mysql配置utf8字符集

show variables like '%char%';ERROR 2006 (HY000): MySQL server has gone awayNo connection. Trying to reconnect...Connection id:    2Current database: *** NONE ***+--------------------------+--------------------------------+| Variable_name            | Value                          |+--------------------------+--------------------------------+| character_set_client     | utf8                           || character_set_connection | utf8                           || character_set_database   | utf8                           || character_set_filesystem | binary                         || character_set_results    | utf8                           || character_set_server     | utf8                           || character_set_system     | utf8                           || character_sets_dir       | D:\xampp\mysql\share\charsets\ |+--------------------------+--------------------------------+8 rows in set (0.01 sec)MariaDB [(none)]> show variables like 'collation%';+----------------------+-----------------+| Variable_name        | Value           |+----------------------+-----------------+| collation_connection | utf8_unicode_ci || collation_database   | utf8_unicode_ci || collation_server     | utf8_unicode_ci |+----------------------+-----------------+3 rows in set (0.00 sec)