数据连接

获取数据库连接失败: 获取数据库连接失败:Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.

参考下图方法排查一下噢
以后出现类似创建数据源测试连接失败也可以参考这个文档解决：https://wiki.smartbi.com.cn/pages/viewpage.action?pageId=76677652