主要是对库存信息的管理，可以对添加，查看，删除等操作。
代码中详细的解说了界面的设计。-Mainly for the management of inventory information, you can add, view, delete, etc. operations. Code is explained in detail in the interface design.
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JavaApplication3 test src nbproject build build.xml manifest.mf
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002106s ]
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:0.101910s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.003893s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.003130s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.003212s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003978s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002500s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.005342s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016416s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002794s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 176473 [ RunTime:0.001297s ]
