java包

下载mysql的jar包

官网地址:http://dev.mysql.com/downloads/connector/
参考地址:https://blog.csdn.net/u010523770/article/details/52240946

下载c3p0的jar包

官网地址:https://sourceforge.net/projects/c3p0/
参考地址:https://blog.csdn.net/qq_32965187/article/details/86147216

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