Java 클라우드 데이터베이스 개발 가이드: Huawei Cloud MongoDB를 사용하여 데이터 스토리지 구현

import com.mongodb.MongoClient;
import com.mongodb.MongoClientURI;
import com.mongodb.client.MongoDatabase;

public class MongoDBConnect {
   public static void main( String[] args ) {
      // 连接到MongoDB数据库
      MongoClientURI uri = new MongoClientURI("mongodb://username:password@host:port/dbname");
      MongoClient mongoClient = new MongoClient(uri);
      MongoDatabase database = mongoClient.getDatabase("dbname");
        
      System.out.println("Connected to the database successfully");
   }
}

import org.bson.Document;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoDatabase;

public class InsertData {
   public static void main( String[] args ) {
      // 连接到MongoDB数据库
      MongoDatabase database = mongoClient.getDatabase("dbname");
      MongoCollection<Document> collection = database.getCollection("collectionname");
        
      // 创建文档数据
      Document document = new Document("title", "Java云数据库开发指南")
         .append("content", "使用华为云MongoDB实现数据存储")
         .append("author", "John")
         .append("date", new Date());
        
      // 将文档数据插入到MongoDB数据库
      collection.insertOne(document);
        
      System.out.println("Document inserted successfully");
   }
}

import org.bson.Document;
import com.mongodb.client.FindIterable;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoDatabase;

public class QueryData {
   public static void main( String args[] ) {
      // 连接到MongoDB数据库
      MongoDatabase database = mongoClient.getDatabase("dbname");
      MongoCollection<Document> collection = database.getCollection("collectionname");
        
      // 查询所有的文档数据
      FindIterable<Document> documents = collection.find();
      for (Document document : documents) {
         System.out.println(document);
      }
   }
}