1、创建连接用户

> mongo ip:port

> use test

> db.addUser("root", "123456")

>db.auth("root","123456") （登陆验证）

2、java连接mongodb的驱动，下载地址：https://github.com/mongodb/mongo-java-driver/downloads。

3、测试代码

import java.net.UnknownHostException;
import com.mongodb.DB;
import com.mongodb.Mongo;
import com.mongodb.MongoException;


public class Util {

	/**
	 * @param args
	 * @throws MongoException 
	 * @throws UnknownHostException 
	 */
	public static void main(String[] args) {
		Mongo m;
		try {
			m = new Mongo("192.168.86.1", 27027); //<span style="font-family: Arial;">192.168.86.1为Ip，27027mongoDB的端口</span>			DB db = m.getDB("test");
	        if(db.authenticate("root", "123456".toCharArray())){
	            System.out.println("success");;
	        }
	        else System.out.println("false");
		} catch (UnknownHostException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (MongoException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
        
	}

}

Java连接MongoDB