ASP 无限级分类实现(2)

//先取出最高级(parentid=0)的分类

<%
set conn=server.createobject("adodb.connection")
conn.open "Provider=Microsoft.Jet.Oledb.4.0;data source="&server.MapPath("db.mdb")
set rs1=server.createobject("adodb.recordset")
sql1="select * from Classtable where parentid=0 order by classid"
rs1.open sql1,conn,1,1
if rs1.eof or rs1.bof then
response.write"还没分类!"
else
while not rs1.eof
id1=rs1("classid")
name1=rs1("classname")

response.write "*<a href='class.asp?id="&id1&"&name="&name1&"‘>"&name1&"</a><br>"
parentid1=rs1("parentid")
call reclass(id1)
rs1.movenext
wend
end if
rs1.close
set rs1=nothing


sub reclass(id)
‘递归调用函数,生成一个类别代码
set rs=server.createobject("adodb.recordset")
sql="select * from classtable where parentid="&id
rs.open sql,conn,1,1
i=1
while not rs.eof
id0=rs("classid")
classname0=rs("classname")
parentid0=rs("parentid")
classdepth0=rs("classdepth")
brstr=""
for j=1 to classdepth0
brstr=" "&brstr
next
response.write(brstr&"└<a href='class.asp?id="&id0&"&name="&classname0&"‘>"&classname0&"</a><br>")
call reclass(id0)

rs.movenext
i=i+1
wend
rs.close
set rs=nothing
end sub

if request("a")="add" then
call add
end if
if request("name")<>"" then
%>
<table width="80%" align="center" cellpadding="0″ cellspacing="0″>
<form action="class.asp?a=add&id=<%=request("id")%>" method="post">
<tr>
<td> </td>
<td>在<font color="#FF0000″><%=request("name")%></font>添加小类</td>
</tr>
<tr>
<td>类别名:</td>
<td><input name="classname" type="text" id="classname"></td>
</tr>
<tr>
<td> </td>
<td><input type="submit" name="Submit" value="提交"></td>
</tr>
</form>
</table>
<%end if
sub add '添加类别
id=request("id")
classname=request("classname")
set rs=server.createobject("adodb.recordset")
rs.open "select parentid,classdepth from classtable where classid="&id,conn,1,1
parentid=rs(0)
classdepth=rs(1)+1
rs.close
set rs=nothing
sql="INSERT INTO classtable (classname,parentid,classdepth) values ('"&classname&"‘,"&id&","&classdepth&")"
conn.execute sql
response.Write"<script>alert('添加成功!');location.href='class.asp';</script>"
end sub
%>