The driver has not received any packets from the server.

在进行mybatis连接数据库进行操作时，报以下错误；

The driver has not received any packets from the server.

MySQL服务器默认的“wait_timeout”是28800秒即8小时，
意味着如果一个连接的空闲时间超过8个小时，MySQL将自动断开该连接，
而连接池却认为该连接还是有效的(因为并未校验连接的有效性)，
当应用申请使用该连接时，就会导致上面的报错。

解决方案如下：

Linux系统：

修改MySQL的参数，wait_timeout最大为31536000即1年，在my.cnf中加入：
[mysqld]
wait_timeout=31536000
interactive_timeout=31536000

windows：

没有找到my.ini,我的电脑是重启了之后才连接不上的，于是我去查找了mysql服务，结果也找不到，接着我去修改了mysql安装：

在这里勾选跟随系统启动，这样就不会出现连接不上的问题了，对于网络上提出的连接超时不存在的，因为我是重启了系统的，本应该连接也重新计算，所以希望你们不要踩这个坑。

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