Spring data MongoDb: MappingMongoConverter remove _class

Question

The default MappingMongoConverter adds a custom type key (\"_class\") to each object in the database. So, if I create a Person:

package my.d         


        

Answer 1

While, Mkyong's answer still works, I would like to add my version of solution as few bits are deprecated and may be in the verge of cleanup.

For example : MappingMongoConverter(mongoDbFactory(), new MongoMappingContext()) is deprecated in favor of new MappingMongoConverter(dbRefResolver, new MongoMappingContext()); and SimpleMongoDbFactory(new Mongo(), "databasename"); in favor of new SimpleMongoDbFactory(new MongoClient(), database);.

So, my final working answer without deprecation warnings is :

@Configuration
public class SpringMongoConfig {

    @Value("${spring.data.mongodb.database}")
    private String database;

    @Autowired
    private MongoDbFactory mongoDbFactory;

    public @Bean MongoDbFactory mongoDBFactory() throws Exception {
        return new SimpleMongoDbFactory(new MongoClient(), database);
    }

    public @Bean MongoTemplate mongoTemplate() throws Exception {

        DbRefResolver dbRefResolver = new DefaultDbRefResolver(mongoDbFactory);

        // Remove _class
        MappingMongoConverter converter = new MappingMongoConverter(dbRefResolver, new MongoMappingContext());
        converter.setTypeMapper(new DefaultMongoTypeMapper(null));

        return new MongoTemplate(mongoDBFactory(), converter);

    }

}

Hope this helps people who would like to have a clean class with no deprecation warnings.