使用Java从mongodb读取blob (二进制)数据时出错

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

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

        // 读取二进制数据
        Document document = collection.find().first();
        byte[] binaryData = document.get("your_binary_field_name", Binary.class).getData();

        // 处理二进制数据
        // TODO: 在这里进行你的处理逻辑

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