Question

我试图使用rest-client gem访问一些网站，我发现了一个让我感到困惑的行为。这与在一个糟糕的网站上使用rest-client有关，在本例中是www.google.com/this_does_not_exist。

我的期望：代码将运行且响应对象将有404响应代码。

实际发生了什么：有一个例外，代码提前终止。

当我尝试使用Net :: HTTP库时，我确实得到了预期的结果。

问题是：这种行为是否应该在rest-client中出现？如果是这样，在使用不良网站时，如何使用404响应代码取回对象。

以下是我的irb代码：

2.2.1 :045 > uri = URI('http://www.google.com')
 => #<URI::HTTP http://www.google.com> 
2.2.1 :046 > response = Net::HTTP.get_response(uri)
 => #<Net::HTTPOK 200 OK readbody=true> 
2.2.1 :047 > response.code
 => "200" 
2.2.1 :048 > uri = URI('http://www.google.com/this_does_not_exist')
 => #<URI::HTTP http://www.google.com/this_does_not_exist> 
2.2.1 :049 > response = Net::HTTP.get_response(uri)
 => #<Net::HTTPNotFound 404 Not Found readbody=true> 
2.2.1 :050 > response.code
 => "404" 
2.2.1 :051 > uri = URI('http://www.google.com')
 => #<URI::HTTP http://www.google.com> 
2.2.1 :052 > response = RestClient.get('http://www.google.com')
 => <RestClient::Response 200 "<!doctype h..."> 
2.2.1 :053 > response.code
 => 200 
2.2.1 :054 > response = RestClient.get('http://www.google.com/this_does_not_exist')
RestClient::NotFound: 404 Not Found
    from /Users/piperwarrior/.rvm/gems/ruby-2.2.1/gems/rest-client-2.0.0/lib/restclient/abstract_response.rb:223:in `exception_with_response'
    from /Users/piperwarrior/.rvm/gems/ruby-2.2.1/gems/rest-client-2.0.0/lib/restclient/abstract_response.rb:103:in `return!'
    from /Users/piperwarrior/.rvm/gems/ruby-2.2.1/gems/rest-client-2.0.0/lib/restclient/request.rb:860:in `process_result'
    from /Users/piperwarrior/.rvm/gems/ruby-2.2.1/gems/rest-client-2.0.0/lib/restclient/request.rb:776:in `block in transmit'
    from /Users/piperwarrior/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/net/http.rb:853:in `start'
    from /Users/piperwarrior/.rvm/gems/ruby-2.2.1/gems/rest-client-2.0.0/lib/restclient/request.rb:766:in `transmit'
    from /Users/piperwarrior/.rvm/gems/ruby-2.2.1/gems/rest-client-2.0.0/lib/restclient/request.rb:215:in `execute'
    from /Users/piperwarrior/.rvm/gems/ruby-2.2.1/gems/rest-client-2.0.0/lib/restclient/request.rb:52:in `execute'
    from /Users/piperwarrior/.rvm/gems/ruby-2.2.1/gems/rest-client-2.0.0/lib/restclient.rb:67:in `get'
    from (irb):54
    from /Users/piperwarrior/.rvm/rubies/ruby-2.2.1/bin/irb:11:in `<main>'
2.2.1 :055 >

Answer 1

来自GitHub README：

表示200和207之间的结果代码，将返回RestClient::Response

对于结果代码301，302或307，如果请求为GET或HEAD
，则会进行重定向
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，将提出持有响应的RestClient::Exception;将针对已知错误代码抛出特定的异常类

在异常上调用.response以获取服务器的响应

所以是的，这是预期的行为，可以使用e.response检索响应对象。

Net :: HTTP vs REST Client gem：它们如何处理坏网站/ 404

1 个答案: