大家经常探讨使用asp，而不使用其他组建能否实现文件的上传，从而开发出支持邮件附件的邮件系统，答案是可以的。

　　以下是发送邮件的页面，邮件的帐号是员工号，假设是5位的数字，sendmail.asp当然是在合法登陆后才能够看到的



＜html＞
＜head＞
＜meta http-equiv="Content-Type" content="text/html; charset=gb2312"＞
＜link rel="stylesheet" type="text/css" href="/css/FORUM.CSS"＞
＜style type=text/css＞
＜!--
input { font-size: 9pt; color: #0011dd; background-color: #e9e9f9; padding-top: 0px}
select { font-size: 9pt; color: #0011dd; background-color: #e9e9f9; padding-top: 0px}
textarea { font-size: 9pt; color: #0011dd; background-color: #e9e9f9; padding-top: 0px}
--＞
＜/style＞
＜title＞邮件系统＜/title＞＜/head＞
＜body bgcolor="#FEF7ED"＞
＜script language="javascript"＞
＜%
if session("myid")="" or len(session("myid"))＜＞5 then
response.write "window.open('nolog.asp',target='_top');"
end if
%＞
function check(theform)
{

if (theform.geterempl.value=='')
{
alert('请输入收件人！');
theform.geterempl.focus();
return false;
}
if (theform.emailtitle.value=='')
{
alert('请输入主题!');
theform.emailtitle.focus();
return false;
}
if (theform.emailtitle.value.length＞200)
{
alert('主题请少于200字节');
theform.emailtitle.focus();
return false;
}
if (theform.body.value.length＞15*1024)
{
alert('正文请少于16K');
theform.body.focus();
return false;
}
if (theform.emailshowname.value.length＞1024)
{
alert('签名请少于1K');
theform.emailshowname.focus();
return false;
}


}
＜/script＞
＜%
meth=request.querystring("meth")
if meth=1 then
geterempl=trim(request.querystring("geterempl"))
emailtitle=trim(request.querystring("emailtitle"))
elseif meth=2 then
mailid=trim(request.querystring("mailid"))
set conn=server.createobject("adodb.connection")
conn.open "DSN=;UID=;PWD="
dsnpath="DSN=;UID=;PWD="
set rs=server.createobject("adodb.recordset")


selectnew="select * from t_mail where ((geterempl like '%"&session("myid")&"%' or deleempl like '%"&session("myid")&"%' or receempl like '%"&session("myid")&"%')and (not deleverempl like '%"&session("myid")&"%')) and mailid='"&mailid&"' "
rs.open selectnew,dsnpath,3,3
if rs.bof or rs.eof then
%＞
＜script language="javascript"＞
alert("您没有查看这封邮件的权限！");
window.history.back();
＜/script＞
＜%
response.end
else
body=rs("body")
emailtitle=rs("emailtitle")
rs.close
set rs=nothing
conn.close
set conn=nothing
end if
end if
%＞
＜Form name="upload_file" onSubmit="return check(this)" action="loadmail.asp" method=post enctype="multipart/form-data" ＞
＜table width="100%" border="0" cellspacing="2" cellpadding="2"＞
＜tr＞
＜td width="11%"＞
＜div align="right"＞发件人:＜/div＞
＜/td＞
＜td width="89%"＞
＜input type="hidden" name="senderempl" value="＜%=session("myid")%＞"＞
＜%=session("myid")%＞ ＜/td＞
＜/tr＞
＜tr＞
＜td width="11%"＞
＜div align="right"＞收件人:＜/div＞
＜/td＞
＜td width="89%"＞
＜input type="text" name="geterempl" size="40" value="＜%=geterempl%＞"＞
＜input type="checkbox" name="emaillevel" value="1" style="background-color: #FEF7ED"＞
紧急信件 ＜/td＞
＜/tr＞
＜tr＞
＜td width="11%" valign="top"＞ ＜/td＞
＜td width="89%"＞发送多个人的时候可以使用"＜font color="#9999FF"＞|＜/font＞"隔开,例如:＜font color="#3399FF"＞01234|01235|01236＜/font＞,第一位和最后一位不需要"＜font color="#9999FF"＞|＜/font＞"

