AWS Cassandra nodejs-奇怪的结果

如何解决AWS Cassandra nodejs-奇怪的结果

我希望在nodejs中使用cassandra-driver与cassandra一起使用。

当我执行这样的简单查询时：

  const results = await chatDbClient.execute('SELECT * FROM chat_db.messages LIMIT 5');
  return results.rows;

我收到以下结果：

Row from Keyspaces Row {
  user_from: [Long],user_to: [Long],message_id: [TimeUuid],body: 'c'
}
[
  Row {
    user_from: Long { low: 1,high: 0,unsigned: false },user_to: Long { low: 2,message_id: TimeUuid {
      buffer: <Buffer f0 c2 49 b1 fd a4 11 ea 8b 02 85 9f 38 c2 63 74>
    },body: 'c'
  },Row {
    user_from: Long { low: 1,message_id: TimeUuid {
      buffer: <Buffer f0 c2 22 a3 fd a4 11 ea bc 5e cb 7d 37 47 a0 82>
    },body: 'f'
  },message_id: TimeUuid {
      buffer: <Buffer f0 c2 22 a2 fd a4 11 ea bc 5e cb 7d 37 47 a0 82>
    },body: 'e'
  },message_id: TimeUuid {
      buffer: <Buffer f0 c1 fb 95 fd a4 11 ea a3 0f 3b e9 2e a5 73 87>
    },body: 'd'
  },message_id: TimeUuid {
      buffer: <Buffer f0 c1 fb 94 fd a4 11 ea a3 0f 3b e9 2e a5 73 87>
    },body: 'm'
  }
]

但是，如果我出于测试目的直接从aws仪表板执行查询，则会收到以下消息：

为什么我的应用程序中的结果格式如此奇怪？

提前Tnx

解决方法

问题解决了，读取数据足以使用：toString（）

results.rows[i].user_to.toString()

,

在您的应用中尝试以下操作

import Photos
import UIKit

var ImageList: [UIImage] = []
var ImageListURL: [URL] = []

func getPhotos() {

let requestOptions = PHImageRequestOptions()
let manager = PHImageManager.default()
requestOptions.isSynchronous = false
requestOptions.deliveryMode = .highQualityFormat

let fetchOptions = PHFetchOptions()

let results: PHFetchResult = PHAsset.fetchAssets(with: .image,options: fetchOptions)

results.enumerateObjects { (asset,index,bool) in
    
    if results.count > 0 {
        for i in 0..<results.count {
            let asset = results.object(at: i)
            let size = CGSize(width: 700,height: 700)
            
            let contentEditing = PHContentEditingInputRequestOptions()
            
            asset.requestContentEditingInput(with: contentEditing) { (contentInput,dic) in
                guard let assetUrl = contentInput?.fullSizeImageURL else { return }
                ImageListURL.append(assetUrl)
                print("\(index):\(assetUrl)")
            }
            
            manager.requestImage(for: asset,targetSize: size,contentMode: .aspectFill,options: requestOptions) { (image,_) in
                if let image = image {
                    ImageList.append(image)
                    
                } else {
                    print("Error for Url")
                }
            }
        }
    } else {
        print("No photos in your library")
    }
}
}