用java对于xml文件的读取，修改，删除操作的实现。使用不同的类库实现的多个例子。-Using java for xml file to read, modify, delete operations realize. Use a different class library to achieve a number of examples.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001301s ]
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:0.089119s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001124s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001881s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001235s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003741s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001070s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003182s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014613s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001377s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 49782 [ RunTime:0.001336s ]
