java连接mysql数据库的驱动,里边包含两个版本:5.1.47、8.0.28
也可从以下两个地址免费下载:
1. https://repo1.maven.org/maven2/mysql/mysql-connector-java/
2. https://cdn.mysql.com//archives/mysql-connector-java-8.0/mysql-connector-java-8.0.28.zip
3. https://cdn.mysql.com//archives/mysql-connector-java-5.1/mysql-connector-java-5.1.47.zip
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