数据库连接问题之：Caused by: java.sql.SQLException: Connections could not be acquired from the underlying database!
2017-03-01 20:21
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要么是驱动问题(没加载到工程中去或者其他问题)要么是账号密码或者url或者driver写错
driver：com.mysql.jdbc.Driver
url:jdbc:mysql://localhost:3306/数据库名称
driver：com.mysql.jdbc.Driver
url:jdbc:mysql://localhost:3306/数据库名称
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