Springdata中嵌套删除某个字段

Posted 2023-01-03

一、实体类

public class TutorAddRelation implements Serializable

  private static final long serialVersionUID = 1L;

  private Long id;
  
  private List<TutorAddVO> receiver;

删除TutorAddRelation中receiver集合中userId=0对象

mongodb视图

代码如下：

public Map<String, Object> deleteMyTutor(Long studentId, Long tutorId) 
Query query = new Query();
Criteria criteria = new Criteria();
criteria.and("_id").is(studentId);
query.addCriteria(criteria);
Update update = new Update();
update.pull("receiver", new BasicDBObject("userId", tutorId));
mongoTemplate.updateFirst(query, update,MongoSaveType.tutorAddRelation.v());
logger.info("删除辅导成功:",tutorId);