JAVA开发模式中的工厂模式，采用DAO实现。后面有关于DAO的一些介绍，使不了解DAO的看了后面介绍也可以看懂。-JAVA development model of the factory model, using DAO achieve. On the back DAO definitely, do not understand the DAO read on the back can also understand.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002047s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.089322s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001037s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001019s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003358s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000825s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003936s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015027s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001410s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 51625 [ RunTime:0.020616s ]
