springboot如何动态切换不同的数据源

Question

I have the requirement like to switch the datasource at runtime. The different database configuration data(it may be mysql, oracle, mongodb ..) is persisted in DB. Because I need to add datasource at any time, so I do that. Now, when I use the datasource , I will get database configuration data in the DB and create a new sqlSessionFactory again.

How can I give it to Spring IOC container to deal with?

Answer 1

Looks like you need supported by Spring multitenancy.

You need to define tenant resolver to identify which tenant you need (eg by intercepting request and get tenant from header or from token), tenant context to keep tenant (eg a ThreadLocal storage where tenant is defined for each thread) and multitenant connection provider (which read tenant from thread local and provide DataSource/connection specific for the tenant).

See the example and the example