Activiti启报错: Cannot create PoolableConnectionFactory (Could not create connection to database server

Posted 2022-08-06 不允许摆烂

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报错信息如下

Caused by: org.activiti.engine.ActivitiException: couldn't check if tables are already present using metadata: Cannot create PoolableConnectionFactory (Could not create connection to database server.)

部分截图

解决思路

导入的mysql包版本太新，所对应的mysql数据库跟不上版本

我这个是因为我本地是8.0的mysql版本,但是引入的jar是5.7的,就会报这个版本对不上的错,把jar包版本和数据库保持一致即可,驱动也要记得换,8.0的话要加上cj

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