Exception in thread "main" java.lang.ClassCastException: oracle.jdbc.driver.T4CConnection cannot be
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Exception in thread "main" java.lang.ClassCastException: oracle.jdbc.driver.T4CConnection cannot be cast to com.mysql.jdbc.Connection
解决这个问题只需要把 import com.mysql.jdbc.Connection; 改为： import java.sql.Connection;即可。
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