如何在Java中更新现有字段，将mongodb文档嵌入到数组中

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

import static com.mongodb.client.model.Filters.eq;
import static com.mongodb.client.model.Updates.addToSet;
import static com.mongodb.client.model.Updates.set;

public class UpdateDocumentExample {
    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");

        // 更新现有字段
        Bson filter = eq("name", "John");
        Bson update = set("age", 30);
        collection.updateOne(filter, update);

        // 将MongoDB文档嵌入到数组中
        Document embeddedDocument = new Document("field1", "value1")
                .append("field2", "value2")
                .append("field3", "value3");

        Bson arrayUpdate = addToSet("embeddedDocuments", embeddedDocument);
        collection.updateOne(filter, arrayUpdate);

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