(LCase(CT), "boundary=") 'Finds boundary
If PosB > 0 Then Boundary = Mid(CT, PosB + 9) 'Separetes boundary
Length = CLng(Request.ServerVariables("HTTP_Content_Length")) 'Get Content-Length header
if "" & UploadSizeLimit<>"" then
UploadSizeLimit = clng(UploadSizeLimit)
if Length > UploadSizeLimit then
' on error resume next 'Clears the input buffer
' response.AddHeader "Connection", "Close"
' on error goto 0
Request.BinaryRead(Length)
Err.Raise 2, "GetUpload", "Upload size " & FormatNumber(Length,0) & "B exceeds limit of " & FormatNumber(UploadSizeLimit,0) & "B"
exit function
end if
end if

If Length > 0 And Boundary <> "" Then 'Are there required informations about upload ?
Boundary = "--" & Boundary
Dim Head, Binary
Binary = Request.BinaryRead(Length) 'Reads binary data from client

'Retrieves the upload fields from binary data
Set Result = SeparateFields(Binary, Boundary)
Binary = Empty 'Clear variables
Else
Err.Raise 10, "GetUpload", "Zero length request ."
End If
Else
Err.Raise 11, "GetUpload", "No file sent."
End If
Else
Err.Raise 1, "GetUpload", "Bad request method."
End If
Set GetUpload = Result
End Function

Function SeparateFields(Binary, Boundary)
Dim PosOpenBoundary, PosCloseBoundary, PosEndOfHeader, isLastBoundary
Dim Fields
Boundary = StringToBinary(Boundary)

PosOpenBoundary = InstrB(Binary, Boundary)
PosCloseBoundary = InstrB(PosOpenBoundary + LenB(Boundary), Binary, Boundary, 0)

Set Fields = CreateObject("Scripting.Dictionary")

Do While (PosOpenBoundary > 0 And PosCloseBoundary > 0 And Not isLastBoundary)
'Header and file/source field data
Dim HeaderContent, FieldContent
'Header fields
Dim Content_Disposition, FormFieldName, SourceFileName, Content_Type
'Helping variables
Dim Field, TwoCharsAfterEndBoundary
'Get end of header
PosEndOfHeader = InstrB(PosOpenBoundary + Len(Boundary), Binary, StringToBinary(vbCrLf + vbCrLf))

'Separates field header
HeaderContent = MidB(Binary, PosOpenBoundary + LenB(Boundary) + 2, PosEndOfHeader - PosOpenBoundary - LenB(Boundary) - 2)

'Separates field content
FieldContent = MidB(Binary, (PosEndOfHeader + 4), PosCloseBoundary - (PosEndOfHeader + 4) - 2)

'Separates header fields from header
GetHeadFields BinaryToString(HeaderContent), Content_Disposition, FormFieldName, SourceFileName, Content_Type

'Create one field and assign parameters
Set Field = CreateUploadField()
Field.Name = FormFieldName
Field.ContentDisposition = Content_Disposition
Field.FilePath = SourceFileName
Field.FileName = GetFileName(SourceFileName)
Field.ContentType = Content_Type
Field.Value = FieldContent
Field.Length = LenB(FieldContent)

Fields.Add FormFieldName, Field

'Is this ending boundary ?
TwoCharsAfterEndBoundary = BinaryToString(MidB(Binary, PosCloseBoundary + LenB(Boundary), 2))
'Binary.Mid(PosCloseBoundary + Len(Boundary), 2).String
isLastBoundary = TwoCharsAfterEndBoundary = "--"
If Not isLastBoundary Then 'This is not ending boundary - go to next form field.
PosOpenBoundary = PosCloseBoundary
PosCloseBoundary = InStrB(PosOpenBoundary + LenB(Boundary), Binary, Boundary )
End If
Loop
Set SeparateFields = Fields
End Function

'********************************** Utilities **********************************
Function BinaryToString(str)
strto = ""
for i=1 to lenb(str)
if AscB(MidB(str, i, 1)) > 127 then
strto = strto & chr(Ascb(MidB(str, i, 1))*256+Ascb(MidB(str, i+1, 1)))
i = i + 1
else
strto = strto & Chr(AscB(MidB(str, i, 1)))
end if
next
BinaryToString=strto
End Function

