Mongodb 之insert瞬时完成，测试数据---飞天博客

public class MongoTest {
	

	public static void main(String[] args) throws UnknownHostException {
		MongoClient mongoClient = new MongoClient( "localhost" , 30000 );
		DB db = mongoClient.getDB( "mytest" );
	// 返回当前的数据库名称
//		Set<String> colls = db.getCollectionNames();
//		
//		for (String s : colls) {
//		    System.out.println(s);
//		}
		DBCollection collection=db.getCollection("test");
		BasicDBObject doc = new BasicDBObject("name", "xiaohua2");
		collection.insert(doc);
			System.out.println(collection.count());
		mongoClient.close();
		/*
	
		//得到一个集合。这个集合就是用来做crud的接口
		DBCollection coll = db.getCollection("mydb");
		//插入一个document，和sql的表差点儿相同
		//The _id element has been added automatically by MongoDB to your document.
		//Remember, MongoDB reserves element names that start with “_”/”$” for internal use
		BasicDBObject doc = new BasicDBObject("name", "MongoDB")
        .append("type", "database")
        .append("count", 1)
        .append("info", new BasicDBObject("x", 203).append("y", 102));
		coll.insert(doc);
		//得到第一条document
		DBObject myDoc = coll.findOne();
		System.out.println(myDoc);
		//多条数据插入
		for (int i=0; i < 100; i++) {
		    coll.insert(new BasicDBObject("i", i));
		}
		//统计document的行数
		System.out.println(coll.getCount());
		
		//使用游标
		DBCursor cursor = coll.find();
		try {
		   while(cursor.hasNext()) {
		       System.out.println(cursor.next());
		   }
		} finally {
		   cursor.close();
		}
		mongoClient.close();
		//查询
//		BasicDBObject query = new BasicDBObject("i", 71);
//		cursor = coll.find(query);
//
//		try {
//		   while(cursor.hasNext()) {
//		       System.out.println(cursor.next());
//		   }
//		} finally {
//		   cursor.close();
//		}
		  */
	}
}

注意记得将mongoclient close掉

备注，假设转载：请标明出处blog.csdn.net/xh199110 飞天博客

假设有写的不正确的地方，欢迎指正。

作者也是看官方网站，查找信息，再加上自己的理解，我写这篇文章，这样我们就一起来学习。谢谢

版权声明：本文博主原创文章。博客，未经同意，不得转载。

Mongodb 之insert瞬时完成，测试数据---飞天博客

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