如何使用gridfs在MongoDB中存储ZIP文件

Question

想要将ZIP文件存储在我的MongoDB数据库中，它们超过16 MB 我尝试使用mongoose-gridfs，但无法取回文件

mongoose.connect('mongodb://localhost:27017/cache').then(() => {
  const { model: Attachment } = gridfs({
    collection: 'attachments',
    model: 'Attachment',
    mongooseConnection: mongoose.connection
  });

  const readStream = fs.createReadStream('./test.zip');
  const options = ({ filename: 'cache.zip', contentType: 'application/zip' });

  Attachment.write(options, readStream, (error, file) => console.log(error,file) );
});

例如，它返回一个对象ID-5cc2d68d9572233b3004952a 但后来我尝试获取该文件

  Attachment.readById('5cc2d68d9572233b3004952a', (err, buffer ) => console.log(buffer));

我没有定义

在我的MongoDB中（屏幕）  attachment chunks  attachemnt files