开发工具：idea
测试项目：spring cloud服务创建
按网上的操作步骤配置完成对应的配置文件后，启动项目后报错：
Description:
Failed to auto-configure a DataSource: 'spring.datasource.url' is not specified and no embedded datasource could be auto-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).
解决方案：将idea创建的yaml文件格式改为yml即可。
在网上找到的答案基本都是在启动类中增加exclude，如下：
@SpringBootApplication(exclude= {DruidDataSourceAutoConfigure.class,DataSourceAutoConfiguration.class,
DataSourceTransactionManagerAutoConfiguration.class,
HibernateJpaAutoConfiguration.class})
不过实际上大部分都配置了datasource，最后仔细查找发现，idea中创建的application文件类型为”yaml“！！！，不过spring boot只能识别”yml“和”properties“，导致无法读取到springboot配置文件中datasource内容，修改完成之后即可正常启动。