Max_Kooler has asked for the wisdom of the Perl Monks concerning the following question:

Dear Monks,

I'm writing a little Web Service in Perl, and I'm using Pod::WSDL to achieve it. All appears to be right when I call it from the browser, it shows the WSDL code and it seems to be fine. But now I'm using the Web Services Explorer from Eclipse to call it and it looks perfect until I try to use a method, in any case I get:

IWAB0135E An unexpected error has occurred.
301
Moved Permanently

This is the code of my Web Service: 
WebserviceFunctions.pm

package WebserviceFunctions;

=begin WSDL
_DOC Hello return a String saying hello
_IN name $string the name of the user to salute
_RETURN $string Returns a string Hello, name
=end WSDL


sub Hello {
    my $name = shift;
    my $return = "Hello, $name";
    return $return;
}

=begin WSDL
_DOC Goodbye return a String saying goodbye
_IN name $string the name of the user to dismiss
_RETURN $string Returns a string Goodbye, name
=end WSDL

sub Goodbye {
    my $name = shift;
    my $return = "Goodbye, $name";
    return $return;
}

1;


webservice.cgi

#!/usr/bin/perl -w

use Pod::WSDL;
use CGI;
use strict;
use warnings;

print CGI->header('text/xml');

my $pod = new Pod::WSDL(source=> './WebserviceFunctions.pm',
                        location=>'http://192.168.11.73/cgi-bin/webser
+vice',
                        pretty=>1,
                        withDocumentation=>1);

$pod->addNamespace('http://192.168.11.73/cgi-bin/webservice/','Webserv
+iceFunctions');

print $pod->WSDL;

[download]
To call the webservice I point to http://192.168.11.73/cgi-bin/webservice/webservice.cgi.
I hope you can help me to find out why I get this 301 error, Thank You!

Replies are listed 'Best First'.
Re: Using Pod::WSDL and getting error 301 when calling any method
by InfiniteSilence (Curate) on May 03, 2013 at 21:40 UTC

    I was going to finalize my response with an example that actually read from the WSDL file and called the service but there is apparently a problem with SOAP::Lite just working with the WSDL file (as described here) and I don't have another SOAP client handy. Since you are not going to use a SOAP::Lite-based client anyway though that should not affect you.

    As others have anonymously responded, it is true, the Pod::WSDL just creates the WSDL file. It kind of says this in the pod, "Pod::WSDL will output the WSDL document. That's it." You know, you don't really need a WSDL file to have a webservice written in Perl (as shown below). If you insist on using the WSDL you'll have to change it to describe something else that will actually respond to the incoming SOAP packet with your WebServiceFunctions methods. Here's a crude example calling a webservice written in Perl that uses your WebServiceFunctions class: 

    use SOAP::Lite +trace=>'all'; #removing tracing later

my $soap_resp = SOAP::Lite->uri('http://localhost/WebServiceFunctions'
+)->proxy('http://localhost/cgi-bin/soap-cooltest.pl')->Hello('world')
+;

print $soap_resp->result;

if ($soap_resp->fault){print $soap_resp->faultstring}

    [download]
    Here's the web service that loads your class and will fire off its methods when requested: 
    #!/usr/bin/perl -w                                                    
+        
use strict;
use WebServiceFunctions;

print "Content-type: application/soap\n";
     use SOAP::Transport::HTTP;
     SOAP::Transport::HTTP::CGI->dispatch_to('WebServiceFunctions')->h
+andle;

1;

    [download]

    I renamed the class to WebServiceFunctions and I added '=cut' after the '=end WSDL' pod tags as SOAP::Transport::HTTP doesn't like it.

    Celebrate Intellectual Diversity

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Re: Using Pod::WSDL and getting error 301 when calling any method
by Anonymous Monk on May 03, 2013 at 19:26 UTC

    ... until I try to use a method ...

    What makes you think Pod::WSDL is used for calling methods web services?

[reply]
      I used the Web Services Explorer from Eclipse to call the method, in this case if I call either Hello or Goodbye Eclipse will throw the 301 error.
[reply]

        I used the Web Services Explorer from Eclipse to call the method, in this case if I call either Hello or Goodbye Eclipse will throw the 301 error.

        What method? What webservice?

        webservice.cgi is not a webservice, you can't call methods an it

        you can name it surely-you-cant-be-serious.cgi but it won't respond with "I am serious. And don't call me Shirley"

        Let me rephrase. webservice.cgi is not server, it provides no methods for you to call, it prints some xml, and that's it -- it always does this, it never does anything different

        Also, WebserviceFunctions.pm contains no code, it is 100% pod

        So, whether you use Eclipse or whatever, there is no server for you to call Hello or Goodbye on, it doesn't exist

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