解决参考文章：https://blog.csdn.net/hengyunabc/article/details/78762097
spring boot启动报错如下：
Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled. 2018-05-04 17:12:03.806 ERROR 3300 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter : *************************** APPLICATION FAILED TO START *************************** Description: Cannot determine embedded database driver class for database type NONE Action: If you want an embedded database please put a supported one on the classpath. If you have database settings to be loaded from a particular profile you may need to active it (no profiles are currently active). Disconnected from the target VM, address: '127.0.0.1:60654', transport: 'socket' Process finished with exit code 1
看第一行，我们可以把日志等级 设置未debug等级。
再启动，可以看到更详细的日志信息