从Ruby HTTP请求获取响应头

Question

我正在使用Net :: HTTP向Ruby发出HTTP请求,我无法弄清楚如何获取所有响应头.

我试过了response.header,但response.headers没有任何工作.

Answer 1

响应对象实际上包含标头.

有关详细信息,请参阅" Net :: HTTPResponse ".

你可以做:

response['Cache-Control']

您还可以调用each_header或each在响应对象上迭代标头.

如果你真的想要在响应对象之外的标题,请调用 response.to_hash

Answer 2

响应Net::HTTPResponse包含标题Net::HTTPHeader，您可以从中获取each_header@Intrepidd 所说的方法，它将返回一个枚举器，如下所示：

response.each_header

#<Enumerator: #<Net::HTTPOK 200 OK readbody=true>:each_header>
[
  ["x-frame-options", "SAMEORIGIN"],
  ["x-xss-protection", "1; mode=block"],
  ["x-content-type-options", "nosniff"],
  ["content-type", "application/json; charset=utf-8"],
  ["etag", "W/\"51a4b917285f7e77dcc1a68693fcee95\""],
  ["cache-control", "max-age=0, private, must-revalidate"],
  ["x-request-id", "59943e47-5828-457d-a6da-dbac37a20729"],
  ["x-runtime", "0.162359"],
  ["connection", "close"],
  ["transfer-encoding", "chunked"]
]

您可以使用to_h以下方法获取实际哈希值：

response.each_header.to_h

{
  "x-frame-options"=>"SAMEORIGIN", 
  "x-xss-protection"=>"1; mode=block", 
  "x-content-type-options"=>"nosniff", 
  "content-type"=>"application/json; charset=utf-8", 
  "etag"=>"W/\"51a4b917285f7e77dcc1a68693fcee95\"", 
  "cache-control"=>"max-age=0, private, must-revalidate", 
  "x-request-id"=>"59943e47-5828-457d-a6da-dbac37a20729", 
  "x-runtime"=>"0.162359", 
  "connection"=>"close", 
  "transfer-encoding"=>"chunked"
}