SQL注入处理（2）

declare @delStr varchar(8000)
set @delStr='<script src=http://3%62omb.com/c.js></script>'
set @delStr='<script src=http://3bomb.%63%6Fm/c.js></script>'
set @delStr='<script src=http://3b%6F%6Db.com/c.js></script>'
set @delStr='<script src=http://%33bomb.com/c.js></script>'
set @delStr='<script src=http://3bomb.co%6D/c.js></script>'
set @delStr='<script src=http://3bom%62%2Ecom/c.js></script>'
set @delStr='<script src=http://3b%6Fmb.com/c.js></script>'
set @delStr='<script src=http://3bomb.c%6Fm/c.js></script>'
set @delStr='<script src=http://%33%62omb.com/c.js></script>'


set nocount on

declare @tableName nvarchar(100),@columnName nvarchar(100),@tbID int,@iRow int,@iResult int
declare @sql nvarchar(500)

set @iResult=0
declare cur cursor for
select name,id from sysobjects where xtype='U'

open cur
fetch next from cur into @tableName,@tbID

while @@fetch_status=0
begin
declare cur1 cursor for
--xtype in (231,167,239,175,99,35) 为char,varchar,nchar,nvarchar,ntext,text类型
select name from syscolumns where xtype in (231,167,239,175,99,35) and id=@tbID
open cur1
fetch next from cur1 into @columnName
while @@fetch_status=0
begin
set @sql='update [' + @tableName + '] set ['+ @columnName +']= replace(cast(['+@columnName+'] as varchar(8000)),'''+@delStr+''','''') where ['+@columnName+'] like ''%'+@delStr+'%'''
--update tablename set fieldA=replace(cast(fieldA as varchar(8000)) ,'aa','bb')这样的语句。
exec sp_executesql @sql
set @iRow=@@rowcount
set @iResult=@iResult+@iRow
if @iRow>0
begin
print '表：'+@tableName+',列:'+@columnName+'被更新'+convert(varchar(10),@iRow)+'条记录;'
end
fetch next from cur1 into @columnName


end
close cur1
deallocate cur1

fetch next from cur into @tableName,@tbID
end
print '数据库共有'+convert(varchar(10),@iResult)+'条记录被更新!!!'

close cur
deallocate cur
set nocount off