java.sql.SQLException: Unknown system variable 'query_cache_size'

Question

I have a app running with JDBC and get data from MySQL, but I can\'t build it because of this error :

java.sql.SQLException: Unknown system variable \'query         


        

Answer 1

I stuck on this issue, spend full one day and finally i got solution.

Solution :

1) Use exact mysql-connector-java jar or dependency as your mysql version.
2) if your mysql version is 8 or 6+ try to use this "com.mysql.cj.jdbc.Driver" driver class.