Spring boot 启动报错 Failed to auto-configure a DataSource 桃扇骨 2022-05-29 13:45 160阅读 0赞 今天Spring Boot 2.0正式版发布,寻思着搭个小demo尝试一下Spring Boot的新特性,使用idea创建项目。在选择组件时添加了mysql、mybatis 然后在第一次启动的时候启动报错,错误信息如下: \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* APPLICATION FAILED TO START \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* 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). 在多方查证后,需要在启动类的@EnableAutoConfiguration或@SpringBootApplication中添加exclude = \{DataSourceAutoConfiguration.class\},排除此类的autoconfig。启动以后就可以正常运行。 这是因为添加了数据库组件,所以autoconfig会去读取数据源配置,而我新建的项目还没有配置数据源,所以会导致异常出现。
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