ruby – 使用法拉第上传文件

发布时间：2020-12-16 20:54:36 所属栏目：百科来源：网络整理

导读：我在尝试使用Faraday将文件上传到Web服务时遇到问题. 我的代码： conn = Faraday.new('http://myapi') do |f| f.request :multipartendpayload = { :file = Faraday::UploadIO.new('...','image/jpeg') }conn.post('/',payload) 尝试发布后似乎没有任何事情

我在尝试使用Faraday将文件上传到Web服务时遇到问题.

我的代码：

conn = Faraday.new('http://myapi') do |f|
  f.request :multipart
end

payload = { :file => Faraday::UploadIO.new('...','image/jpeg') }

conn.post('/',payload)

尝试发布后似乎没有任何事情发生.当我检查响应this是我所看到的：

#<Faraday::Response:0x007fd9e5903870 @env={:method=>:post,:body=>#<Faraday::CompositeReadIO:0x007fd9e5903a50 @parts=[#<Parts::FilePart:0x007fd9e5903e38 @head="-------------RubyMultipartPostrnContent-Disposition: form-data; name="file"; filename="indymade-badge-horizontal.png"rnContent-Length: 7821rnContent-Type: image/pngrnContent-Transfer-Encoding: binaryrnrn",@foot="rn",@length=8026,@io=#<CompositeReadIO:0x007fd9e5903b68 @ios=[#<StringIO:0x007fd9e5903bb8>,#<UploadIO:0x007fd9e514a3b8 @content_type="image/png",@original_filename="indymade-badge-horizontal.png",@local_path="/Users/anthonator/Downloads/indymade-badge-horizontal.png",@io=#<File:/Users/anthonator/Downloads/indymade-badge-horizontal.png>,@opts={}>,#<StringIO:0x007fd9e5903b90>],@index=0>>,#<Parts::EpiloguePart:0x007fd9e5903ac8 @part="-------------RubyMultipartPost--rnrn",@io=#<StringIO:0x007fd9e5903a78>>],@ios=[#<CompositeReadIO:0x007fd9e5903b68 @ios=[#<StringIO:0x007fd9e5903bb8>,@index=0>,#<StringIO:0x007fd9e5903a78>],:url=>#<URI::HTTPS:0x007fd9e5909d60 URL:https://myapi>,:request_headers=>{"User-Agent"=>"Faraday v0.8.7","Content-Type"=>"multipart/form-data;boundary=-----------RubyMultipartPost","Content-Length"=>"8062"},:parallel_manager=>nil,:request=>{:proxy=>nil,:boundary=>"-----------RubyMultipartPost"},:ssl=>{},:response=>#<Faraday::Response:0x007fd9e5903870 ...>},@on_complete_callbacks=[]>
irb(main):065:0> response.inspect
=> "#<Faraday::Response:0x007fd9e5903870 @env={:method=>:post,:body=>#<Faraday::CompositeReadIO:0x007fd9e5903a50 @parts=[#<Parts::FilePart:0x007fd9e5903e38 @head="-------------RubyMultipartPostrnContent-Disposition: form-data; name="file"; filename="indymade-badge-horizontal.png"rnContent-Length: 7821rnContent-Type: image/pngrnContent-Transfer-Encoding: binaryrnrn",@foot="rn",#<UploadIO:0x007fd9e514a3b8 @content_type="image/png",@original_filename="indymade-badge-horizontal.png",@local_path="/Users/anthonator/Downloads/indymade-badge-horizontal.png",#<Parts::EpiloguePart:0x007fd9e5903ac8 @part="-------------RubyMultipartPost--rnrn",:request_headers=>{"User-Agent"=>"Faraday v0.8.7","Content-Type"=>"multipart/form-data;boundary=-----------RubyMultipartPost","Content-Length"=>"8062"},:boundary=>"-----------RubyMultipartPost"},@on_complete_callbacks=[]>"

正在将正文设置为CompositeReadIO对象,它似乎永远不会发送请求.

解决方法

事实证明,我需要指定一个适配器.这是最终工作的代码.

conn = Faraday.new('http://myapi') do |f|
  f.request :multipart
  f.request :url_encoded
  f.adapter :net_http # This is what ended up making it work
end

payload = { :file => Faraday::UploadIO.new('...',payload)

（编辑：李大同）

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