Spring Data MongoDB

Create the model (POJO)

@Document(collection = "customer")
public class Customer {
    @Id 
    String id; 
    String firstName; 
    String lastName; 
    String contact;
    //getters and setters
}

Create the repository

public interface ContactRepository extends MongoRepository<Contact, String> {
    public List<Customer> findByContact(String customer);
    public List<Customer> findAll();
}

Note: We just need to write the interface, SpringData will take care of the implementation.

Configure MongoClient

@Configuration
public class MongoConfig extends AbstractMongoConfiguration { 
    @Override 
    protected String getDatabaseName() { 
        return "<dbname>"; 
    }
    @Override 
    public MongoClient mongoClient() { 
        return new MongoClient(new MongoClientURI("mongodb://<username>:<pw>@<ip>:<port>/<dbname>")); 
    }
}

Start using

@Autowired 
private CustomerRepository customerRepository;
...
Customer c = new Customer("firstname", "lastname", "1234567890");
customerRepository.insert(contact);
List<Customer> customers = customerRepository.findAll();