彻底解决Failed to configure a DataSource: ‘url‘ attribute is not specified and no embedded datasource

彻底解决Failed to configure a DataSource: ‘url‘ attribute is not specified and no embedded datasource"/>

彻底解决Failed to configure a DataSource: ‘url‘ attribute is not specified and no embedded datasource

彻底解决Failed to configure a DataSource: ‘url‘ attribute is not specified and no embedded datasource

• 错误描述：
• 错误原因：
• 解决办法

错误描述：

2022-08-19 09:56:55.641  WARN 47976 --- [           main] ConfigServletWebServerApplicationContext : 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
2022-08-19 09:56:55.645  INFO 47976 --- [           main] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
2022-08-19 09:56:55.657  INFO 47976 --- [           main] ConditionEvaluationReportLoggingListener : Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2022-08-19 09:56:55.743 ERROR 47976 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : ***************************
APPLICATION FAILED TO START
***************************Description:Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.Reason: Failed to determine a suitable driver classAction: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).Process finished with exit code 1

错误原因：

springboot自动装配，一开始是直接默认连接数据库的即错误中提示的datasource，而我这里并没有连接数据库，没有给它datasource，所以就会找不到datasource，那么就出现了错误。

解决办法

将主启动类的注解@SpringBootApplication修改为@SpringBootApplication(exclude= {DataSourceAutoConfiguration.class})忽略到数据库连接即可。