dbobject

dbobject精品文章

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  scrapy入门：豆瓣电影top250爬取

  ... DoubanPipeline(object): def process_item(self, item, spider): dbObject = dbHandle() cursor = dbObject.cursor() sql = insert into db_info(ranking,title,director,movie_de...

  xialong 2019-07-31 11:16 评论0 收藏0
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  spring data mongo比较两个字段查询

  ...teria criteria = new Criteria() { @Override public DBObject getCriteriaObject() { DBObject obj = new BasicDBObject(); obj.put($where, this.la...

  wall2flower 2019-06-26 17:04 评论0 收藏0
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  双刃剑MongoDB的学习和避坑

  ... import org.springframework.stereotype.Repository; import com.mongodb.BasicDBObject; import com.mongodb.DBCollection; import com.mongodb.DBObject; @Repository @SuppressWarnings({unchecked, rawtype...

  everfight 2019-06-26 17:35 评论0 收藏0
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  MongoDB导出场景查询优化

  ...r = collection.find(query).batchSize(8000); while (dbCursor.hasNext()) { DBObject nextItem = dbCursor.next(); //业务代码 ... // } 那么我们再看看hasNext内部的逻辑好吗？好的. @Override public boolean has...

  seal_de 2019-06-26 17:18 评论0 收藏0
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  Spring Boot 中使用 MongoDB 增删改查

  ...据库取出的数据实例化为对象。该构造函数传入的值为从DBObject中取出的数据 package io.ymq.example.mongodb; @Document(collection = demo_collection) public class DemoEntity implements Serializable { @Id private Long id; ...

  ranwu 2019-06-26 17:34 评论0 收藏0