MongoClientOptions.Builder builder = MongoClientOptions.builder(); //可以通过builder做各种详细配置

        MongoClientOptions myOptions = builder.build();

        ArrayList<ServerAddress> serverAddressList = new ArrayList();

        ServerAddress record = new ServerAddress("localhost", 27017); //IP、端口

        serverAddressList.add(record);

        //用户名、默认库名、密码

        MongoCredential credential = MongoCredential.createCredential("testUser", "test", "testPwd".toCharArray());

        MongoClient mongoClient = new MongoClient(serverAddressList, credential, myOptions);

        //用户名、密码、IP、端口、默认库名

        String sURI = String.format("mongodb://%s:%s@%s:%d/%s", "testUser", "testPwd", "localhost", 27017, "test");

        MongoClient mongoClient = new MongoClient(new MongoClientURI(sURI));

        //不使用用户名和密码直接进行登陆（方便初学者，避免过于复杂的设置）

        MongoClient mongoClient = new MongoClient("localhost", 27017);

        MongoDatabase dbTest = mongoClient.getDatabase("test");

        //如果不存在，则增加collection

        MongoCollection<Document> collection = dbTest.getCollection("test_collection");

        if (collection == null) {

            dbTest.createCollection("test_collection");

        }

        //insert 增加数据

        Document doc = new Document();

        doc.append("Name", "name1");

        doc.append("Age", 20);

        //collection.insertOne(doc); //增加一条数据

        //增加多条数据

        Document doc2 = new Document();

        doc2.append("Name", "name2");

        doc2.append("Age", 30);

        ArrayList dataList = new ArrayList();

        dataList.add(doc);

        dataList.add(doc2);

        collection.insertMany(dataList);

        //delete 删除数据

        BasicDBObject delSql = new BasicDBObject("Name", "name1");

        collection.findOneAndDelete(delSql); //删除一条

        //collection.deleteMany(delSql); //删除多条

        //update 修改数据

        BasicDBObject updateOldSql = new BasicDBObject("Name", "name2");

        //更新一条数据

        BasicDBObject updateNewOneSql = new BasicDBObject("$set", new BasicDBObject("Name", "name1"));

        //collection.updateOne(updateOldSql,updateNewOneSql);

        //更新多条数据

        BasicDBObject updateNewManySql = new BasicDBObject("$set", new BasicDBObject("Name", "name1").append("Age",66)); //修改多个字段

        collection.updateMany(updateOldSql, updateNewManySql);

        //查询数据

        BasicDBObject querySql = new BasicDBObject("Name", "name1");

        FindIterable<Document> queryRst = collection.find(querySql); //这里可以做sort和filter等操作

        MongoCursor<Document> cursor = queryRst.iterator();

        while (cursor.hasNext()){

            System.out.println(cursor.next());//输出每一行数据

        }