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

目录

前言描述：

解决问题的思路是添加配置类：

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前言描述：

启动的时候报错信息：

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

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).