Function StringToBinary(String)
Dim I, B
For I=1 to len(String)
B = B & ChrB(Asc(Mid(String,I,1)))
Next
StringToBinary = B
End Function

'Separates header fields from upload header
Function GetHeadFields(ByVal Head, Content_Disposition, Name, FileName, Content_Type)
Content_Disposition = LTrim(SeparateField(Head, "content-disposition:", ";"))
Name = (SeparateField(Head, "name=", ";")) 'ltrim
If Left(Name, 1) = """" Then Name = Mid(Name, 2, Len(Name) - 2)
FileName = (SeparateField(Head, "filename=", ";")) 'ltrim
If Left(FileName, 1) = """" Then FileName = Mid(FileName, 2, Len(FileName) - 2)
Content_Type = LTrim(SeparateField(Head, "content-type:", ";"))
End Function

'Separets one filed between sStart and sEnd
Function SeparateField(From, ByVal sStart, ByVal sEnd)
Dim PosB, PosE, sFrom
sFrom = LCase(From)
PosB = InStr(sFrom, sStart)
If PosB > 0 Then
PosB = PosB + Len(sStart)
PosE = InStr(PosB, sFrom, sEnd)
If PosE = 0 Then PosE = InStr(PosB, sFrom, vbCrLf)
If PosE = 0 Then PosE = Len(sFrom) + 1
SeparateField = Mid(From, PosB, PosE - PosB)
Else
SeparateField = Empty
End If
End Function

'Separetes file name from the full path of file
Function GetFileName(FullPath)
Dim Pos, PosF
PosF = 0
For Pos = Len(FullPath) To 1 Step -1
Select Case Mid(FullPath, Pos, 1)
Case "/", "": PosF = Pos + 1: Pos = 0
End Select
Next
If PosF = 0 Then PosF = 1
GetFileName = Mid(FullPath, PosF)
End Function
</SCRIPT>
<SCRIPT RUNAT=SERVER LANGUAGE=JSCRIPT>
//The function creates Field object.
function CreateUploadField(){ return new uf_Init() }
function uf_Init(){
this.Name = null
this.ContentDisposition = null
this.FileName = null
this.FilePath = null
this.ContentType = null
this.Value = null
this.Length = null
}
</SCRIPT>

addphoto.asp



<%
if Request.ServerVariables("REQUEST_METHOD") = "POST" Then
Dim Fields
UploadSizeLimit=100000
Set Fields = GetUpload()
dim Field
For Each Field In Fields.Items
select case Field.name
case "thetext" sss=BinaryToString(Field.value)
case "type" fff=BinaryToString(Field.value)
case "submit" submit=BinaryToString(Field.value)
case "pic"
filename=field.FileName
fileContentType=field.ContentType
filevalue=field.value
end select
next
'---------------
if filename<>"" and fileContentType<>"image/gif" and

fileContentType<>"image/pjpeg" then
%>
<center>
<br><br>
<font color=red size=3>上传的照片应该为GIF或JPG文件！</font><br><br>
<input type="button" value="重填" onclick="history.go( -1 );return

true;">
</center>
<%
else
'------------
'开始输入
'-----------
response.write sss
response.write"<br>"
response.write fff
set rs=server.createobject("ADODB.recordset")
sql = "select * from tb where theid is null"
rs.Open sql,conn,3,3
rs.addnew
rs("author")=username
rs("thetext")=sss
rs("types")=fff
rs("hits")=1
rs("posttime")=now()
rs("photo").appendchunk filevalue

rs.update
rs.close
%>
<br><br>
<center><font color=red

size=3>成功输入个人基本档案！</font><br><br><form method="post"

action="personinf.asp"><input type="submit" value="返回"></form>
</center>
<%
end if
end if
%>

showpic.asp

<%
id=Request("id")
set rs=server.CreateObject("adodb.recordset")
sql="SELECT * FROM tb where theid="&id
rs.Open sql,conn,1,3
response.contenttype="image/gif"
Response.BinaryWrite rs("photo")
%>

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