How to use Spring to connect to MongoDB which requires authentication

Question

I am using the below Spring configuration in order to connect to mongoDB

Answer 1

To update @Lealem Admassu's answer for java config, in Mongo 3 they changed the API, and now it is recommended to use mongo's MongoCredentials instead of UserCredentials.

Here there is a simple example of how to get a MongoClient: http://docs.spring.io/spring-data/mongodb/docs/current/reference/html/#mongo.mongo-3.authentication

The next code can be done modular, but more or less this works for me (I needed a MongoTemplate):

public MongoTemplate getMongoTemplate(String host, int port,
                                      String authenticationDB,
                                      String database,
                                      String user, char[] password)
        throws UnknownHostException {
    return new MongoTemplate(
            new SimpleMongoDbFactory(
                    new MongoClient(
                            new ServerAddress(host, port),
                            Collections.singletonList(
                                    MongoCredential.createCredential(
                                            user,
                                            authenticationDB,
                                            password
                                    )
                            )
                    ),
                    database
            )
    );
}