httppoison - 响应正文显示乱码而不是 html

Question

如果我尝试：

url = "https://www.economist.com/news/finance-and-economics/21727073-economists-struggle-work-out-how-much-free-economy-comes-cost"    
{:ok, %HTTPoison.Response{status_code: 200, body: body}} = HTTPoison.get(url)
IO.binwrite body

我在控制台中看到乱码（而不是 html）。但是如果我在网页上查看源代码，我会在那里看到 html。我做错了什么？

PS：它在 js http 客户端（axios.js）上工作正常，不知道为什么它不能与 httppoison

一起工作

Answer 1

URL returns 和 body 的 gzip 格式，并通过发送 header Content-Encoding: gzip 来表明这一点。 hackney，建立在 HTTPoison 之上的库不会自动对此进行解码。此功能 will likely be added at some point。在那之前，如果 Content-Encoding 是 gzip:

，您可以使用 :zlib 模块自己解码 body

url = "https://www.economist.com/news/finance-and-economics/21727073-economists-struggle-work-out-how-much-free-economy-comes-cost"

{:ok, %HTTPoison.Response{status_code: 200, headers: headers, body: body}} = HTTPoison.get(url)

gzip? = Enum.any?(headers, fn {name, value} ->
  # Headers are case-insensitive so we compare their lower case form.
  :hackney_bstr.to_lower(name) == "content-encoding" &&
    :hackney_bstr.to_lower(value) == "gzip"
end)

body = if gzip?, do: :zlib.gunzip(body), else: body

IO.write body

httppoison - 响应正文显示乱码而不是 html

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utf-8

elixir

httpoison