java.sql.SQLException: Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8_general_ci,C

java.sql.SQLException: Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8_general_ci,COERCIBLE) for operation ‘=’,意思是說字符編碼不同,不能進行比較,也就是說數據庫內部的編碼都不同,有的數據是latin1_swedish_ci,有的數據是utf8_gener
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