java.sql.SQLException: java.lang.ClassCastException: class java.math.BigInteger cannot be cast to**

pom 文件裏面mysql 驅動版本不匹配引起的

 

<dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>8.0.15</version>
<!--      <version>5.1.20</version>-->
   </dependency>