开源协议与 mariadb-java-client

GPL 与 LGPL

• GPLv2: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html

一般商业项目中，我们需慎重使用 LICENSE 为 GPL 的开源组件。

从 mysql-connector-java 到 mariadb-java-client

<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>8.0.31</version>
</dependency>

mysql-connector-java 的 LICENSE 为 GPLv2。需要替换为 mariadb-java-client。

<!-- https://mvnrepository.com/artifact/org.mariadb.jdbc/mariadb-java-client -->
<dependency>
    <groupId>org.mariadb.jdbc</groupId>
    <artifactId>mariadb-java-client</artifactId>
    <version>3.0.8</version>
</dependency>

jdbc:mariadb scheme (MariaDB Connector/J 3.0.3 Release Notes)

It occurs that mysql AND mariadb driver are sometimes available in the same classpath, so, now, driver only accept jdbc:mariadb: by default.

If for some reason, connection string is required to be jdbc:mysql: Driver will be used only if connection string contain 'permitMysqlScheme'. example : jdbc:mysql:localhost/test?permitMysqlScheme.

在 3.0.3 版本之前（不含 3.0.3），用 mariadb-java-client 来连接 MySQL 可以使用 jdbc:mysql:，否则只能使用 jdbc:mariadb:（除非增加 permitMysqlScheme 参数）。

参考链接

• https://github.com/mysql/mysql-connector-j/blob/release/8.0/LICENSE
• https://mariadb.com/kb/en/mariadb-connector-j-303-release-notes/

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