使用Ruby将png图像发布到pngcrush [英] Post png image to pngcrush with Ruby
本文介绍了使用Ruby将png图像发布到pngcrush的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
在ruby中,我希望得到与下面的代码相同的结果,但不使用curl:
In ruby, I want to get the same result than the code below but without using curl:
curl_output = `curl -X POST -s --form "input=@#{png_image_file};type=image/png" http://pngcrush.com/crush > #{compressed_png_file}`
我试过这个:
#!/usr/bin/env ruby
require "net/http"
require "uri"
# Image to crush
png_image_path = "./media/images/foo.png"
# Crush with http://pngcrush.com/
png_compress_uri = URI.parse("http://pngcrush.com/crush")
png_image_data = File.read(png_image_path)
req = Net::HTTP.new(png_compress_uri.host, png_compress_uri.port)
headers = {"Content-Type" => "image/png" }
response = req.post(png_compress_uri.path, png_image_data, headers)
p response.body
# => "Input is empty, provide a PNG image."
推荐答案
您的代码存在的问题是您不需要发送服务器的参数( http://pngcrush.com/crush 的输入)。这对我有用:
The problem with your code is you do not send required parameter to the server ("input" for http://pngcrush.com/crush). This works for me:
require 'net/http'
require 'uri'
uri = URI.parse('http://pngcrush.com/crush')
form_data = [
['input', File.open('filename.png')]
]
http = Net::HTTP.new(uri.host, uri.port)
request = Net::HTTP::Post.new uri
# prepare request parameters
request.set_form(form_data, 'multipart/form-data')
response = http.request(request)
# save crushed image
open('crushed.png', 'wb') do |file|
file.write(response.body)
end
但是我建议你使用 RestClient 。它将net / http与很酷的功能(如多部分表单数据)封装起来,只需要几行代码即可完成工作:
But I suggest you to use RestClient. It encapsulates net/http with cool features like multipart form data and you need just a few lines of code to do the job:
require 'rest_client'
resp = RestClient.post('http://pngcrush.com/crush',
:input => File.new('filename.png'))
# save crushed image
open('crushed.png', 'wb') do |file|
file.write(resp)
end
用<$ c安装$ c> gem install rest-client
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