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jAvA mongoDB

public class MongoDBJDBC {public static void main(String[] args) {try {// 实例化Mongo对象,连接27017端口Mongo mongo = new Mongo("localhost", 27017);// 连接名为yourdb的数据库,假如数据库不存在的话,mongodb会自动建立DB db = mongo...

private Mongo mog = null; 02 private DB db = null; 03 private DBCollection dbc = null; 04 05 /** 06 * 构造方法 07 */ 08 public MongoTest(){ 09 //实例化Mongo 会默认连接你的数据库 10 try { 11 mog = new Mongo(); 12 } catch (Unknow...

在java中怎么以时间为条件查询 java获取当前时间精确到毫秒 new SimpleDateFormat("yyyyMMddHHmmssSSS") .format(new Date() ); 方法2:Calendar Cld = Calendar.getInstance(); int YY = Cld.get(Calendar.YEAR) ;int MM = Cld.get(Calendar.MO...

java是多线程同时查一张表,_id是自己定义的,部分查询代码如下 DBObject o = new BasicDBObject(); DBObject value = new BasicDBObject(); DBCollection dataCollection = null; DBCollection dptCollection = db.getCollection("dpt"); for(E...

先下载好驱动 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 static void selectAll() throws Exception{ //第一:实例化mongo对象,连接mongodb服务器 包含所有的数据库 //默认构造方法,默认是连接本机,端口号,默认是27017 //相当于Mongo mongo =new Mongo("localhost",27017) Mongo mongo =new...

需要的jar mongo-java-driver maven仓库里面,mongodb3.0的连接驱动 org.mongodb mongo-java-driver 3.0.0 2.连接过程代码 import org.bson.Document;import com.mongodb.MongoClient;import com.mongodb.client.MongoCollection;import com.mong...

import org.bson.Document;import com.mongodb.MongoClient;import com.mongodb.client.FindIterable;import com.mongodb.client.MongoCollection;import com.mongodb.client.MongoCursor;import com.mongodb.client.MongoDatabase;public class...

方法一:通过构造BasicDBObject对象来进行查询 [java] view plain copy int startYear=2015,endYear=2016; int startMonth=12,endMonth=1; int startDay=1,endDay=1; BasicDBObject query= new BasicDBObject("applydate", new BasicDBObject("$...

package com.fz.test;import java.net.UnknownHostException;import com.mongodb.DB;import com.mongodb.DBCollection;import com.mongodb.DBCursor;import com.mongodb.Mongo;import com.mongodb.MongoException;import com.mongodb.util.JSON;...

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