What is the correct way to close the mongo connection using spring-mongo?

Question

I am using spring-mongo in my webapp. When I undeploy my application in Tomcat7, there is a memory leak. I suspect that it might be the Mongo object that I didn't explicitly close. I would like to know what is the correct way (and location) to close it.

Answer 1

How about something like this:

@Component
public class MongoDBManager {

  @Autowired
  Mongo mongo;

  @PreDestroy
  public void shutdown() {
    mongo.close();
  }
}