https://blog.youkuaiyun.com/BBBBBingozh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/BBBBBingo/article/details/78071440https://blog.youkuaiyun.com/BBBBBingo/article/details/78071440BBBBBingoSat, 23 Sep 2017 16:06:24 +0800https://blog.youkuaiyun.com/BBBBBingo/article/details/77877997https://blog.youkuaiyun.com/BBBBBingo/article/details/77877997BBBBBingoThu, 07 Sep 2017 10:22:15 +0800 0isNotBlank(str) 等价于 str != null && str.length > 0 && str.trim().length > 0同理isEmpty 等价于 str == null || str.length == 0isBlank 等价于 str == null || str.len]]>https://blog.youkuaiyun.com/BBBBBingo/article/details/77868104https://blog.youkuaiyun.com/BBBBBingo/article/details/77868104BBBBBingoWed, 06 Sep 2017 16:26:19 +0800https://blog.youkuaiyun.com/BBBBBingo/article/details/77862677https://blog.youkuaiyun.com/BBBBBingo/article/details/77862677BBBBBingoWed, 06 Sep 2017 10:15:49 +0800mysql -u root -p 数据库名称   2、查询所有数据表     >show tables;   3、查询表的字段信息     >desc 表名称;   4.1修改表名     alter table table1 rename table2;   4.2添加表字段     alter table table1 add transactor ]]>https://blog.youkuaiyun.com/BBBBBingo/article/details/77709475https://blog.youkuaiyun.com/BBBBBingo/article/details/77709475BBBBBingoWed, 30 Aug 2017 10:37:47 +0800https://blog.youkuaiyun.com/BBBBBingo/article/details/77643627https://blog.youkuaiyun.com/BBBBBingo/article/details/77643627BBBBBingoMon, 28 Aug 2017 10:37:54 +0800https://blog.youkuaiyun.com/BBBBBingo/article/details/77643575https://blog.youkuaiyun.com/BBBBBingo/article/details/77643575BBBBBingoMon, 28 Aug 2017 10:35:55 +0800https://blog.youkuaiyun.com/BBBBBingo/article/details/77574243https://blog.youkuaiyun.com/BBBBBingo/article/details/77574243BBBBBingoFri, 25 Aug 2017 15:33:06 +0800https://blog.youkuaiyun.com/BBBBBingo/article/details/77568245https://blog.youkuaiyun.com/BBBBBingo/article/details/77568245BBBBBingoFri, 25 Aug 2017 11:06:40 +0800https://blog.youkuaiyun.com/BBBBBingo/article/details/77528715https://blog.youkuaiyun.com/BBBBBingo/article/details/77528715BBBBBingoThu, 24 Aug 2017 12:49:08 +0800https://blog.youkuaiyun.com/BBBBBingo/article/details/77471336https://blog.youkuaiyun.com/BBBBBingo/article/details/77471336BBBBBingoTue, 22 Aug 2017 09:48:08 +0800 alter table film alter column rental_duratio]]>https://blog.youkuaiyun.com/BBBBBingo/article/details/77181092https://blog.youkuaiyun.com/BBBBBingo/article/details/77181092BBBBBingoTue, 15 Aug 2017 09:42:49 +0800 /static/common/js/echarts.js"> /static/common/js/map]]>https://blog.youkuaiyun.com/BBBBBingo/article/details/77099338https://blog.youkuaiyun.com/BBBBBingo/article/details/77099338BBBBBingoFri, 11 Aug 2017 16:04:59 +0800https://blog.youkuaiyun.com/BBBBBingo/article/details/77099002https://blog.youkuaiyun.com/BBBBBingo/article/details/77099002BBBBBingoFri, 11 Aug 2017 15:44:58 +0800https://blog.youkuaiyun.com/BBBBBingo/article/details/77057834https://blog.youkuaiyun.com/BBBBBingo/article/details/77057834BBBBBingoThu, 10 Aug 2017 16:23:06 +0800https://blog.youkuaiyun.com/BBBBBingo/article/details/77053930https://blog.youkuaiyun.com/BBBBBingo/article/details/77053930BBBBBingoThu, 10 Aug 2017 16:03:08 +0800