URL de JDBC para la configuración de MySQL para utilizar la codificación de caracteres utf8
MySQL 5.6 Configuración
He configurado/etc/mysql/my.cnf manualmente para usarutf8. Vea abajo:
[mysqld]
character-set-server=utf8
character-sets-dir=/usr/share/mysql/charsets
[mysql]
character-sets-dir=/usr/share/mysql/charsets default-character-set=utf8
[mysqladmin]
character-sets-dir=/usr/share/mysql/charsets default-character-set=utf8
[mysqlcheck]
character-sets-dir=/usr/share/mysql/charsets default-character-set=utf8
[mysqldump]
character-sets-dir=/usr/share/mysql/charsets default-character-set=utf8
[mysqlimport]
character-sets-dir=/usr/share/mysql/charsets default-character-set=utf8
[mysqlshow]
character-sets-dir=/usr/share/mysql/charsets default-character-set=utf8
[client]
character-sets-dir=/usr/share/mysql/charsets default-character-set=utf8
Desde la consola:
mysql> show variables like 'char%';
+--------------------------+----------------------------+
| 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 | /usr/share/mysql/charsets/ |
+--------------------------+----------------------------+
8 rows in set (0.01 sec)
Ahora, para la aplicación web, utilicé ambas direcciones de conexión en Tomcat's.context.xml
url="jdbc:mysql://localhost:3306/test?autoReconnect=true&useUnicode=true&characterEncoding=UTF-8"
url="jdbc:mysql://localhost:3306/test?autoReconnect=true&useUnicode=true&characterEncoding=UTF-8&characterSetResults=utf8&connectionCollation=utf8_general_ci"
Lo anterior no funciona y me da los siguientes para la aplicación.
show variables like 'char%';
+--------------------------+----------------------------+
| Variable_name | Value |
+--------------------------+----------------------------+
| character_set_client | utf8mb4 |
| character_set_connection | utf8 |
| character_set_database | utf8 |
| character_set_filesystem | binary |
| character_set_results | utf8mb4 |
| character_set_server | utf8 |
| character_set_system | utf8 |
| character_sets_dir | /usr/share/mysql/charsets/ |
+--------------------------+----------------------------+
¿Qué podría estar mal aquí? Porque se esta mostrandoutf8mb4 en lugarutf8?