mongodb初探-小试牛刀
1、启动数据库服务
2、下载mongodb的Java驱动，并构建到java工程中，下载地址：https://github.com/mongodb/mongo-java-driver/downloads
3、编写如下代码
package com.ljq.dao;import java.util.Date;import java.util.HashMap;import java.util.List;import java.util.Map;import java.util.Set;import java.util.UUID;import com.mongodb.BasicDBObject;import com.mongodb.DB;import com.mongodb.DBCollection;import com.mongodb.DBObject;import com.mongodb.Mongo;/** * Mongodb connect & insert & query simple example * @author jiaqianli.cn@gmail.com */public class DbTest {public static void main(String[] args) throws Exception{/* The Mongo object instance actually represents a pool of connections to the database; you will only need one object of class Mongo even with multiple threads. */// Mongo mongo = new Mongo();Mongo mongo = new Mongo("127.0.0.1");List<String> list = mongo.getDatabaseNames();// 打印数据库名字int index = 0;for (String db : list) {System.out.println("数据库"+(++index)+"："+db);}System.out.println("=============================");DB db = mongo.getDB( "mydb1" );Set<String> colls = db.getCollectionNames();// 打印mydb1中的链接index = 0;for (String s : colls) { System.out.println("连接"+(++index)+"："+s);}System.out.println("=============================");// 获取某个链接DBCollection collection = db.getCollection("mydb1");Map<String, Object> data = new HashMap<String, Object>();data.put("_id", UUID.randomUUID());data.put("name", "lijiaqian2011");data.put("email", "jiaqianli.cn@gmail.com");data.put("address", "BeiJing China");data.put("company", "BeiJing Boeh Technology");data.put("salary", 6000f);data.put("addtime", new Date());BasicDBObject doc = new BasicDBObject();doc.putAll(data);// 插入数据collection.insert(doc);BasicDBObject query = new BasicDBObject();query.put("name", "lijiaqian2011");// 查询数据DBObject mydoc = collection.findOne(query);System.out.println("email:"+mydoc.get("email"));}}