salam
in moshkel mitoone az chandin mored nashat begire. lotfan in mavared ro barrasi konid omidvaram ke dorost beshe.
1- default character encoding mysql ro utf-8 kon
2- oon jadvali ro ke dari bahash kar mikoni ro utf-8 kon
3- oon setoonhayi ro ke mikhay farsi beferesti dakhel ro utf-8 kon
4- ba tavajoh be inke java khodesh utf-8 hasteshva ba karhayi ke dar bala anjam dadi mysql ham utf-8 shode hala bayad connectionet ham utf-8 bashe baraye in kar az url zir estefade kon
jdbc:mysql://hostname

ortnumber/databasename?user=username&password=yourpassword&useUnicode=true&characterEncoding=utf8