Failed to instantiate [javax.activation.DataSource]com.alibaba.druid.pool.DruidDataSource cannot be

错误：
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.activation.DataSource]: Factory method ‘getDruidDataSource’ threw exception; nested exception is java.lang.ClassCastException: com.alibaba.druid.pool.DruidDataSource cannot be cast to javax.activation.DataSource

导包错了
错误：import javax.activation.DataSource;
正确：import javax.sql.DataSource;

类似的错误：
导入了import com.mysql.jdbc.Connection;
正确应该是import java.sql.Connection;

参考：https://blog.youkuaiyun.com/YKbsmn/article/details/106799195