Problem description

The following error occurred while connecting Hikari. Initialization failed
ERROR 27468 — [nio-8080-exec-1] com.zaxxer.hikari.pool.HikariPool : HikariPool-1 – Exception during pool initialization.

Cause analysis:

It may be a driving problem

The MySQL version on this machine is higher than the driver version used. Unable to connect. You can check the version of MySQL and compare it with the driver used. Then look at dependency import.

Solution:

My solution is as follows: because my MySQL version is 8.0, then I use the connection package of 5. So the connection failed. So I first import the 8.0 connection package, and then modify the dependent version number. Note: if you use the 8.0 connection package, you need to change the class forname to: com.mysql.cj.jdbc.Driver. Then the problem was solved

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