Java项目启动时，oracle 驱动异常

报错信息：项目启动的时候，一直会报“registered driver with driverclassname=oracle.jdbc.driver.oracledriver was not found, trying direct instantiation.”。

原因： Oracle 9i 之后，建议使用 oracle.jdbc.OracleDriver ，而不是 oracle.jdbc.driver.OracleDriver。

官方建议原文：For Oracle 9i onwards you should use oracle.jdbc.OracleDriver rather than oracle.jdbc.driver.OracleDriver as Oracle have stated that oracle.jdbc.driver.OracleDriver is deprecated and support for this driver class will be discontinued in the next major release.

官方文档地址