如何允许使用 GRAPE API 下载二进制文件 [英] How to allow Binary File download using GRAPE API

问题描述

我想允许使用 ruby​​ 的 Grape API 下载二进制文件(.p12 文件).这就是我正在尝试的.

I want to allow downloading a binary file (.p12 file) using ruby's Grape API. This is what I am trying.

get '/download_file' do
  pkcs12 = generate_pkcsfile 
  content_type('application/octet-stream')
  body(pkcs12.der)
end

使用 ActionController 的等效代码是

The equivalent code using ActionController is

begin
  pkcs12 = generate_pkcsfile
  send_data(pkcs12.der,
            :filename => 'filename.p12')
end

问题是使用 API 下载的文件似乎是文本文件，每个字符都嵌入了 '\ufffd' 前缀，而使用浏览器下载的文件似乎是二进制文件.我如何使用 GRAPE API 框架来允许下载通过 ActionController 的 send_data 下载的相同文件

The problem is the file downloaded using the API seems to be a text file with a '\ufffd' prefix embedded for every character, whereas the file downloaded using the browser seems to be binary file. How do I use the GRAPE API framework to allow downloading the same file that is downloaded via ActionController's send_data

推荐答案

存在问题 #412 和 #418 已报告给葡萄 github 页面.哪些与返回二进制文件和覆盖内容类型有关.

There are issues #412 and #418 have been reported to grape github page. Which are related to return a binary file and override content type.

像这样返回二进制格式:

To return binary format like so:

get '/download_file' do
    content_type "application/octet-stream"
    header['Content-Disposition'] = "attachment; filename=yourfilename"
    env['api.format'] = :binary
    File.open(your_file_path).read
end

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