sql注入数据库修复方法
1.第一种情况是 需要将指定的 注入字符串全部替换掉（仅替换注入的字符串为空）
--恢复被注入数据库 --2013-09-26declare @delStr nvarchar(500) set @delStr='</title><style>.' --被注入的字段串的开始采样，从此位置后面的数据都为注入数据/**********以下为操作实体************/ set nocount ondeclare @tableName nvarchar(100),@columnName nvarchar(100),@tbID int,@iRow int,@iResult int declare @sql nvarchar(2000)set @iResult=0 declare cur cursor for select name,id from sysobjects where xtype='U'open cur fetch next from cur into @tableName,@tbIDwhile @@fetch_status=0 begin declare cur1 cursor for select name from syscolumns where xtype in (231,167,239,175, 35, 99) and id=@tbID open cur1 fetch next from cur1 into @columnName while @@fetch_status=0 begin set @sql='update [' + @tableName + '] set ['+ @columnName +']= SUBSTRING([' + @columnName + '],1, PATINDEX( ''%' + @delStr + '%'', [' + @columnName + '])-1) where ['+@columnName+'] like ''%'+@delStr+'%'''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 @columnNameend close cur1 deallocate cur1fetch next from cur into @tableName,@tbID end print '数据库教程共有'+convert(varchar(10),@iResult)+'条记录被更新!!!'close cur deallocate cur set nocount off
