求求大家帮帮忙看看
mysql-connector-java-5.0.8-bin.jar包可能有问题，可以换成mysql-connector-java-5.1.40.jar 试试，下载地址如下：
https://repo.spring.io/plugins-release/MySQL/mysql-connector-java/5.1.40/mysql-connector-java-5.1.40.jar
