mongo db 去除 _class 字段

最新推荐文章于 2023-08-29 18:22:18 发布

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本文介绍了一个Spring Boot应用中如何配置MongoDB，通过自定义MappingMongoConverter来改变默认的行为，例如禁用_class字段的保存，以及如何注入自定义的CustomConversions。

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import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.convert.CustomConversions;
import org.springframework.data.mongodb.MongoDbFactory;
import org.springframework.data.mongodb.core.convert.DbRefResolver;
import org.springframework.data.mongodb.core.convert.DefaultDbRefResolver;
import org.springframework.data.mongodb.core.convert.DefaultMongoTypeMapper;
import org.springframework.data.mongodb.core.convert.MappingMongoConverter;
import org.springframework.data.mongodb.core.mapping.MongoMappingContext;
/**
* Create by JIUN·LIU at 2018/7/24
*/
@Configuration
public class MongoConfig {
@Bean
public MappingMongoConverter mappingMongoConverter(MongoDbFactory factory, MongoMappingContext context, BeanFactory beanFactory) {
DbRefResolver dbRefResolver = new DefaultDbRefResolver(factory);
MappingMongoConverter mappingConverter = new MappingMongoConverter(dbRefResolver, context);
try {
mappingConverter.setCustomConversions(beanFactory.getBean(CustomConversions. class));
} catch (NoSuchBeanDefinitionException ignore) {
}
// Don't save _class to mongo
mappingConverter.setTypeMapper(new DefaultMongoTypeMapper( null));
return mappingConverter;
}
}