铁路校友-我拆过的坑cycx

主页:www.j6f.cn知识星球,快手号、抖音号、视频号、微信公众号、百家号、个人博客网站,同名。

cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection;

cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure


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