在一次二次开发中，之前用的数据库是 postgres，一切正常 现要新接入新的数据源 希望在不改动之前代码的情况下对新的数据库进行操作 因为 springboot 的自动配置 项目启动不起来 求各位大佬给一个解决方案 小弟不胜感激

报错信息如下： Error starting ApplicationContext. To display the conditions report re-run your application with ‘debug’ enabled. 2020-05-27 09:30:56,442 [main] ERROR o.s.b.d.LoggingFailureAnalysisReporter –

APPLICATION FAILED TO START

Description:

Field relationRepository in org.thingsboard.server.dao.sql.relation.JpaRelationDao required a bean named ‘entityManagerFactory’ that could not be found.

The injection point has the following annotations: – @org.springframework.beans.factory.annotation.Autowired(required=true)

Action:

Consider defining a bean named ‘entityManagerFactory’ in your configuration.