An unhandled exception occurred while processing the request.
問題描述：An unhandled exception occurred while processing the request. 出現問題描述：在調試項目過程中，SQL 的連接突然就斷掉了。然后重新連接怎么都鏈接不上，使用 Microsoft SQL ...
原文：An exception occurred while acquiring a poolable resource. Will retry.
我的是mysql connector java . . .jar加到lib下面就行了。或者在pom中加入配置也行。 ...
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