如何改进IP地址匹配代码以支持多种数据库格式?
教你从左到右匹配一部分
原始代码从左到右匹配一部分:
dim aa, iplist, ip, foundaa = "11.9.67.180"iplist = array("99.88", "110.52", "43.80.235", "11.9.")found = falsefor each ip in iplist if instr(aa, ip) > 0 then found = true exit for end ifnextif found then response.write "ok" response.endend if
改动后只能完全匹配:
dim aa, iplist, ip, found, dbiplistaa = request.servervariables("remote_addr")dbiplist = rs("ip")iplist = split(dbiplist, ",")found = falsefor each ip in iplist ip = trim(ip) if instr(aa, ip) > 0 then found = true exit for end ifnextif found then response.write "ok" response.endend if
要同时处理两种数据库内容格式,需修改如下:
Dim aa, ipList, ip, found, dbIPListaa = Request.ServerVariables("REMOTE_ADDR")dbIPList = Rs("ip")' 增加一个去除双引号的操作,确保两种数据库内容格式都能正常处理dbIPList = Replace(dbIPList, """, """)ipList = Split(dbIPList, ",")found = FalseFor Each ip In ipList ip = Trim(ip) If InStr(aa, ip) > 0 Then found = True Exit For End IfNextIf found Then Response.Write "ok" Response.EndEnd If