MongoDB通过Java驱动程序获取集合

本文介绍了MongoDB通过Java驱动程序获取集合的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我收到以下错误:

I am getting the following error:

程序无法获取集合属性.

Program can't fetch collections attributes.

MongoClient mongoClient = new MongoClient(new ServerAddress("localhost", 27017)); MongoDatabase db = mongoClient.getDatabase("local"); MongoCollection collection = db.getCollection("sadi"); BasicDBObject searchQuery = new BasicDBObject(); searchQuery.put("name","amran"); DBCursor cursor = collection.find(searchQuery);

推荐答案

尝试一下:

import org.bson.Document; import com.mongodb.BasicDBObject; import com.mongodb.MongoClient; import com.mongodb.ServerAddress; import com.mongodb.client.MongoCollection; import com.mongodb.client.MongoCursor; import com.mongodb.client.MongoDatabase; MongoClient mongoClient = new MongoClient(new ServerAddress("localhost", 27017)); MongoDatabase db = mongoClient.getDatabase("local"); MongoCollection<Document> collection = db.getCollection("sadi"); BasicDBObject searchQuery = new BasicDBObject(); searchQuery.put("name","amran"); MongoCursor<Document> cursor = collection.find(searchQuery).iterator(); try { while (cursor.hasNext()) { System.out.println(cursor.next().toJson()); } } finally { cursor.close(); }

由于3.0系列Java驱动程序中与数据库，集合等相关的更改很多，请通过快速浏览更多的了解.

As there are many changes in 3.0 series java driver related to database, collection,etc. Please go through quick tour for more understanding.