实现了画笔功能，提供调色板可以选择颜色，以及可选画笔的粗细，使用的是jdk1.5版本-Realized brush function, provided the color palette to choose, as well as the optional brush thickness, using jdk1.5 version
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001111s ]
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:0.083474s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001652s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.010667s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.022844s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003981s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001028s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004078s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015808s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001921s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 252920 [ RunTime:0.014419s ]
