Perl

JSON: Nested Objects

See more JSON Examples

Here we have a JSON object that contains nested JSON objects. This example demonstrates how to access the contents of the nested objects.

{
  "name": "donut",
  "image":
    {
    "fname": "donut.jpg",
    "w": 200,
    "h": 200
    },
  "thumbnail":
    {
    "fname": "donutThumb.jpg",
    "w": 32,
    "h": 32
    }
}

Chilkat2 Perl

use strict;
use warnings;
use Chilkat2;

my $json = Chilkat2::JsonObject->new;

# This is the above JSON with whitespace chars removed (SPACE, TAB, CR, and LF chars).
# The presence of whitespace chars for pretty-printing makes no difference to the Load
# method.
my $jsonStr = '{"name": "donut","image":{"fname": "donut.jpg","w": 200,"h": 200},"thumbnail":{"fname": "donutThumb.jpg","w": 32,"h": 32}}';

my $success = $json->Load($jsonStr);
if (!$success) {
    print $json->LastErrorText, "\n";
    exit;
}

# Get the "image" object.
my $imageObj = Chilkat2::JsonObject->new;
$json->ObjectOf2('image', $imageObj);

print 'image: fname=', $imageObj->StringOf('fname'), ', width=', $imageObj->IntOf('w'), ', height=', $imageObj->IntOf('h'), "\n";

# Get the "thumbnail" object.
my $thumbObj = Chilkat2::JsonObject->new;
$json->ObjectOf2('thumbnail', $thumbObj);

print 'thumbnail: fname=', $thumbObj->StringOf('fname'), ', width=', $thumbObj->IntOf('w'), ', height=', $thumbObj->IntOf('h'), "\n";