javascript - 如何从 Node 中的图片 url 将图片上传到 Google Cloud Storage？

Question

给定一个图像 url，我如何将该图像上传到 Google Cloud Storage 以使用 Node.js 进行图像处理？

Answer 1

这是一个两步过程:

• 使用 request 在本地下载文件或 fetch .

• 用官方上传到GCL library .

  var fs = require('fs');
  var gcloud = require('gcloud');
  
  // Authenticating on a per-API-basis. You don't need to do this if you auth on a
  // global basis (see Authentication section above).
  
  var gcs = gcloud.storage({
    projectId: 'my-project',
    keyFilename: '/path/to/keyfile.json'
  });
  
  // Create a new bucket.
  gcs.createBucket('my-new-bucket', function(err, bucket) {
    if (!err) {
      // "my-new-bucket" was successfully created.
    }
  });
  
  // Reference an existing bucket.
  var bucket = gcs.bucket('my-existing-bucket');                
  var localReadStream = fs.createReadStream('/photos/zoo/zebra.jpg');
  var remoteWriteStream = bucket.file('zebra.jpg').createWriteStream();
  localReadStream.pipe(remoteWriteStream)
    .on('error', function(err) {})
    .on('finish', function() {
      // The file upload is complete.
    });
  

如果您想将文件保存为 jpeg 图像，您将需要编辑 remoteWriteStream 流并添加自定义元数据:

var image = bucket.file('zebra.jpg');
localReadStream.pipe(image.createWriteStream({
    metadata: {
      contentType: 'image/jpeg',
      metadata: {
        custom: 'metadata'
      }
    }
}))

我在挖掘这个 documentation 时发现了这个