How to get the 2-D Array data in perl script?

Question

We have a client code which is written in perl, and it is trying to connect to a WebService to make an API call.

This API call is written in java, and it returns a 2-Dimemsion String Array.
Here is the code on Client side:

    eval {
            $service = SOAP::Lite->service("some WS link here");
    };
    if ($exception = $@) {
            print("Failed to connect to WS: $exception");
            return 0;
    }

    my $status;
    eval {
            $status = $service->getStatus();
    };
    if ($exception = $@) {
            print("$exception");
            return 0;
    }

My question is how to extract the actual data from this "$status" value. When I was to print this "$status" value, I can only see this:

     DB> p $status
     stringArrayArray=HASH(0x126e2ac0)
     DB>

Sobrique · Accepted Answer · 2015-12-21 22:35:15Z

1

That means your modules has returned a hash reference. You can see what's in it with e.g. Data::Dumper

Or:

foreach my $key ( keys %$status ) { 
   print "$key => ", $status -> {$key}, "\n"; 
}

See: perlref

answered Dec 21, 2015 at 22:35

Sobrique

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4 Comments

user3595231 Over a year ago

Thanks for the tips. But if I was using Data::Dumper, this is what I get: $VAR1 = bless( { 'item' => { 'item' => undef } }, 'stringArrayArray' ); which totally lost me.

Sobrique Over a year ago

Your api is returning junk then. That's the root of your problem - you have a nested hash that you could access as: $service -> {item} -> {item} but it is undefined.

user3595231 Over a year ago

Thanks for the help. There is a tiny issue on the web-service side. And after I had it fixed, here is full set of data from dumper, "$VAR1 = { 'item' => { 'item' => '0' } }; ". But there is still no actual data in the package. I guess my question is can client ( in perl ) really gets the full set of response from ws ?

Sobrique Over a year ago

Yes, of course. You don't have to use soap lite, you can manually process the response with LWP and a parser. This should at least give a hint.

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