今天下午在启动spring cloud微服务的时候，报了这个错误：

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2018-07-03 20:17:10.295 ERROR 19024 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter :

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APPLICATION FAILED TO START
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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: '127.0.0.1:55393', transport: 'socket'

Process finished with exit code 1

刚开始我以为是端口被占用。果断cmd并输入netstat -aon，找半天没发现占用的端口，然后又网上看了一下，

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转自：https://blog.csdn.net/Loser100/article/details/78190703?locationNum=9&fps=1

SpringBoot启动报错：Cannot determine embedded database driver class for database type NONE

springboot启动时会自动注入数据源和配置jpa

spring.datasource.url=jdbc:mysql://localhost:3306/test
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.max-idle=10
spring.datasource.max-wait=10000
spring.datasource.min-idle=5
spring.datasource.initial-size=5