Ruby 主机名未知：sub.localhost:3000

我正在使用shoes的GUI builder，当我向本地Rails服务器发出一个简单的HTTP请求时，会出现以下错误

所以当我提出请求时

res = Net::HTTP.get(URI.parse("http://sub.localhost:3000"))

我得到一个错误：

Hostname not known: sub.localhost
/Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/resolv-replace.rb:12:in `rescue in getaddress'
/Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/resolv-replace.rb:9:in `getaddress'
/Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/resolv-replace.rb:23:in `initialize'
/Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/net/http.rb:879:in `open'
/Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/net/http.rb:879:in `block in connect'
/Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/timeout.rb:73:in `timeout'
/Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/net/http.rb:878:in `connect'
/Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/net/http.rb:863:in `do_start'
/Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/net/http.rb:852:in `start'
/Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/net/http.rb:1375:in `request'
shoes.rb:24:in `request'
shoes.rb:63:in `block (3 levels) in <main>'
-e:1:in `call'
/Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/resolv-replace.rb:12:in `rescue in getaddress'
/Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/resolv-replace.rb:9:in `getaddress'
/Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/resolv-replace.rb:23:in `initialize'
/Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/net/http.rb:879:in `open'
/Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/net/http.rb:879:in `block in connect'
/Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/timeout.rb:73:in `timeout'
/Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/net/http.rb:878:in `connect'
/Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/net/http.rb:863:in `do_start'
/Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/net/http.rb:852:in `start'
/Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/net/http.rb:1375:in `request'
shoes.rb:24:in `request'
shoes.rb:63:in `block (3 levels) in <main>'
-e:1:in `call'

主机名未知：sub.localhost /Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/resolv replace.rb:12:in'rescue in getaddress' /Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/resolv replace.rb:9:in'getaddress' /Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/resolv replace.rb:23:in'initialize' /Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/net/http.rb:879:in'open' /Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/net/http.rb:879:in'block in connect' /Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/timeout.rb:73:in'timeout' /Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/net/http.rb:878:in'connect' /Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/net/http.rb:863:in'do_start' /Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/net/http.rb:852:in'start' /Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/net/http.rb:1375:in'request' 鞋子。rb:24:in'request' 鞋子。rb:63:in‘block（3层）in’ -e:1:call中的 /Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/resolv replace.rb:12:in'rescue in getaddress' /Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/resolv replace.rb:9:in'getaddress' /Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/resolv replace.rb:23:in'initialize' /Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/net/http.rb:879:in'open' /Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/net/http.rb:879:in'block in connect' /Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/timeout.rb:73:in'timeout' /Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/net/http.rb:878:in'connect' /Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/net/http.rb:863:in'do_start' /Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/net/http.rb:852:in'start' /Applications/Shoes.app/Contents/MacOS/lib/ruby/2.2.0/net/http.rb:1375:in'request' 鞋子。rb:24:in'request' 鞋子。rb:63:in‘block（3层）in’ -e:1:call中的 我的hosts文件具有

127.0.0.1 sub.localhost

，我可以访问该地址并对其提出请求，这没有问题，只是不在shoes项目中

我按照问题的建议绑定了本地ip地址

ex123.12.12.1

，但得到了相同的错误

主机名未知：sub.123.12.12.1

据说删除了shoes项目中的行

resolv replace.rb:9:in

，但我得到了相同的错误

Hostname未知：sub.123.12.12.1

我在Mac电脑上

使用a确保Ruby查看

主机

文件：

require 'resolv-replace'

hosts_resolver = Resolv::Hosts.new('custom_hosts')
dns_resolver = Resolv::DNS.new

Resolv::DefaultResolver.replace_resolvers([hosts_resolver, dns_resolver])

require "net/http"
require "uri"

res = Net::HTTP.get(URI.parse("http://sub.localhost:3000"))

---

现在

Net:：HTTP

将使用您的自定义解析器，首先检查

主机

，并成功解析您的自定义域。

我已经看到了这一点……这非常完美。我希望你能早点到这里，但我最终还是花了

ngrok

让它工作起来。哈