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，
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
解决办法一：启动类中加入注解：@SpringBootApplication(exclude={DataSourceAutoConfiguration.class,HibernateJpaAutoConfiguration.class})
解决方法二：在Application.properties文件内配置数据源即可。代码如下：
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
我仔细的检查了一下，也加了注解，试了一下，我靠，没用啊，人生呐，真是改不完的bedug，
只好用出终极大招，拷贝我自己的代码，删除项目，从新从svn更新项目，导入运行，哎呦我去。怎么还是这问题？难道是我项目配置问题?不对啊，我其他的项目都没有问题啊。束手无策，只好求助小碗（一个认真工作的大佬）；
通过反复调试，终于找到了。问题所在，pom.xml里面有一个错误的配置，
<dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency>
删了就可以运行，微服务也可以注册。配置文件请大家仔细检查。配置文件不对，什么都是扯淡。