使用Ruby Savon客户端连接到PHP NuSOAP服务器

Question

I'm trying to connect to a remote SOAP service, which has been set up with the PHP NuSoap library. I'm connecting using a Ruby Savon client.

Visiting the service's WDSL address ( http://example.com/api/webservice.php?wdsl ) gives the following information about the end point I'm trying to use:

   Name: addsubscription
   Binding: webserviceBinding
   Endpoint: http://www.example.com/api/webservice.php
   SoapAction: http://www.example.com/api/webservice.php/addsubscription
   Style: rpc
   Input:
     use: encoded
     namespace:
     encodingStyle: http://schemas.xmlsoap.org/soap/encoding/
     message: addsubscriptionRequest
     parts:
   Output:
     use: encoded
     namespace:
     encodingStyle: http://schemas.xmlsoap.org/soap/encoding/
     message: addsubscriptionResponse
     parts:
   Namespace:
   Transport: http://schemas.xmlsoap.org/soap/http
   Documentation:

Setting up my Savon client like so:

client = Savon::Client.new(wsdl: "http://www.example.com/api/webservice.php?wdsl")

and then trying to call the 'add subscription' method:

response = client.call(:addsubscription) do
  message my_hash_of_stuff
end

gives the following error in the logs -

Savon::UnknownOperationError: Unable to find SOAP operation: :addsubscription
Operations provided by your service: []

Setting up the client like so:

client = Savon.client do
  endpoint "http://www.example.com/api/webservice.php"
  namespace ''
end

and then running the same call as above raises a Savon::SOAPFault error, which I'm assuming would be due to the lack of a namespace attribute (I'm not sure how to further debug/glean information from this error)?

Based on the information above, how should I configure the Savon client to connect to this service?

Edit:

Setting up the client like so -

client = Savon.client(namespace: '', endpoint: 'http://www.example.com/api/webservice.php')

and then calling (with a populated message_hash var)

response = client.call(:addsubscription,
                     message: message_hash)

spits out the following error:

Savon::SOAPFault: /app/vendor/bundle/ruby/2.2.0/gems/nori-2.6.0/lib/nori.rb:72:in `find_value': undefined method `each' for nil:NilClass (NoMethodError)
from /app/vendor/bundle/ruby/2.2.0/gems/nori-2.6.0/lib/nori.rb:38:in `find'
from /app/vendor/bundle/ruby/2.2.0/gems/savon-2.11.1/lib/savon/soap_fault.rb:24:in `to_s'
from /app/vendor/ruby-2.2.3/lib/ruby/2.2.0/irb.rb:498:in `write'
from /app/vendor/ruby-2.2.3/lib/ruby/2.2.0/irb.rb:498:in `print'
from /app/vendor/ruby-2.2.3/lib/ruby/2.2.0/irb.rb:498:in `block (2 levels) in eval_input'
from /app/vendor/ruby-2.2.3/lib/ruby/2.2.0/irb.rb:623:in `signal_status'
from /app/vendor/ruby-2.2.3/lib/ruby/2.2.0/irb.rb:486:in `block in eval_input'
from /app/vendor/ruby-2.2.3/lib/ruby/2.2.0/irb/ruby-lex.rb:245:in `block (2 levels) in each_top_level_statement'
from /app/vendor/ruby-2.2.3/lib/ruby/2.2.0/irb/ruby-lex.rb:231:in `loop'
from /app/vendor/ruby-2.2.3/lib/ruby/2.2.0/irb/ruby-lex.rb:231:in `block in each_top_level_statement'
from /app/vendor/ruby-2.2.3/lib/ruby/2.2.0/irb/ruby-lex.rb:230:in `catch'
from /app/vendor/ruby-2.2.3/lib/ruby/2.2.0/irb/ruby-lex.rb:230:in `each_top_level_statement'
from /app/vendor/ruby-2.2.3/lib/ruby/2.2.0/irb.rb:485:in `eval_input'
from /app/vendor/ruby-2.2.3/lib/ruby/2.2.0/irb.rb:395:in `block in start'
from /app/vendor/ruby-2.2.3/lib/ruby/2.2.0/irb.rb:394:in `catch'
from /app/vendor/ruby-2.2.3/lib/ruby/2.2.0/irb.rb:394:in `start'
from /app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.4/lib/rails/commands/console.rb:110:in `start'
from /app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.4/lib/rails/commands/console.rb:9:in `start'
from /app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:68:in `console'
from /app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
from /app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.4/lib/rails/commands.rb:17:in `<top (required)>'
from /app/bin/rails:4:in `require'
from /app/bin/rails:4:in `<main>'

Answer 1

It looks like you're on an outdated Savon version < 2.x. I recommend to upgrade to version 2.x (2.11.1 as I'm writing). The interface changed considerably with the introduction of v2.

A minimal implementation could look like this:

require 'savon'

WSDL = 'http://www.example.com/api/webservice.php?wdsl'

client = Savon.client(wsdl: WSDL,
                      log: true,
                      log_level: :debug,
                      pretty_print_xml: true)
response = client.call(:addsubscription,
                        message: my_hash_of_stuff)
print response.to_hash