如果进程以参数开始，Ruby readline 会失败 [英] Ruby readline fails if process started with arguments

问题描述

我遇到了最奇怪的问题.下面的代码工作正常:

I'm having the strangest issue. This code below works fine:

require 'json'
require 'net/http'
h = Net::HTTP.new("localhost", 4567) 
while(l = gets.chomp!)
   res = h.post("/api/v1/service/general",l)
   puts res.body
end

但是，通过从参数中获取主机/端口的小修改:

However, with the small modification of getting host/port from parameters:

require 'json'
require 'net/http'
h = Net::HTTP.new(ARGV[0], ARGV[1]) 
while(l = gets.chomp!)
   res = h.post("/api/v1/service/general",l)
   puts res.body
end

..并以 ruby service.rb localhost 4567 开头 ...

..and starting with ruby service.rb localhost 4567 ...

我收到此错误:

service.rb:4:in `gets': No such file or directory - localhost (Errno::ENOENT)

在 Ubuntu 11.04 上使用 ruby​​ 1.9.2p0

Using ruby 1.9.2p0 on Ubuntu 11.04

推荐答案

你试过 while (l = $stdin.gets.chomp!) 吗?否则 Kernel#gets 从 ARGV 读取.

Have you tried while (l = $stdin.gets.chomp!)? Otherwise Kernel#gets reads from ARGV.

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