先引入mongo-java-dirver驅動

<!-- mongo-java-dirver -->
<dependency>
	<groupId>org.mongodb</groupId>
	<artifactId>mongo-java-driver</artifactId>
	<version>3.4.2</version>
</dependency>

代碼操作演示：

package com.simple.database.test;

import java.util.ArrayList;
import java.util.List;

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.MongoCursor;
import com.mongodb.client.MongoDatabase;
import com.mongodb.client.model.Filters;

/**
 * java操作MongoDB
 * @author root
 */
public class HelloMongoDB {

	public static void main(String[] args) {
		try {
//			1、連接到MongoDB服務
			MongoClient mc = new MongoClient("127.0.0.1", 27017);

//			2、連接到指定數據庫
			MongoDatabase db = mc.getDatabase("demodb");
			
//			3、創建集合
//			db.createCollection("simplelife");
			
//			4、獲取集合
			MongoCollection<Document> collection = db.getCollection("users");

//			5、插入文檔數據
//			insertCollectionData(collection);
			
//			6、查詢文檔數據
			findCollectionData(collection);
			
//			7、更新文檔數據
//			將文檔中likes=100的文檔修改為likes=200   
			updateCollectionData(collection);
			
//			8、刪除第一個文檔數據
			collection.deleteMany(Filters.eq("likes",200));
			collection.deleteOne(Filters.eq("likes",100));
		} catch (Exception e) {
			e.printStackTrace();
			System.out.println(e.getClass().getName() + "……" + e.getMessage());
		}

	}

	private static void updateCollectionData(
			MongoCollection<Document> collection) {
		Bson filter = Filters.eq("likes", 100);
		Document update = new Document("$set", new Document("likes", 200));
		collection.updateMany(filter, update);
	}

	private static void findCollectionData(MongoCollection<Document> collection) {
		FindIterable<Document> findIterable = collection.find();
		MongoCursor<Document> mongoCursor = findIterable.iterator();
		while(mongoCursor.hasNext()){
			System.out.println(mongoCursor.next());
		}
	}

	/**
	 * 插入文檔 1、創建文檔org.bson.Document參數為key-value的格式
	 * 2、創建文檔集合List<Document>
	 * 3、將文檔集合插入數據庫集合：mongoCollection.insertMany(List<Document>)
	 * 插入單個文檔可以用 ：mongoCollection.insertOne(Document)
	 */
	private static void insertCollectionData(
			MongoCollection<Document> collection) {
		Document document = new Document("title", "MongoDB");
		document.append("description", "database").append("likes", 100)
				.append("by", "Fly");
		List<Document> documents = new ArrayList<>();
		documents.add(document);
		collection.insertMany(documents);
		System.out.println("文檔插入成功！");
	}
}

本文出自 “SimpleLife” 博客，請務必保留此出處http://simplelife.blog.51cto.com/9954761/1929886

Java操作MongoDB