https://blog.csdn.net/u013415591/article/details/82692242
https://blog.csdn.net/gx_1_11_real/article/details/81066336
迁移之前没这个问题，原来迁移后没将lower_case_table_names加上，MySQL有点矫情，严格区分大小写。。。
12:08:19,494 [ERROR]-[com.alibaba.druid.filter.logging.Log4jFilter statementLogError 152]-{conn-10088, pstmt-169279} execute error. SELECT t.region_id, t.region_name, t.region_name_en, t.region_code2, t.region_code3 FROM t_region t WHERE t.is_black = 0 AND t.parent_id = ? order by t.sort_order, convert(TRIM(t.region_name_en) USING GBK) asc
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown character set: 'GBK'
vi /etc/my.cnf
增加
lower_case_table_names=1
service mysqld start