Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.

SpringBoot项目运行报错记录

错误如下：

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 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).


Process finished with exit code 0

找了很多文章也改了很久一直没发现自己的错在哪里，错误参考这篇文章第八条。

然后检查发现运行报错的这个模块（没有用到数据库，所以要主启动要配置@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class})）也没有引入druid呀，再一仔细瞅，看到了有个接口中使用到一个实体类，属于另一个服务模块。然后引入了提供服务的模块，那个模块中配置了druid。

解决：把当前模块pom引入的服务模块删除，将用到的实体类复制一份到当前模块中配置即可。