首页 > 数据库技术 > 详细

使用java操作MongoDB

时间:2016-12-24 17:25:30      阅读:259      评论:0      收藏:0      [点我收藏+]

1.环境准备

下载mongoDB对Java支持的驱动包

驱动包下载地址:https://github.com/mongodb/mongo-java-driver/downloads

 

2.查询集合中所有文档

Mongo mongo = new Mongo("localhost",27017);
DB db = mongo.getDB("test");
DBCollection collection = db.getCollection("customer");
DBCursor dbCursor = collection.find();
System.out.println(collection.getCount());
while(dbCursor.hasNext()){
System.out.println(dbCursor.next());
}
mongo.close();

3.删除集合中的文档

Mongo mongo = new Mongo("localhost",27017);
DB db = mongo.getDB("test");
DBCollection collection = db.getCollection("customer");
BasicDBObject o = new BasicDBObject("_id", new ObjectId("5199ee647d5fc789bc760c07"));
collection.remove(o);
mongo.close();

4.向集合中插入文档

Mongo mongo = new Mongo("localhost",27017);
DB db = mongo.getDB("test");
DBCollection collection = db.getCollection("customer");
DBObject c = new BasicDBObject();
c.put("name", “jack");
c.put("age", 24);
collection.insert(c);
mongo.close();

5.更新集合中的文档

Mongo mongo = new Mongo("localhost",27017);
DB db = mongo.getDB("test");
DBCollection collection = db.getCollection("customer");
BasicDBObject query = new BasicDBObject("_id",new ObjectId("519e2e393296cf3baccdb10c"));
BasicDBObject object = (BasicDBObject) collection.findOne(query);
object.put("name", “wangwu");
int n = collection.update(query, object).getN();
System.out.println(n);
mongo.close();

  

  

 

 

使用java操作MongoDB

原文:http://www.cnblogs.com/ganchuanpu/p/6217414.html

(0)
(0)
   
举报
评论 一句话评论(0
关于我们 - 联系我们 - 留言反馈 - 联系我们:wmxa8@hotmail.com
© 2014 bubuko.com 版权所有
打开技术之扣,分享程序人生!