Spring Boot 启动报错Error creating bean with name 'dataSource' defined in class path resource

使用idea 新建了一个spring boot项目，什么都不干，新建一个controller,然后启动报错：

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$Hikari.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method 'dataSource' threw exception; nested exception is org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException: Failed to determine a suitable driver class

 

原因：spring boot会默认加载org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration类

因为新建的spring boot 工程中没有dataSource相关的配置信息，所以一启动就报错

在Application类上加上如下：

@EnableAutoConfiguration(exclude={DataSourceAutoConfiguration.class})

 

或者配置datasource信息，补全配置文件即可