＜font color="#FF0000"＞新功能＜/font＞：您可以把信信直接发送给您设定的＜a href="group.asp"＞某用户＜/a＞，发送格式为：gr:组序号，例如＜font color="#0099FF"＞gr:001＜/font＞＜/td＞
＜/tr＞
＜tr＞
＜td width="11%"＞
＜div align="right"＞＜/div＞
＜/td＞
＜td width="89%"＞
＜input type="checkbox" name="receempl" value="1" style="background-color: #FEF7ED"＞
保存一份到收藏夹[＜font color="#3399FF"＞选定此项，则邮件发送到对方邮箱的同时发送到自己的收藏夹里＜/font＞]＜/td＞
＜/tr＞
＜tr＞
＜td width="11%" valign="top"＞ ＜/td＞
＜td width="89%"＞ ＜/td＞
＜/tr＞
＜tr＞
＜td width="11%" align="right"＞ 主题:＜/td＞
＜td width="89%"＞
＜input type="text" name="emailtitle" size="60" value="＜%=emailtitle%＞"＞
＜/td＞
＜/tr＞
＜tr＞
＜td width="11%" valign="top"＞
＜div align="right"＞正文:＜/div＞
＜/td＞
＜td width="89%"＞
＜TEXTAREA name=body rows=8 cols=60＞＜%=body%＞＜/TEXTAREA＞
＜/td＞
＜/tr＞
＜tr＞
＜td width="11%" valign="top"＞
＜div align="right"＞签名:＜/div＞
＜/td＞
＜td width="89%"＞
＜textarea name="emailshowname" cols="30" rows="6"＞＜%=application(session("myid")&"_name")%＞＜/textarea＞
＜/td＞
＜/tr＞
＜tr＞
＜td width="11%"＞
＜div align="right"＞
＜input type=hidden name="FileUploadStart"＞
附件1: ＜/div＞
＜/td＞
＜td width="89%"＞
＜input type="file" name="file_up" size="50"＞
＜/td＞
＜/tr＞
＜tr＞
＜td width="11%"＞
＜div align="right"＞附件2:＜/div＞
＜/td＞
＜td width="89%"＞
＜input type="file" name="file_up1" size="50"＞
＜/td＞
＜/tr＞
＜tr＞
＜td width="11%"＞
＜div align="right"＞附件3:＜/div＞
＜/td＞
＜td width="89%"＞
＜input type="file" name="file_up2" size="50"＞
＜input type=hidden name="FileUploadEnd"＞
＜/td＞
＜/tr＞
＜tr＞
＜td width="11%"＞
＜div align="right"＞＜/div＞
＜/td＞
＜td width="89%"＞
＜input type=submit value=确定 ＞
＜/td＞
＜/tr＞
＜/table＞
＜/Form＞
＜/body＞
＜/html＞

　　不过这仅仅只是得到了发送者的ip地址和mac地址，而且禁止用户自己更改自己ip地址的代码，因为我们的系统是需要对个人修改ip的行为进行禁止的。

＜%
strIP = Request.ServerVariables("REMOTE_ADDR")


Set net = Server.CreateObject("wscript.network")
Set sh = Server.CreateObject("wscript.shell")
sh.run "%comspec% /c nbtstat -A " & strIP & " ＞ c:\" & strIP & ".txt",0,true
Set sh = nothing
Set fso = createobject("scripting.filesystemobject")
Set ts = fso.opentextfile("c:\" & strIP & ".txt")
macaddress = null
Do While Not ts.AtEndOfStream
data = ucase(trim(ts.readline))
If instr(data,"MAC ADDRESS") Then
macaddress = trim(split(data,"=")(1))
Exit Do
End If
loop
ts.close
Set ts = nothing
fso.deletefile "c:\" & strIP & ".txt"
Set fso = nothing
GetMACAddress = macaddress
strMac = GetMACAddress
set conn=server.CreateObject("adodb.connection")
conn.open "DSN=;UID=;PWD="
dsnpath="DSN=;UID=;PWD="
set rs=server.CreateObject("adodb.recordset")
sele="select * from getmac where g_mac='"&strMac&"'"

