MongoDB Connection

最新推荐文章于 2024-08-07 10:00:16 发布

jiyuanpengjiyuanpeng

最新推荐文章于 2024-08-07 10:00:16 发布

阅读量171

点赞数

CC 4.0 BY-SA版权

分类专栏： mongoDB 文章标签：数据库 java

本文链接：https://blog.youkuaiyun.com/jiyuanpengjiyuanpeng/article/details/84418583

mongoDB 专栏收录该内容

4 篇文章

订阅专栏

1. Insert into mongoDB

package demo;

import java.net.UnknownHostException;
import com.mongodb.BasicDBObject;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBCursor;
import com.mongodb.Mongo;
import com.mongodb.MongoException;

public class MongodbConnection {
	public static void main(String[] args) {
		try {
			Mongo mongo = new Mongo("localhost", 27017);
			DB db = mongo.getDB("mydb");
			DBCollection collection = db.getCollection("things");
			BasicDBObject document = new BasicDBObject();
			document.put("name", "Lucy");
			collection.insert(document);
			System.out.println("Done");
		} catch (UnknownHostException e) {
			e.printStackTrace();
		} catch (MongoException e) {
			e.printStackTrace();
		}
	}
}

2. Query from mongoDB

package demo;

import java.net.UnknownHostException;
import com.mongodb.BasicDBObject;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBCursor;
import com.mongodb.Mongo;
import com.mongodb.MongoException;

public class MongodbConnection {
	public static void main(String[] args) {
		try {
			Mongo mongo = new Mongo("localhost", 27017);
			DB db = mongo.getDB("mydb");
			DBCollection collection = db.getCollection("things");
			BasicDBObject searchQuery = new BasicDBObject();
			searchQuery.put("name", "Lucy");
			DBCursor cursor = collection.find(searchQuery);
			while (cursor.hasNext()) {
				System.out.println(cursor.next());
			}
		} catch (UnknownHostException e) {
			e.printStackTrace();
		} catch (MongoException e) {
			e.printStackTrace();
		}
	}
}