Failed to obtain JDBC Connection； nested exception is java.sql.SQLException: com.mysql.jdbc.Driver

记录idea报错，

1.引用外部库 mysql-connector-java-8.0.26

<dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>8.0.26</version>
</dependency>

 2. 引入最新版的c3p0

<dependency>
    <groupId>com.mchange</groupId>
    <artifactId>c3p0</artifactId>
    <version>0.9.5.5</version>
</dependency>

3.连接的驱动地址为"com.mysql.cj.jdbc.Driver"

连接驱动改为：com.mysql.cj.jdbc.Driver