像打开普通文件那样打开http/ftp的URL
open("http://www.ruby-lang.org/") {|f|
f.each_line {|line| p line}
}
打开的文件对象已经被OpenURI::Meta所扩展, 您可以方便地获取meta信息
open("http://www.ruby-lang.org/en") {|f|
f.each_line {|line| p line}
p f.base_uri # <URI::HTTP:0x40e6ef2 URL:http://www.ruby-lang.org/en/>
p f.content_type # "text/html"
p f.charset # "iso-8859-1"
p f.content_encoding # []
p f.last_modified# Thu Dec 05 02:45:02 UTC 2002
}
使用哈希表参数,您就可以指定添加的头字段
open("http://www.ruby-lang.org/en/",
"User-Agent" => "Ruby/#{RUBY_VERSION}",
"From" => "foo@bar.invalid",
"Referer" => "http://www.ruby-lang.org/") {|f|
...
}
在默认情况下,http_proxy以及ftp_proxy这些环境变量都是有效的. 若想禁用代理,可以这样 :proxy => nil
open("http://www.ruby-lang.org/en/raa.html",
:proxy => nil) {|f|
...
}
URI对象的打开方式也是类似的
uri = URI.parse("http://www.ruby-lang.org/en/")
uri.open {|f|
...
}
可以直接读取URI对象。返回的字符串已经被OpenURI::Meta所扩展
str = uri.read
p str.base_uri
访问https请求，open-uri + OpenSSL
request_uri=URI.parse('myurl')
request_uri.query=URI.encode_www_form params
output = open(request_uri, {ssl_verify_mode:OpenSSL::SSL::VERIFY_NONE})
obj = JSON.parse output.readlines.join("")
ruby发送https请求示例
require 'net/http'
require 'json'
require 'openssl'
#url = URI.parse('https://github.com')
url = URI.parse('https://localhost:3000')
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true if url.scheme == 'https'
http.verify_mode = OpenSSL::SSL::VERIFY_NONE
req = Net::HTTP::Post.new('/', {'Content-Type' => 'application/json'})
req.body = JSON[{"name" => {"xx" => "xx","tt" => "yy"},"age" => "2"}]
puts req.body
puts http.request(req).body
