MongoDB批插入不使用java驱动程序

我正在试用mongoDB，下面是我用来连接和插入记录的代码

import com.mongodb.*;

import java.net.UnknownHostException;
import java.util.LinkedList;
import java.util.List;

public class MongoConnect {

    public static void main(String[] args) throws UnknownHostException, InterruptedException {
        MongoClient mongoClient = new MongoClient("localhost");
        DB db = mongoClient.getDB("mydb");
        DBCollection collection = db.getCollection("emails");
        long currentTime = System.currentTimeMillis();

        long totalRecords = 120L;
        long batchInsert = 0;

        long insertedRecords = 0L;
        List<DBObject> basicDBObjects = new LinkedList<DBObject>();
        while (insertedRecords < totalRecords) {
            System.out.println("adding: "+insertedRecords);

            basicDBObjects.add(new BasicDBObject("email", "amar+" + insertedRecords + "@gmail.com"));
            insertedRecords++;
            batchInsert++;
            if (batchInsert == 5) {
                System.out.println("inserting: "+(insertedRecords-5));
                collection.insert(basicDBObjects);

                System.out.println("Inserted: *******"+insertedRecords);
                //Thread.sleep(200);
                batchInsert = 0;
                basicDBObjects = new LinkedList<DBObject>();
            }
        }

        long endTime = System.currentTimeMillis();
        System.out.println("Total time taken :"+((endTime-currentTime)/1000));
        //long currentTime = System.currentTimeMillis();
        DBCursor email = collection.find(new BasicDBObject("email", "amar+3@gmail.com"));
        int count = email.count();
        System.out.println("count = "+count);
        System.out.println("Total time taken: "+String.valueOf(System.currentTimeMillis()-currentTime));

    }
}

导入com.mongodb.*；
导入java.net.UnknownHostException；
导入java.util.LinkedList；
导入java.util.List；
公共类MongoConnect{
公共静态void main（字符串[]args）抛出UnknownHostException、InterruptedException{
MongoClient MongoClient=新的MongoClient（“本地主机”）；
DB=mongoClient.getDB（“mydb”）；
DBCollection=db.getCollection（“电子邮件”）；
长currentTime=System.currentTimeMillis（）；
长时间记录=120L；
长批插入=0；
长插入记录=0升；
List basicdbobobjects=newlinkedlist（）；
while（insertedRecords

我可以看到创建了带有“电子邮件”的收藏，它显示为

show collections

---

但是当我执行

db.mydb.emails.find（{}）

时，不会出现任何结果。我尝试重新启动mongo服务，甚至尝试了

db.dropDatabase（）

似乎没有任何效果。有人能指出这个问题吗？仅供参考，控制台上的插入工作正常。

我只更改了

MongoClient MongoClient=new MongoClient（“localhost”）

to

Mongo Mongo=new Mongo（）并且一切都如您所期望的那样工作

您使用的是哪个版本的mongo驱动程序？我使用的是mongo 2.9.1，以下是maven依赖项：

<dependency> 
<groupId>org.mongodb</groupId>
<artifactId>mongo-java-driver</artifactId> 
<version>2.9.1</version>
</dependency>

<dependency> 
<groupId>org.mongodb</groupId>
<artifactId>bson</artifactId> 
<version>2.9.1</version> 
</dependency>

Mongo mongo = new Mongo();
        DB db = mongo.getDB("example");
        DBCollection collection = db.getCollection("sampleCollection");
        List<DBObject> basicDBObjects = Lists.newArrayList();
        long currentTime = System.currentTimeMillis();
        long totalRecords = 120L;
        long batchInsert = 0;

        long insertedRecords = 0L;
        while (insertedRecords < totalRecords) {
            System.out.println("adding: "+insertedRecords);

            basicDBObjects.add(new BasicDBObject("email", "amar+" + insertedRecords + "@gmail.com"));
            insertedRecords++;
            batchInsert++;
            if (batchInsert == 5) {
                System.out.println("inserting: "+(insertedRecords-5));
                collection.insert(basicDBObjects);

                System.out.println("Inserted: *********"+insertedRecords);
                Thread.sleep(200);
                batchInsert = 0;
                basicDBObjects = Lists.newArrayList();
            }
        }

        long endTime = System.currentTimeMillis();
        System.out.println("Total time taken :"+((endTime-currentTime)/1000));
        //long currentTime = System.currentTimeMillis();
        DBCursor email = collection.find(new BasicDBObject("email", "amar+3@gmail.com"));
        int count = email.count();
        System.out.println("count = "+count);
        System.out.println("Total time taken: "+String.valueOf(System.currentTimeMillis()-currentTime));


org.mongodb
mongo java驱动程序
2.9.1
org.mongodb
布森
2.9.1 
Mongo Mongo=新Mongo（）；
DB=mongo.getDB（“示例”）；
DBCollection=db.getCollection（“sampleCollection”）；
List basicdbobobjects=Lists.newArrayList（）；
长currentTime=System.currentTimeMillis（）；
长时间记录=120L；
长批插入=0；
长插入记录=0升；
while（insertedRecords
我只更改了
MongoClient MongoClient=新的MongoClient（“localhost”）
to
Mongo Mongo=new Mongo（）并且一切都如您所期望的那样工作

您使用的是哪个版本的mongo驱动程序？我使用的是mongo 2.9.1，以下是maven依赖项：

<dependency> 
<groupId>org.mongodb</groupId>
<artifactId>mongo-java-driver</artifactId> 
<version>2.9.1</version>
</dependency>

<dependency> 
<groupId>org.mongodb</groupId>
<artifactId>bson</artifactId> 
<version>2.9.1</version> 
</dependency>

Mongo mongo = new Mongo();
        DB db = mongo.getDB("example");
        DBCollection collection = db.getCollection("sampleCollection");
        List<DBObject> basicDBObjects = Lists.newArrayList();
        long currentTime = System.currentTimeMillis();
        long totalRecords = 120L;
        long batchInsert = 0;

        long insertedRecords = 0L;
        while (insertedRecords < totalRecords) {
            System.out.println("adding: "+insertedRecords);

            basicDBObjects.add(new BasicDBObject("email", "amar+" + insertedRecords + "@gmail.com"));
            insertedRecords++;
            batchInsert++;
            if (batchInsert == 5) {
                System.out.println("inserting: "+(insertedRecords-5));
                collection.insert(basicDBObjects);

                System.out.println("Inserted: *********"+insertedRecords);
                Thread.sleep(200);
                batchInsert = 0;
                basicDBObjects = Lists.newArrayList();
            }
        }

        long endTime = System.currentTimeMillis();
        System.out.println("Total time taken :"+((endTime-currentTime)/1000));
        //long currentTime = System.currentTimeMillis();
        DBCursor email = collection.find(new BasicDBObject("email", "amar+3@gmail.com"));
        int count = email.count();
        System.out.println("count = "+count);
        System.out.println("Total time taken: "+String.valueOf(System.currentTimeMillis()-currentTime));


org.mongodb
mongo java驱动程序
2.9.1
org.mongodb
布森
2.9.1 
Mongo Mongo=新Mongo（）；
DB=mongo.getDB（“示例”）；
DBCollection=db.getCollection（“sampleCollection”）；
List basicdbobobjects=Lists.newArrayList（）；
长currentTime=System.currentTimeMillis（）；
长时间记录=120L；
长批插入=0；
长插入记录=0升；
while（insertedRecords
也尝试了2.10.1，但它再次起作用。你确定你检查的是正确的mongo吗？你能改变一下数据库名吗