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

Spring Boot项目中含有Failed to configure a DataSource: ‘url’ attribute is not specified and no embedded datasource could be configured.错误. 问题原因: Mybatis没有找到合适的加载类,其实是大部分spring - datasource - url没有加载成功,分析原因

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