Registered driver with driverClassName=oracle.jdbc.driver.OracleDriver was not found

使用spring boot集成mybatis时，在服务器上插入数据时报错 Registered driver with driverClassName=oracle.jdbc.driver.OracleDriver was not found 
将配置数据库文件中的  spring.datasource.driver-class-name=oracle.jdbc.driver.OracleDriver
            改成：  spring.datasource.driver-class-name=oracle.jdbc.OracleDriver   去掉 driver