I'm trying to post multipart content (a file and some strings) to a
Sinatra server on localhost using a java client. It seems the server
doesn't like the POST message. The stack trace is:
************************************************************************************
ERROR NoMethodError: undefined method `rewind' for "hi":String
D:/Ruby192/lib/ruby/gems/1.9.1/gems/rack-1.2.3/lib/rack/
utils.rb:581:in`block in parse_multipart'
D:/Ruby192/lib/ruby/gems/1.9.1/gems/rack-1.2.3/lib/rack/
utils.rb:499:in`loop'
D:/Ruby192/lib/ruby/gems/1.9.1/gems/rack-1.2.3/lib/rack/
utils.rb:499:in`parse_multipart'
D:/Ruby192/lib/ruby/gems/1.9.1/gems/rack-1.2.3/lib/rack/
request.rb:270:in `parse_multipart'
D:/Ruby192/lib/ruby/gems/1.9.1/gems/rack-1.2.3/lib/rack/
request.rb:148:in `POST'
D:/Ruby192/lib/ruby/gems/1.9.1/gems/rack-1.2.3/lib/rack/
methodoverride.rb:15:in `call'
D:/Ruby192/lib/ruby/gems/1.9.1/gems/sinatra-1.2.6/lib/sinatra/
base.rb:1272:in `block in call'
D:/Ruby192/lib/ruby/gems/1.9.1/gems/sinatra-1.2.6/lib/sinatra/
base.rb:1303:in `synchronize'
D:/Ruby192/lib/ruby/gems/1.9.1/gems/sinatra-1.2.6/lib/sinatra/
base.rb:1272:in `call'
D:/Ruby192/lib/ruby/gems/1.9.1/gems/rack-1.2.3/lib/rack/
content_length.rb:13:in `call'
D:/Ruby192/lib/ruby/gems/1.9.1/gems/rack-1.2.3/lib/rack/
handler/webrick.rb:52:in `service'
D:/Ruby192/lib/ruby/1.9.1/webrick/httpserver.rb:111:in
`service'
D:/Ruby192/lib/ruby/1.9.1/webrick/httpserver.rb:70:in `run'
D:/Ruby192/lib/ruby/1.9.1/webrick/server.rb:183:in `block in
start_thread'
************************************************************************************
My server prints out the params in the post message. Here's what they
are for my java client:
************************************************************************************
Content-Disposition: form-data; name="file"; filename="fff.jpg"
Content-Type: image/jpeg
Content-Transfer-Encoding: binary
#<File:0xedbc10>
Content-Disposition: form-data; name="jjj"
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
hi
************************************************************************************
The java code I'm using is:
************************************************************************************
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://localhost:4567/upload";);
File file = new File("D:/My Documents/My Desktop/fff.jpg");
MultipartEntity mpEntity = new MultipartEntity();
ContentBody cbFile = new FileBody(file, "image/jpeg");
mpEntity.addPart("file", cbFile);
ContentBody stringBody = new StringBody("hi",
Charset.forName("UTF8"));
mpEntity.addPart("jjj", stringBody);
httppost.setEntity(mpEntity);
HttpResponse response = httpclient.execute(httppost);
************************************************************************************
So it seems Rack doesn't like dealing with content type when the
content type is a string. When I set the content_type variable inside
rack/utils.rb to nil when the param is not a file everything works
fine. Is this intentional or should it be submitted as a bug?
See also http://blogs.oracle.com/mandy/entry/rack_and_content_type_for.
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