require 'http'
url = 'http://localhost/b.php'
data = 'whoami=whoami'
html = HTTP.via('127.0.0.1',8080).headers('Content-Type'=> 'application/x-www-form-urlencoded').post(url, :body => data)
puts html
引用perl6 中的 User-agent模块中的一段文本:
Adds the form data, supplied either as a Hash, an Array of Pair, or in a named parameter style, to the POST request (it doesn't make sense on most other request types.) The default is to use 'application/x-www-form-urlencoded' and 'multipart/form-data' can be used by providing the ':multipart' adverb. Alternatively a previously applied "content-type" header of either 'application/x-www-form-urlencoded' or 'multipart/form-data' will be respected and in the latter case any applied boundary marker will be retained.
原文出处:
https://github.com/sergot/http-useragent/blob/master/lib/HTTP/Request.pm6
perl6中, http-useragent中的 add-form-data 函数会自动添加如下头:
Content-Type : application/x-www-form-urlencoded
但在 ruby http模块中， 当你发送如下POST数据时:
data = "cmd=whoami" html = HTTP.post(url, body:data)
原始数据头为:
POST /b.php HTTP/1.1 Connection: close Host: localhost User-Agent: http.rb/3.0. Content-Length: cmd=whoami
些数据并没有 Contype-Type: application/x-www-form-urlencoded 头, 此时虽然发送了数据过去， 但服务端并不会接收到(因为少了Contype-Type:app......这一个header)
如果改用如下代码， Contype-Type: appli..... 头会默认为你加上。
data = {‘cmd’=>'whoami'}
html = HTTP.post(url, form:data)
原始数据包为:
POST /b.php HTTP/1.1 Connection: close Content-Type: application/x-www-form-urlencoded Host: localhost User-Agent: http.rb/3.0. Content-Length: cmd=whoami
form与body的差别是， form为hash类型， body为字符串型。
为了方使测试， 还是body比起form方便得多。
只是每次使用时， 记得加上：
Content-Type: application/x-www-form-urlencoded
示例代码:
require 'http'
url = 'http://localhost/b.php'
data = 'whoami=whoami'
html = HTTP.via('127.0.0.1',).headers('Content-Type'=> 'application/x-www-form-urlencoded').post(url, :body => data)
puts html
以上就是ruby http爬虫中的 :body 用法问题的详细内容，更多关于ruby http爬虫中的 :body 用法问题的资料请关注九品源码其它相关文章！