如何设置MongoDB Java环境？

Installing and running MongoDB

• 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>

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• 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

  

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• 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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