From: Robert Klemme <bob.news@...>
Date: 2005-04-06T00:14:47+09:00
Subject: Re: [howto] pass a byte array to a web service


<aastanti@hotmail.com> schrieb im Newsbeitrag
news:1112713106.994329.50970@f14g2000cwb.googlegroups.com...
> Hello all,
>
> I have a web service developed in java with axis and I'd like to invoke
> it by means of SOAP4R. The problem is that I don't know how to pass an
> array of bytes, without starting from the WSDL. I tried with
> String#pack, an array with numbers or chars (ie: [121] or ['a'] or
> [65.chr]), but they all fail.
>
> On customer side I always get:
> SOAP::FaultError: java.lang.IllegalArgumentException: argument type
> mismatch
>         from #<SOAP::Mapping::Object:0x2bc5468>
>
> Please consider that the argument is defined in wsdl as:
> <wsdl:part name="x" type="xsd:base64Binary"/>
> ("x" is obviously a fake name)

Withoug knowing web services inside out: The line above seems to indicate
that you have to send the bytes base64 encoded.

>> require 'base64'
=> true
>> Base64.encode64 "\001\002\003"
=> "AQID\n"
>> Base64.encode64 "\001"
=> "AQ==\n"

Kind regards

    robert


> I tried simply with String as well, but I get:
> SOAP::FaultError: org.xml.sax.SAXException: Bad types (class
> java.lang.String ->
>  class [B)
>         from #<SOAP::Mapping::Object:0x2cec320>
>
> We tried calling the web service in the following way:
> require 'soap/rpc/driver'
> s =
> SOAP::RPC::Driver.new('http://localhost:8080/fake/services/BigFake',
> 'http://www.fake.com/fake')
> s.add_method_with_soapaction("fakeMethod",
> 'http://localhost:8080/fake/services/BigFake/fakeMethod', ['in', 'x'])
> x = ['a']
> p s.fakeMethod(x)
>
> Of course in reality we are calling a more complex method, with 8 input
> parameters, 1 output parameter and a return value, but we have problem
> only with the byte[] one.
>
> The equivalent java version (the one that works) is a lot more complex,
> hence it is not useful to post it here, but consider that the parameter
> is passed to an axis call client as a native byte[].
>
> We have tried to invoke the web service starting from the WSDL, and
> surprisingly it works passing a String, which is not so understandable
> to me:
> require 'soap/wsdlDriver'
> WSDL_URL = "http://localhost:8080/fake/services/BigFake?wsdl"
> s = SOAP::WSDLDriverFactory.new(WSDL_URL).createDriver
> x = "abc"
> p s.fakeMethod(x)
>
> Why the latter works, but the former, even passing a String, doesn't
> work? Can anybody shed some light on this?
>
> TIA
>