报错信息：
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
[2m2018-08-06 10:04:25.845[0;39m [31mERROR[0;39m [35m11256[0;39m [2m---[0;39m [2m[ main][0;39m [36mo.s.b.d.LoggingFailureAnalysisReporter [0;39m [2m:[0;39m
APPLICATION FAILED TO START
Description:
Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.
Reason: Failed to determine a suitable driver class
Action:
Consider the following:
If you want an embedded database (H2, HSQL or Derby), please put it on the classpath.
If you have database settings to be loaded from a particular profile you may need to activate it (no profiles are currently active).
原因：由于添加了数据库组件，所以autoconfig会去读取数据源配置，新建的项目还没有配置数据源，所以会导致异常出现。
解决办法：
在启动类添加如下内容
即：@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class})