QR code encode and decode 的源代码，编码部分详细标分析并注释的源代码，UI显示部分，将日文进行汉化，显示为中文方便读者使用，将编码和解码放置在同一个工作区内，方便调试代码，编码后生成QR code image，保存为bmp图像，利用解码器解码QR code image,将编码内容,image，版本等相关信息显示在UI上。
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002245s ]
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:0.085517s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002319s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001892s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002379s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003726s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001928s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003419s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015767s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002344s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 282967 [ RunTime:0.001366s ]
