Google Cloud Storage通过已签名的网址上传设置缓存控制 [英] Google Cloud Storage set cache-control with signed urls upload

问题描述

我们使用已签名的网址从浏览器上传。我一直无法弄清楚如何在上传时设置缓存控制头。

我们使用gcloud-node库来签名url： p>

  var bucket = gcs.bucket（'mybucket'）; 
 var file = bucket.file（'image.jpg'）; 
 
 var expireDate = new Date 
 expireDate.setDate（expireDate.getDate（）+ 1）; 
 
 file.getSignedUrl（{
 action：'write'，
 expires：expireDate，
 contentType：'image / jpeg'
}，function err，signedUrl）{
 if（err）{
 console.error（'SignedUrl error'，err）; 
} else {
 console.log（signedUrl）; 
} 
}）; 
  

如何在将文件上传到GCS时设置Cache-Control头？

上传的代码在浏览器中运行：

  var signedUrl = ...; //从nodejs服务器获取
 var fileList = this.files; 
 
 var file = fileList [0]; 
 
 jQuery.ajax（{
 url：signedUrl，
 type：'PUT'，
 data：file，
 processData：false，
 contentType：'image / jpeg'
}）
  

解决方案

你有一个签名的网址。当您将对象上传（插入）到GCS中时，您应该可以通过API来设置它： https://cloud.google.com/storage/docs/json_api/v1/objects/insert

We're using signed urls to upload from the browser. I haven't been able to figure out how to set the cache-control header while uploading.

We're using the gcloud-node library to sign urls:

var bucket = gcs.bucket('mybucket');
var file = bucket.file('image.jpg');

var expireDate = new Date
expireDate.setDate(expireDate.getDate() + 1);

file.getSignedUrl({
  action: 'write',
  expires: expireDate,
  contentType: 'image/jpeg'
}, function (err, signedUrl) {
  if (err) {
    console.error('SignedUrl error', err);
  } else {
    console.log(signedUrl);
  }
});

How do I set the Cache-Control headers while uploading a file to GCS?
The code to upload is running in the browser:

var signedUrl = ...; // get from nodejs server
var fileList = this.files;

var file = fileList[0];

jQuery.ajax({
  url: signedUrl,
  type: 'PUT',
  data: file,
  processData: false,
  contentType: 'image/jpeg'
})

解决方案

the snippet you have is getting a signed url. when you upload (insert) the object into GCS, you should be able to set it via the API:

https://cloud.google.com/storage/docs/json_api/v1/objects/insert

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