如何设置MongoDB Java环境？

Visit the MongoDB home page, in the Software (dropdown), select Community Server.

In the MongoDB Community Server page, specify the platform details and download the MongoDB server compatible to your platform.

Install the downloaded software and create a folder/directory named data in the C drive to store the database files.

Set the path (environmental variable) for the bin directory of MongoDB i.e. C:\Program Files\MongoDB\Server\4.2\bin>

Open a command prompt and run the MongoDB server by executing the mongod command as shown below −

C:\Users\Tutorialspoint>mongod --dbpath "C:\data"

• Open another command prompt connect to the server by running the mongo command this will give you MongoDB shell and from this, you can

• From MongoDB shell, you can manipulate data in the database.

For testing the setup, try connecting to a database named my database using the use command. If your setup is successful you will get the following result.

> use myDatabase;
switched to db myDatabase

安装Java MongoDB驱动程序

要在eclipse中设置一个MongoDB java环境，您需要创建一个Java - Maven项目，并将以下依赖项添加到其pom.xml 文件中。

<dependency>
   <groupId>org.mongodb</groupId>
   <artifactId>mongo-java-driver</artifactId>
   <version>3.12.2</version>
</dependency>

验证

以下JDBC程序连接到MongoDB数据库，请尝试执行它 −

示例

import com.mongodb.MongoClient;
public class ConnectToDB {
   public static void main( String args[] ) {
      //Creating a MongoDB client
      MongoClient mongo = new MongoClient( "localhost" , 27017 );
      //Accessing the database
      mongo.getDatabase("myDatabase");
      System.out.println("Connected to the database successfully");
   }
}

如果一切顺利，上述程序将生成以下输出 −

Connected to the database successfully

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