Ruby/Rails - 错误的 URI

发布于 2024-12-24 02:06:21 字数 668 浏览 0 评论 0原文

不知道为什么当 URI 在浏览器中正常工作时我会收到以下错误：

http://oracleofbacon.org/cgi-bin/xml?a=Kevin Bacon&b=Tom Cruise&u=1&p=google-apps

这是我的代码：

def kb(to)

    uri = "http://oracleofbacon.org/cgi-bin/xml?a=Kevin Bacon&b=#{to.strip}&u=1&p=google-apps"
    doc = Nokogiri::XML(open(uri)) # throws error on this line

    return parse(doc)
end

我收到以下错误：

in `split': bad URI(is not URI?): http://oracleofbacon.org/cgi-bin/xml?a=Kevin Bacon&b=Tom Cruise&u=1&p=google-apps (URI::InvalidURIError)`

我按以下方式执行该方法：

kb("Tom Cruise")

原文

Not sure why I'm getting the following error when the URI works just fine in the browser:

http://oracleofbacon.org/cgi-bin/xml?a=Kevin Bacon&b=Tom Cruise&u=1&p=google-apps

This is my code:

def kb(to)

    uri = "http://oracleofbacon.org/cgi-bin/xml?a=Kevin Bacon&b=#{to.strip}&u=1&p=google-apps"
    doc = Nokogiri::XML(open(uri)) # throws error on this line

    return parse(doc)
end

I get the following error:

in `split': bad URI(is not URI?): http://oracleofbacon.org/cgi-bin/xml?a=Kevin Bacon&b=Tom Cruise&u=1&p=google-apps (URI::InvalidURIError)`

I execute the method in the following way:

kb("Tom Cruise")

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手长情犹 2024-12-31 02:06:21

这是因为浏览器是病态友好的，就像小狗一样，会不遗余力地呈现页面或解析 URL。应用程序不会这样做，因为您必须告诉它如何保持友好。

您的 URL 无效，因为它嵌入了空格。将空格替换为 %20：

irb -f
irb(main):001:0> require 'open-uri'
=> true
irb(main):002:0> open('http://oracleofbacon.org/cgi-bin/xml?a=Kevin%20Bacon&b=Tom%20Cruise&u=1&p=google-apps').read
=> "<?xml version=\"1.0\" standalone=\"no\"?>\n<link><actor>Tom Cruise</actor><movie>A Few Good Men (1992)</movie><actor>Kevin Bacon</actor></link>"

转义需要转义的字符很容易：

irb -f
irb(main):001:0> require 'uri'
=> true
irb(main):002:0> URI.escape('http://oracleofbacon.org/cgi-bin/xml?a=Kevin Bacon&b=Tom Cruise&u=1&p=google-apps')
=> "http://oracleofbacon.org/cgi-bin/xml?a=Kevin%20Bacon&b=Tom%20Cruise&u=1&p=google-apps"

It's because a browser is pathologically friendly, like a puppy, and will go to great lengths to render a page or resolve a URL. An application won't do that because you have to tell it how to be friendly.

Your URL is not valid because it has embedded spaces. Replace the spaces with %20:

irb -f
irb(main):001:0> require 'open-uri'
=> true
irb(main):002:0> open('http://oracleofbacon.org/cgi-bin/xml?a=Kevin%20Bacon&b=Tom%20Cruise&u=1&p=google-apps').read
=> "<?xml version=\"1.0\" standalone=\"no\"?>\n<link><actor>Tom Cruise</actor><movie>A Few Good Men (1992)</movie><actor>Kevin Bacon</actor></link>"

Escaping the characters needing to be escaped is easy:

irb -f
irb(main):001:0> require 'uri'
=> true
irb(main):002:0> URI.escape('http://oracleofbacon.org/cgi-bin/xml?a=Kevin Bacon&b=Tom Cruise&u=1&p=google-apps')
=> "http://oracleofbacon.org/cgi-bin/xml?a=Kevin%20Bacon&b=Tom%20Cruise&u=1&p=google-apps"

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