MySql的autoReconnect与autoReconnectForPools属性对比
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autoReconnect会向客户端抛出一个SQLException，但会尝试重新建立连接。
autoReconnectForPools将在每次执行SQL之前尝试ping服务器。以下引用至MySql官方说明：https://dev.mysql.com/doc/connector-j/5.1/en/connector-j-reference-configuration-properties.html
autoReconnect
Should the driver try to re-establish stale and/or dead connections? If enabled the driver will throw an exception for a queries issued on a stale or dead connection, which belong to the current transaction, but will attempt reconnect before the next query issued on the connection in a new transaction. The use of this feature is not recommended, because it has side effects related to session state and data consistency when applications don't handle SQLExceptions properly, and is only designed to be used when you are unable to configure your application to handle SQLExceptions resulting from dead and stale connections properly. Alternatively, as a last option, investigate setting the MySQL server variable "wait_timeout" to a high value, rather than the default of 8 hours.
Default: false
Since version: 1.1内容总结
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