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mysql-使用druid连接池连接数据库,出现了以下问题,忘各位大神解答

程序员文章站 2022-06-12 11:46:58
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mysql异常

com.mysql.jdbc.exceptions.jorg.apache.ibatis.exceptions.PersistenceException:

Error updating database. Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: 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.

Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: 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.

请各位大神帮帮小弟我,这是出现什么问题

相关标签: mysql 异常