1/ʹݿ,һ,һ,д(ɾ)ִ,вڴӿִ,ϵĽ̳õ.
2/ݲͬĲлͬdatasource

dao֮ǰãӦservice֮ǰá
DynamicDataSourceHolder.putDataSourceName("xx");
demoExtService.chooseDatabase2();