基于mongodb3.0.1， 下载mongo-java-driver-3.0.1.jar

package test.mongodb;

import java.util.HashMap;
import java.util.Map;

import org.bson.Document;
import org.bson.conversions.Bson;

import com.mongodb.MongoClient;
import com.mongodb.client.FindIterable;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoDatabase;
import com.mongodb.client.model.Filters;

public class MongodbDemo {

	public static void main(String[] arsg) {
	 
		MongoClient client = new MongoClient("192.168.190.128",27017);
		//MongoClient client = new MongoClient();
	 
		MongoDatabase database  = client.getDatabase("testMongo");//Database name
	 
		//MongoCollection<> collection = database.getCollection("");
		 
        add(database);
		upate(database);
		delete(database);
		search(database);
		client.close();
	}
	
	
	
	public static void add(MongoDatabase database) {
		MongoCollection
  
    collection = database.getCollection("foo");//集合 name
		
		Map
   
     map = new HashMap
    
     (); map.put("time", "2015-05-21 22:59"); Document document = new Document("AddBy", "JAVA" ).append("append", map); collection.insertOne(document); database.createCollection("
     JavaCollection"); } public static void delete(MongoDatabase database) { MongoCollection
     
       collection = database.getCollection("foo"); collection.deleteOne(Filters.lte("age", 22)); database.getCollection("JavaCollection").drop(); } public static void upate(MongoDatabase database){ MongoCollection
      
        collection = database.getCollection("foo"); //collection.updateOne(Filters.gt("age",18), new Document("$set", new Document("sex","MANNN"))); collection.updateMany(Filters.gt("age",18), new Document("$set", new Document("sex","MANNN"))); } public static void search(MongoDatabase database){ MongoCollection
       
         collection = database.getCollection("foo"); Bson bsonfilter = Filters.gte("age",22); FindIterable
        
          find = collection.find(bsonfilter); System.out.println("collection.count():: "+ collection.count()); for(Document documentT : find) { System.out.println(documentT.get("sex")); } Document document = find.first(); if(null !=document && document.containsKey("age")) { System.out.println(document.getDouble("age")); } } }