无法创建PoolableConnectionFactory [英] Cannot create PoolableConnectionFactory

问题描述

有什么问题？无法连接到数据库？

What is the problem? Can't connect to database?

   org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (
            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.)

推荐答案

这是真正的问题原因：

This is the actual cause of the problem:

导致：
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException：
通信链接失败

Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

你有一个数据库通信链接问题。确保您的应用程序可以访问数据库的网络（并且防火墙不阻止数据库的端口）。

You have a database communication link problem. Make sure that your application have network access to your database (and the firewall isn't blocking ports to your database).

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