Mongodb原生查询和等效的java代码

db.collection.find({ "name": "John", "age": { "$gt": 25 } })

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

public class MongoDBExample {
    public static void main(String[] args) {
        // 连接到Mongodb数据库
        MongoClient mongoClient = MongoClients.create("mongodb://localhost:27017");
        // 选择数据库
        MongoDatabase database = mongoClient.getDatabase("mydb");
        // 选择集合
        MongoCollection<Document> collection = database.getCollection("mycollection");

        // 构建查询条件
        Document query = new Document();
        query.append("name", "John");
        query.append("age", new Document("$gt", 25));

        // 执行查询
        for (Document document : collection.find(query)) {
            System.out.println(document.toJson());
        }

        // 关闭连接
        mongoClient.close();
    }
}