首先添加MongoDB的驅(qū)動(dòng)包

從網(wǎng)站建設(shè)到定制行業(yè)解決方案，為提供成都網(wǎng)站設(shè)計(jì)、成都網(wǎng)站建設(shè)服務(wù)體系，各種行業(yè)企業(yè)客戶提供網(wǎng)站建設(shè)解決方案，助力業(yè)務(wù)快速發(fā)展。創(chuàng)新互聯(lián)公司將不斷加快創(chuàng)新步伐，提供優(yōu)質(zhì)的建站服務(wù)。

并開啟了mongodb的服務(wù)

package com.zzq.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;

public class MongDBTest {
public static void main(String[] args) throws UnknownHostException, MongoException {
 
  Mongo mg = new Mongo("localhost", 27017);
     //查詢所有的Database
     for (String name : mg.getDatabaseNames()) {
         System.out.println("dbName: " + name);
     }
    
     DB db = mg.getDB("mircroblog");
     //查詢所有的聚集集合
     for (String name : db.getCollectionNames()) {
         System.out.println("collectionName: " + name);
     }
    
     DBCollection users = db.getCollection("citizens");
    
     //查詢所有的數(shù)據(jù)
     DBCursor cur = users.find();
     while (cur.hasNext()) {
         System.out.println(cur.next());
     }
     System.out.println(cur.count());
     System.out.println(cur.getCursorId());
     System.out.println(JSON.serialize(cur));

   }

}