c3p0连接数据库时报出这样的错误!
解决办法是:mysql驱动包的版本不适配,更换mysql驱动包,建议更换为比原来小的版本
比如我原来用的就是mysql-connector-java-5.1.7-bin.jar
结果这个版本就是运行不成功,
我换成mysql-connector-java-5.1.47.jar之后,问题就解决了!!!!!!
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