出现以下错误：
在检查数据库连接信息都不存在任何问题的情况下，
是因为版本的问题，springboot2.1.x版本默认的mysql-connector-java 版本比较高 8.0.x ；
降版本可以解决：
<dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>6.0.6</version> </dependency>
报错 XAConnectionFactory: failed to create pooled connection - DBMS down or unreachable?
2022-05-31
607
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简介：
报错 XAConnectionFactory: failed to create pooled connection - DBMS down or unreachable?
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