It can only be applied to public visibility methods, and you can also annotate @Transational annotations directly on the class to include the entire class in spring transaction management.
By default, uncheck exceptions such as network exceptions are not rolled back.
@Transational(rollbackFor = Exception.class)
An exception was caught using try catch in the service layer, @Transational is invalid at this time, but a service exception can be caught in the controller layer, and @Transational is still valid at this time
The A method without @Transational of the same class calls the B method with @Transational, @Transational is invalid. Of course it would be fine if both had @Transational.
