mysql| problem
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Environment: 1, MySQL database version: MySQL4.1.72, MySQL driver: mysql-connector-java-3.1.73, Environment: Windows platform 4, the installation of MySQL database specified character-set as GBK
Problems encountered: The use of JDBC access to the database, JDBC Url:jdbc:mysql://localhost:3306/club, read-write database display Chinese are normal. But in the MySQL console query, the Chinese are shown as? The reason is: MySQL more than 4.1 version of the addition of several variables, the default case character_set_client, Character_set_connection, character_set_results value is latin1 character_set_client | latin1character_set_connection | Latin1character_set_database | Gbkcharacter_set_results | Latin1character_set_server | Gbkcharacter_set_system | UTF8 so in the console see the Chinese record as? The workaround is to set the Default-character-set Mysql-uuser-ppassword--DEFAULT-CHARACTER-SET=GBK test When the console is started
Summary: 1, MySQL4.1 above version, MySQL jdbc Driver3.0.16 above version, the JDBC URL does not need to bring the USEUNICODE=TRUE&ENCODINGCHARACTER=GBK, The JDBC driver automatically detects the encoding specified by the MySQL server's variable (character_set_server) at the time of the connection, and then converts the Java Unicode string to the specified character set to the MySQL server.2, MySQL4.1.7 version of the database, Character-set for GBK, if the console see garbled, start the console with parameters--DEFAULT-CHARACTER-SET=GBK
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