Soap with Ruby gem Savon

gps_reader.rb

def fetch_gps
  $client ||= Savon.client("http://...ip.../GPSInfo/Service.asmx?WSDL")
  data_hash, data_qty = {}, 0

  @equipments.each do |equ_no|
    begin
      response = $client.request "getGPSInfoByID" do
        $client.http.headers["Content-Type"] = "text/xml; charset=utf-8"
        $client.http.headers["SOAPAction"] = "http://tempuri.org/getGPSInfoByID"
        soap.body = {:id => equ_no}
      end
      gps_data = response.body[:get_gps_info_by_id_response][:get_gps_info_by_id_result][:diffgram][:new_data_set]
      if gps_data
        gps_data = gps_data[:ds]
        one_data = gps_data[:update_time].strftime("%d%m%y,%H%M%S.%L").to_s
        if @gps_time[equ_no] != one_data
          @gps_time[equ_no] = one_data.dup
          one_data << ","+(gps_data[:latitude]).to_s+",N,"+(gps_data[:longitude]).to_s+",E,"+gps_data[:speed].to_s+","+(gps_data[:direction]).to_s+";"
          data_hash[@vehicles_hash[gps_data[:device_id]]] = one_data
          data_qty += 1
        end
      end
    rescue => e
      logger.error "抓取数据异常（设备号#{equ_no}）:#{e.message}"
      next
    end
  end
  data_hash["count"] = data_qty
  data_hash["page"] = 1

  data_hash
end