mongo db 去除 _class 字段

1. import org.springframework.beans.factory.BeanFactory;
2. import org.springframework.beans.factory.NoSuchBeanDefinitionException;
3. import org.springframework.context.annotation.Bean;
4. import org.springframework.context.annotation.Configuration;
5. import org.springframework.data.convert.CustomConversions;
6. import org.springframework.data.mongodb.MongoDbFactory;
7. import org.springframework.data.mongodb.core.convert.DbRefResolver;
8. import org.springframework.data.mongodb.core.convert.DefaultDbRefResolver;
9. import org.springframework.data.mongodb.core.convert.DefaultMongoTypeMapper;
10. import org.springframework.data.mongodb.core.convert.MappingMongoConverter;
11. import org.springframework.data.mongodb.core.mapping.MongoMappingContext;
12.  
13. /**
14. * Create by JIUN·LIU at 2018/7/24
15. */
16.  
17. @Configuration
18. public class MongoConfig {
19.  
20. @Bean
21. public MappingMongoConverter mappingMongoConverter(MongoDbFactory factory, MongoMappingContext context, BeanFactory beanFactory) {
22. DbRefResolver dbRefResolver = new DefaultDbRefResolver(factory);
23. MappingMongoConverter mappingConverter = new MappingMongoConverter(dbRefResolver, context);
24. try {
25. mappingConverter.setCustomConversions(beanFactory.getBean(CustomConversions. class));
26. } catch (NoSuchBeanDefinitionException ignore) {
27. }
28.  
29. // Don‘t save _class to mongo
30. mappingConverter.setTypeMapper(new DefaultMongoTypeMapper( null));
31.  
32. return mappingConverter;
33. }
34.  
35. }