当请求文件时，如何让Azure在响应中返回“Accept

编程入门行业动态更新时间:2024-10-26 23:24:59

当请求文件时，如何让Azure在响应中返回“Accept-Ranges”和“Content-Encoding”标头？(How do I get Azure to return the 'Accept-Ranges' and 'Content-Encoding' headers in the response when a file is requested?)

我正在使用Azure blob存储，当我对文件执行GET请求时，我希望响应包含“Accept-Ranges”和“Content-Encoding”的标头。

我已经针对我的blob服务器运行了以下代码，首先允许这些：

var url = new Uri(String.Format("https://yourblob.blob.core.windows.net")); var credentials = new StorageCredentials("accountname", "key"); var client = new CloudBlobClient(url, credentials); var corsRule = new CorsRule(); corsRule.ExposedHeaders.Add("Accept-Ranges"); corsRule.ExposedHeaders.Add("Content-Encoding"); corsRule.ExposedHeaders.Add("Content-Length"); corsRule.ExposedHeaders.Add("Content-Type"); corsRule.AllowedHeaders.Add("Accept-Ranges"); corsRule.AllowedHeaders.Add("Content-Encoding"); corsRule.AllowedHeaders.Add("Content-Length"); corsRule.AllowedHeaders.Add("Content-Type"); var serviceProperties = CloudBlobClient.GetServiceProperties(); serviceProperties.Cors.CorsRules.Clear(); serviceProperties.Cors.CorsRules.Add(corsRule); client.SetServiceProperties(serviceProperties);

这似乎有效，因为之前当我在返回的对象上运行以下Javascript时，我收到一条错误，说Refused to get unsafe header "Accept-Ranges" ，我不再收到此错误：

var fullRequestXhr = networkManager.getRequestXhr(fullRequestXhrId); if (fullRequestXhr.getResponseHeader('Accept-Ranges') !== 'bytes') { return; }

但标题也不存在。我发现这篇博文建议将我的azure blob服务器的DefaultServiceVersion更改为“2012-02-12”。我已经这样做了，但仍然没有看到所需的标题。

我需要这些用于我正在使用的库（pdf.js），如果存在这些库，则允许以块的形式加载pdf文件。也许在上传之前我需要对文件做些什么？

任何帮助将不胜感激，谢谢。

I am using Azure blob storage, and when I do a GET request for a file I want the response to include headers for 'Accept-Ranges' and 'Content-Encoding'.

I have ran the following code against my blob server to first allow these:

This seems to have worked because before when I ran the following Javascript on the object returned I was getting an error saying Refused to get unsafe header "Accept-Ranges", I no longer get this error:

var fullRequestXhr = networkManager.getRequestXhr(fullRequestXhrId); if (fullRequestXhr.getResponseHeader('Accept-Ranges') !== 'bytes') { return; }

But the header isn't present either. I found this blog post which suggested changing the DefaultServiceVersion of my azure blob server to "2012-02-12". I have done this and am still not seeing the needed headers.

I need these for a library I am using (pdf.js) which allows, if these are present, to load a pdf file in chunks. Maybe there is something I need to do to the file before it is uploaded?

Any help would be appreciated, thanks.