代码一:

<%

&apos;--------定义部份------------------ 
Dim  Fy_Post,Fy_Get,Fy_In,Fy_Inf,Fy_Xh,Fy_db,Fy_dbstr 
&apos;自定义需要过滤的字串,用  "防 "  分隔 
Fy_In  =  "’’’’防;防and防exec防insert防select防delete防update防count防*防%防chr防mid防master防 truncate防char防declare防 <防 >防=防 |防-防_ " 
Fy_Inf  =  split(Fy_In, "防 ") 
If  Request.Form < > " "  Then 
For  Each  Fy_Post  In  Request.Form 
For  Fy_Xh=0  To  Ubound(Fy_Inf) 
If  Instr(LCase(Request.Form(Fy_Post)),Fy_Inf(Fy_Xh)) < >0  Then 
Response.Write  " <Script  Language=JavaScript >alert(’’’’网长友情提示黑客大侠↓请不要在参数中包含非法字符尝试注入攻击本站,本站做起来很不容易的.俺是菜鸟,好怕怕,放俺一马吧！给俺留言’’’’); </Script > " 
Response.Write  "非法操作！本站已经给大侠您做了如下记录↓ <br > " 
Response.Write  "操作ＩＰ： "&Request.ServerVariables( "REMOTE_ADDR ")& " <br > " 
Response.Write  "操作时间： "&Now& " <br > " 
Response.Write  "操作页面： "&Request.ServerVariables( "URL ")& " <br > " 
Response.Write  "提交方式：ＰＯＳＴ <br > " 
Response.Write  "提交参数： "&Fy_Post& " <br > " 
Response.Write  "提交数据： "&Request.Form(Fy_Post) 
Response.End 
End  If 
Next 
Next 
End  If 
If  Request.QueryString < > " "  Then 
For  Each  Fy_Get  In  Request.QueryString 
For  Fy_Xh=0  To  Ubound(Fy_Inf) 
If  Instr(LCase(Request.QueryString(Fy_Get)),Fy_Inf(Fy_Xh)) < >0  Then 
Response.Write  " <Script  Language=JavaScript >alert(’’’’网长友情提示黑客大侠↓请不要在参数中包含非法字符尝试注入攻击本站,本站做起来很不容易的.俺是菜鸟,好怕怕,放俺一马吧！给俺留言’’’’); </Script > " 
Response.Write  "非法操作！本站已经给大侠您做了如下记录↓ <br > " 
Response.Write  "操作ＩＰ： "&Request.ServerVariables( "REMOTE_ADDR ")& " <br > " 
Response.Write  "操作时间： "&Now& " <br > " 
Response.Write  "操作页面： "&Request.ServerVariables( "URL ")& " <br > " 
Response.Write  "提交方式：ＧＥＴ <br > " 
Response.Write  "提交参数： "&Fy_Get& " <br > " 
Response.Write  "提交数据： "&Request.QueryString(Fy_Get) 
Response.End 
End  If 
Next 
Next 
End  If 

% >

过滤网址的非法字符串
试试这两种方法:
第一种：
squery=lcase(Request.ServerVariables("QUERY_STRING"))
sURL=lcase(Request.ServerVariables("HTTP_HOST"))

SQL_injdata =":|;|>|<|--|sp_|xp_|\|dir|cmd|^|(|)|+|$|'|copy|format|and|exec|insert|select|delete|update|count|*|%|chr|mid|master|truncate|char|declare"

SQL_inj = split(SQL_Injdata,"|")

For SQL_Data=0 To Ubound(SQL_inj)
if instr(squery&sURL,Sql_Inj(Sql_DATA))>0 Then
Response.Write "SQL通用防注入系统"
Response.end
end if
next

第二种：
SQL_injdata =":|;|>|<|--|sp_|xp_|\|dir|cmd|^|(|)|+|$|'|copy|format|and|exec|insert|select|delete|update|count|*|%|chr|mid|master|truncate|char|declare"

SQL_inj = split(SQL_Injdata,"|")

If Request.QueryString<>"" Then
For Each SQL_Get In Request.QueryString
For SQL_Data=0 To Ubound(SQL_inj)
if instr(Request.QueryString(SQL_Get),Sql_Inj(Sql_DATA))>0 Then
Response.Write "SQL通用防注入系统"
Response.end
end if
next
Next
End If

