摘要:
问题:Could not get JDBC Connection; nested exception is java.sql.SQLException: com.mchange.v2.c3p0.ComboPooledDataSource [ java.beans.IntrospectionExcep 阅读全文
摘要:
解决Type safety: The expression of type List needs unchecked conversion to conform to 在方法前加上这句话就可以了@SuppressWarnings("unchecked") 例如: @SuppressWarnings( 阅读全文