Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDataSource
INFO AbstractPoolBackedDataSource:462 - Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDataSource [ acquireIncrement -> ...
原文：com.mchange.v2.c3p0.ComboPooledDataSource
com.mchange.v .c p .ComboPooledDataSource：數據庫連接池的一種 C P 是一個開放源代碼的JDBC連接池，它在lib目錄中與Hibernate一起發布,包括了實現jdbc 和jdbc 擴展規范說明的Connection和Statement池的DataSources對象。 .需要的jar包：c p . . . .jar .ComboPooledDataSour ...
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Caused by: java.lang.IllegalStateException: Failed to introspect Class [com.mchange.v2.c3p0.ComboPooledDataSource] from ClassLoader
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