springBoot Error creating bean with name 'dataSource' defined in class path resource

• springboot前端服務，沒有操作數據庫，報dataSource異常
   

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

1. spring boot會默認加載org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration類
2. DataSourceAutoConfiguration又使用了@Configuration註解向spring注入了dataSource bean
3. 但是因爲工程中沒有關於dataSource相關的配置信息，當spring創建dataSource bean因缺少相關的信息就會報錯

• 解決

啓動工程時排除：DataSourceAutoConfiguration即可

如在@SpringBootApplication啓動註解上加 exclude={DataSourceAutoConfiguration.class}
 

@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class})