如何使用 Ruby Rest-Client 处理异常 [英] How to handle exceptions with Ruby Rest-Client

问题描述

我最近从 Ruby 的 Net:HTTP 类切换到了 rest-client 1.6.7.

I recently switched from Ruby's Net:HTTP class to rest-client 1.6.7.

我发现形成请求要容易得多，但与 Net:HTTP 请求不同的是，当 rest-client 得到 200 以外的任何内容时，请求就会终止.我试过在 RestClient.get 之后直接放置一个断点，但它永远不会被击中 - 所以我做错了什么.

I find it a lot easier to form requests, but unlike Net:HTTP request, when rest-client gets anything other than a 200, the request dies. I've tried putting a breakpoint directly after the RestClient.get, and it never gets hit - so I'm doing something wrong.

def get_member_using_card
  resource = "#{@settings_app_uri}api/v1/card/#{self.member_card_num}?token=#{@settings.api_key}"
  response = RestClient.get resource
  if response.code == 200 
    card = JSON.parse(response.body)
    self.customer_id = card['card']['customer_id']
  else
    return 0
  end
end

导致此堆栈跟踪的结果:

Which results in this stacktrace:

RestClient::ResourceNotFound - 404 Resource Not Found:
        /Users/tim/.rvm/gems/ruby-1.9.2-p290/gems/rest-client-1.6.7/lib/restclient/abstr
act_response.rb:48:in `return!'
        /Users/tim/.rvm/gems/ruby-1.9.2-p290/gems/rest-client-1.6.7/lib/restclient/reque
st.rb:230:in `process_result'
        /Users/tim/.rvm/gems/ruby-1.9.2-p290/gems/rest-client-1.6.7/lib/restclient/reque
st.rb:178:in `block in transmit'
        /Users/tim/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/net/http.rb:627:in `start'
        /Users/tim/.rvm/gems/ruby-1.9.2-p290/gems/rest-client-1.6.7/lib/restclient/reque
st.rb:172:in `transmit'
        /Users/tim/.rvm/gems/ruby-1.9.2-p290/gems/rest-client-1.6.7/lib/restclient/reque
st.rb:64:in `execute'
        /Users/tim/.rvm/gems/ruby-1.9.2-p290/gems/rest-client-1.6.7/lib/restclient/reque
st.rb:33:in `execute'
        /Users/tim/.rvm/gems/ruby-1.9.2-p290/gems/rest-client-1.6.7/lib/restclient.rb:68
:in `get'

谁能告诉我如何正确评估响应代码并防止发生此异常...?

Can someone tell me how to properly evaluate the response code and keep this exception from happening...?

推荐答案

请参阅 例外"noreferrer">http://rubydoc.info/gems/rest-client/

See heading Exceptions on http://rubydoc.info/gems/rest-client/

• 对于 200 到 207 之间的结果代码，将返回 RestClient::Response
• 对于结果代码 301、302 或 307，如果请求是 get 或 head，则将遵循重定向
• 对于结果代码 303，将遵循重定向并将请求转换为 get
• 对于其他情况，将引发包含响应的 RestClient::Exception，将抛出特定的异常类以获取已知错误代码

RestClient.get 'http://example.com/resource'
➔ RestClient::ResourceNotFound: RestClient::ResourceNotFound`

begin
  RestClient.get 'http://example.com/resource'
rescue => e
  e.response
end
➔ 404 Resource Not Found | text/html 282 bytes

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