SpringBoot报错（十） WARN：ationConfigEmbeddedWebApplicationContext

2017-12-25 09:54:11.645  WARN 1852 --- [  restartedMain] ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Tomcat.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.tomcat.jdbc.pool.DataSource]: Factory method 'dataSource' threw exception; nested exception is org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException: Cannot determine embedded database driver class for database type NONE. 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 (the profiles "dev" are currently active).
2017-12-25 09:54:11.660  INFO 1852 --- [  restartedMain] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
Disconnected from the target VM, address: '127.0.0.1:53388', transport: 'socket'
2017-12-25 09:54:11.676  INFO 1852 --- [  restartedMain] utoConfigurationReportLoggingInitializer : 

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2017-12-25 09:54:11.676 ERROR 1852 --- [  restartedMain] 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 (the profiles "dev" are currently active).

问题是出现在dataSource

dataSource代表数据源，所以完全可以想象得到问题出现在哪里。我配置的是“yaml”，你们可以进行相应的修改

spring: datasource: url: jdbc:mysql://localhost:3306/users?useUnicode=true&characterEncoding=utf-8&useSSL=false driver-class-name: com.mysql.jdbc.Driver username: root password: minIdle: 5 maxActive: 100 initialSize: 10 maxWait: 60000 timeBetweenEvictionRunsMillis: 60000 minEvictableIdleTimeMillis: 300000 validationQuery: select 'x' testWhileIdle: true testOnBorrow: false testOnReturn: false poolPreparedStatements: true maxPoolPreparedStatementPerConnectionSize: 50 removeAbandoned: true # 配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙 filters: stat,wall,log4j,logback cachePrepStmts: true # 开启二级缓存 # 合并多个DruidDataSource的监控数据 useGlobalDataSourceStat: true

 

 

 

只要配置好spring的datasource现在就可以成功运行了