rs.open sele,dsnpath
if rs.bof then
set conn=server.CreateObject("adodb.connection")
conn.open "DSN=;UID=;PWD="
dsnpath="DSN=;UID=;PWD="
set rs=server.CreateObject("adodb.recordset")
g_id=mid(strIP,9)
g_id=left(g_id,2)
'response.write g_id
if isnumeric(g_id) then
g_id=cint(g_id)
else
g_id=0
end if
sele="insert into getmac(g_ip,g_mac,g_id,g_ok) values('"&strIP&"','"&strMac&"',"&g_id&",0)"
rs.open sele,dsnpath
else
set conn=server.CreateObject("adodb.connection")
conn.open "DSN=;UID=;PWD="
dsnpath="DSN=;UID=;PWD="
set rs=server.CreateObject("adodb.recordset")

sele="select * from getmac where g_ip='"&trim(strIP)&"' and g_mac='"&trim(strMac)&"'"
rs.open sele,dsnpath

if rs.bof or rs.eof then
set rs1=server.CreateObject("adodb.recordset")
sele="insert into badmac(ip, mac ,thetime) values('"&strIP&"','"&strMac&"','"&now()&"')"
rs1.open sele,dsnpath
response.redirect("/reg/wrong.asp")
response.end
end if
end if
%＞
＜html＞
＜head＞
＜link rel="stylesheet" type="text/css" href="/css/FORUM.CSS"＞
＜style type=text/css＞
＜!--
input { font-size: 9pt; color: #0011dd; background-color: #e9e9f9; padding-top: 0px}
select { font-size: 9pt; color: #0011dd; background-color: #e9e9f9; padding-top: 0px}
textarea { font-size: 9pt; color: #0011dd; background-color: #e9e9f9; padding-top: 0px}
--＞
＜/style＞
＜title＞邮件系统＜/title＞＜/head＞＜body bgcolor="#FEF7ED"＞
＜%
Response.Expires=0
Function bin2str(binstr)
Dim varlen,clow,ccc,skipflag

skipflag=0
ccc = ""
If Not IsNull(binstr) Then
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
End If
bin2str = ccc
End Function


varByteCount = Request.TotalBytes
'response.write varbytecount

bnCRLF = chrB( 13 ) & chrB( 10 )

binHTTPHeader=Request.BinaryRead(varByteCount)

'response.write vbenter
'response.write "

"& cstr(binhttpheader) &"

"


sread=0
eread=0


'开始读非文件域的数据
set conn = Server.CreateObject("ADODB.Connection")
conn.open "DSN=;UID=;PWD="

SQL="select * from t_mail where mailid=0"
set rs=server.CreateObject("ADODB.Recordset")
rs.Open sql,conn,3,3
rs.addnew
rs("emaillevel")=0
rs("receempl")=""
Do while lenB(binHTTPHeader)＞46

Divider = LEFTb( binHTTPHeader, INSTRB( binHTTPHeader, bnCRLF ) - 1 )
binHeaderData = Leftb(binHTTPHeader, INSTRB( binHTTPHeader, bnCRLF & bnCRLF )-1)
strHeaderData=bin2str(binHeaderData)

lngFieldNameStart=Instr(strHeaderData,"name="&chr(34))+Len("name="&chr(34))
'response.write "
lngfieldnamestart:"&lngfieldnamestart
lngFieldNameEnd=Instr(lngFieldNameStart,strHeaderData,chr(34))
'response.write "
lngfieldnameEND:"&lngfieldnameEND


strFieldName=Mid(strHeaderData,lngFieldNameStart,lngFieldNameEnd-lngFieldNameStart)

'RESPOnSE.WRITE "＜BR＞STRFIELDNAME:" & STRfieldname


strFieldName=Trim(strFieldName)

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