Exception in thread “main“ java.sql.SQLException: Connections could not be acquired from the underly

之前搜索都是配置项问题：
1.端口号 ip地址
2.账号密码

    <named-config name="greemysql"><property name="driverClass">com.mysql.jdbc.Driver</property><property name="jdbcUrl">jdbc:mysql://192.168.115.23:3306/school?useSSL=false</property><property name="user">root</property><property name="password">ok</property><property name="initialPoolSize">10</property><property name="maxPoolSize">100</property><property name="checkoutTimeout">3000</property><property name="maxIdleTime">30</property><property name="minPoolSize">10</property></named-config>

但是我这个呆比错误原因是我的配置项文件命名错误

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Exception in thread “main“ java.sql.SQLException: Connections could not be acquired from the underly

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