If Request.Form<>"" Then
For Each Sql_Post In Request.Form
For SQL_Data=0 To Ubound(SQL_inj)
if instr(Request.Form(Sql_Post),Sql_Inj(Sql_DATA))>0 Then
Response.Write "SQL通用防注入系统"
Response.end
end if
next
next
end if

第三种
<%
'--------定义部份------------------
Dim Str_Post,Str_Get,Str_In,Str_Inf,Str_Xh,Str_db,Str_dbstr
'自定义需要过滤的字串,用 "■"分离
Str_In = "'■;■and■exec■insert■select■delete■update■count■*■%■chr■mid■master■truncate■char■declare"
'----------------------------------
%>

<%
Str_Inf = split(Str_In,"■")
'--------POST部份------------------
If Request.Form<>"" Then
For Each Str_Post In Request.Form

For Str_Xh=0 To Ubound(Str_Inf)
If Instr(LCase(Request.Form(Str_Post)),Str_Inf(Str_Xh))<>0 Then
'--------写入数据库----------头-----
Str_dbstr="DBQ="+server.mappath("SqlIn.mdb")+";DefaultDir=;DRIVER={Microsoft Access Driver (*.mdb)};"
Set Str_db=Server.CreateObject("ADODB.CONNECTION")
Str_db.open Str_dbstr
Str_db.Execute("insert into SqlIn(Sqlin_IP,SqlIn_Web,SqlIn_FS,SqlIn_CS,SqlIn_SJ) values('"&Request.ServerVariables("REMOTE_ADDR")&"','"&Request.ServerVariables("URL")&"','POST','"&Str_Post&"','"&replace(Request.Form(Str_Post),"'","''")&"')")
Str_db.close
Set Str_db = Nothing
'--------写入数据库----------尾-----
Response.Write "<Script Language=JavaScript>alert('请不要在参数中包含非法字符尝试注入！');</Script>"
Response.Write "非法操作！系统做了如下记录:<br>"
Response.Write "操作IP："&Request.ServerVariables("REMOTE_ADDR")&"<br>"
Response.Write "操作时间："&Now&"<br>"
Response.Write "操作页面："&Request.ServerVariables("URL")&"<br>"
Response.Write "提交方式：POST<br>"
Response.Write "提交参数："&Str_Post&"<br>"
Response.Write "提交数据："&Request.Form(Str_Post)
Response.End
End If
Next

Next
End If
'----------------------------------

'--------GET部份-------------------
If Request.QueryString<>"" Then
For Each Str_Get In Request.QueryString

For Str_Xh=0 To Ubound(Str_Inf)
If Instr(LCase(Request.QueryString(Str_Get)),Str_Inf(Str_Xh))<>0 Then
'--------写入数据库----------头-----
Str_dbstr="DBQ="+server.mappath("SqlIn.mdb")+";DefaultDir=;DRIVER={Microsoft Access Driver (*.mdb)};"
Set Str_db=Server.CreateObject("ADODB.CONNECTION")
Str_db.open Str_dbstr
Str_db.Execute("insert into SqlIn(Sqlin_IP,SqlIn_Web,SqlIn_FS,SqlIn_CS,SqlIn_SJ) values('"&Request.ServerVariables("REMOTE_ADDR")&"','"&Request.ServerVariables("URL")&"','GET','"&Str_Get&"','"&replace(Request.QueryString(Str_Get),"'","''")&"')")
Str_db.close
Set Str_db = Nothing
'--------写入数据库----------尾-----

Response.Write "<Script Language=JavaScript>alert('请不要在参数中包含非法字符尝试注入！);</Script>"
Response.Write "非法操作！系统做了如下记录:<br>"
Response.Write "操作IP："&Request.ServerVariables("REMOTE_ADDR")&"<br>"
Response.Write "操作时间："&Now&"<br>"
Response.Write "操作页面："&Request.ServerVariables("URL")&"<br>"
Response.Write "提交方式：GET<br>"
Response.Write "提交参数："&Str_Get&"<br>"
Response.Write "提交数据："&Request.QueryString(Str_Get)
Response.End
End If
Next
Next
End If
%>