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    3. [JDBC] 解决java.sql.SQLException: Connections could not be acquired from the underlying database 错误

    [JDBC] 解决java.sql.SQLException: Connections could not be acquired from the underlying database 错误

    技术2022-07-11  89

    JFinal中用c3p0连接池连接MySQL报错 java.sql.SQLException: Connections could not be acquired from the underlying database!

    看看连接信息 连接的url，用户名，密码，数据库有没有写错

    这个用户是否有权限访问这个数据库

    Processed: 0.009, SQL: 9