mongodb java驱动程序中如何使用两个字段进行排序

import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoCursor;
import com.mongodb.client.MongoDatabase;
import com.mongodb.client.model.Sorts;
import org.bson.Document;

public class MongoDBSortExample {
    public static void main(String[] args) {
        // 连接到MongoDB数据库
        MongoClient mongoClient = new MongoClient("localhost", 27017);
        MongoDatabase database = mongoClient.getDatabase("mydb");
        MongoCollection<Document> collection = database.getCollection("mycollection");

        // 创建排序规则
        Bson sort = Sorts.orderBy(Sorts.ascending("field1"), Sorts.descending("field2"));

        // 执行查询并排序
        MongoCursor<Document> cursor = collection.find().sort(sort).iterator();
        while (cursor.hasNext()) {
            Document document = cursor.next();
            System.out.println(document);
        }

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