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After idea uses c3p0 connection pool to connect to SQL database, database content cannot be displayed
2022-06-13 02:21:00 【CSDN Q & A】
I am here lib The file is normally imported c3p0,mchange as well as mysql Of jar package , Revised c3p0 Of iml file , However, an error is reported after the operation Network is unreachable: connectv
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