javascript - 如何从Node中的图像URL将图像上传到Google Cloud Storage？

给定图像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？

最佳答案

这是一个2个步骤的过程:

使用request或fetch在本地下载文件。

使用官方library上传到GCL。

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.
  });

如果要将文件另存为jpeg图像，则需要编辑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'
      }
    }
}))

我在浏览documentation时发现了这个