在MongoDb中获取/返回新插入或新修改的文档(使用java驱动)

import com.mongodb.MongoClient;
import com.mongodb.MongoClientURI;
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
        MongoClientURI uri = new MongoClientURI("mongodb://localhost:27017");
        MongoClient mongoClient = new MongoClient(uri);
        MongoDatabase database = mongoClient.getDatabase("mydb");
        MongoCollection<Document> collection = database.getCollection("mycollection");

        // 插入文档
        Document document = new Document("name", "John Doe")
                .append("age", 30)
                .append("email", "johndoe@example.com");
        collection.insertOne(document);

        // 获取新插入的文档
        Document insertedDocument = collection.find(document).first();
        System.out.println("新插入的文档：" + insertedDocument.toJson());

        // 修改文档
        Document updateQuery = new Document("name", "John Doe");
        Document updateDocument = new Document("$set", new Document("age", 35));
        collection.updateOne(updateQuery, updateDocument);

        // 获取新修改的文档
        Document updatedDocument = collection.find(updateQuery).first();
        System.out.println("新修改的文档：" + updatedDocument.toJson());

        // 关闭数据库连接
        mongoClient.close();
    }
}