I set set lc_time_names='zh_CN'; in the database;
The query using SELECT @@lc_time_names; has changed.
Then the sql query select dayname(CURRENT_DATE); is also correct (shows Monday), But when using Java to connect to the database, the query is still in English?

Have you looked for the answer yourself?
Tried:
1. Change the English system to Chinese, it doesn’t work.
2. Run the SQL statement in Java and set it up, it is also correct, but so A bit cumbersome.