调用java类打印的列子，程序首先搜索默认打印机，如果没有就报错，这里就是打印文件自身。- Transfers a java kind of printing Liezi, the procedure first
searches tacitly approves the printer, if has not been wrong on the
newspaper, here prints document oneself.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001489s ]
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:0.082037s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000855s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001249s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000977s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003364s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001033s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003703s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015256s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001231s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 53211 [ RunTime:0.012658s ]
