SbXMLBuilder.rb

arr =[
	{
		'merchant_id' => '3000',
		'service_id' => '1234',
		'dtls' => [
			{
				'dtl1' => [
					{
						'dtl_rowno' => '1',
						'dtl_item_id' => '345',
						'dtl_tax' => '0.05'
					}
​
				],
				'dtl2' => [
					{
						'dtl_rowno' => '1',
						'dtl_item_id' => '345',
						'dtl_tax' => '0.05'
					}
​
				],
				'dtl3' => [
					{
						'dtl_rowno' => '1',
						'dtl_item_id' => '345',
						'dtl_tax' => '0.05'
					}
​
				],
				'dtl4' => [
					{
						'dtl_rowno' => '1',
						'dtl_item_id' => '345',
						'dtl_tax' => '0.05'
					}
​
				]
			}
		]
	}	
]
​
def makeXml(val, xml)
	val.each do |hashdata|	
			hashdata.each do |k, v|
				unless v.class == Array
					xml.send(k, v)
				else
					xml.send(k) do
						makeXml(v, xml)
					end
				end
			end
		end	
end
​
​
​
​
b = Nokogiri::XML::Builder.new(encoding: 'Shift_JIS') do |xml|
	xml.send(:'sps-api-request', id: "MG02-00131-101") {
		makeXml(arr, xml)
	}
end
​
puts b.to_xml