A ResourcePool could not acquire a resource from its primary factory or souce的解决办法

遇到A ResourcePool could not acquire a resource from its primary factory or source主要是数据库链接有问题 1.数据库驱动配置有误:driver=com.mysql.jdbc.Driver 2.数据库链接地址有误:url=jdbc:mysql://localhost:3306/test 3.密码和帐号有误:username
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