Invalid property 'driverClassName' of bean class [com.mchange.v2.c3p0.ComboPooledDataSource]: Bean property 'driverClassName' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?
c3p0连接中配置jdbc没有driverClassName这个选项，是driverClass，你可以看下com.mchange.v2.c3p0.ComboPooledDataSource这个类的源码，里面是是driverClass
配置文件里面的driverClassName换成 driverClass就可以了