【异常解决】To prevent a memory leak, the JDBC Driver has been forcibly unregistered.

registered the JDBC driver [com.alibaba.druid.proxy.DruidDriver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
org.apache.catalina.loader.WebappClassLoaderBase clearReferencesJdbc registered the JDBC driver [com.mysql.jdbc.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.

以上是异常大致信息。

核心差不多是这个样子：To prevent a memory leak, the JDBC Driver has been forcibly unregistered.

网上答案千千万，我的错误是mysql数据库的密码错了。

密码错了，密码，密码！