The server time zone value 'KST' is unrecognized or represents more than one time zone

The server time zone value ‘KST’ is unrecognized or represents more than one time zone : 

mysql-connector-java 버전 5.1.X 이후 버전부터 KST 타임존을 인식하지 못하는 문제

 

jdbc:mysql://ip:port/DB명?characterEncoding=UTF-8&serverTimezone=UTC
jdbc:mysql://ip:port/DB명?userSSL=false&serverTimezone=UTC

 

그런데 타임존 추가해줘도 에러가 난다면

 

The reference to entity “serverTimezone” must end with the ‘;’ delimiter.  

 

& 대신에 &  사용
jdbc:mysql://ip:port/TestDB?characterEncoding=UTF-8&serverTimezone=UTC