code: public static Date convertDate(JsonNode node, String dateTimeFormat) {
          if (node instanceof POJONode) {
              return convertDate(DPathUtils.extractValue((POJONode) node), dateTimeFormat);
          }
          return node.isNumber() ? new Date(node.asLong())
                  : node.isTextual() ? DateFormatUtils.fromString(node.asText(), dateTimeFormat)
                          : null;
      }
docs: Convert a {@link JsonNode} to {@link Date}. If the target node is a string, parse it as a
  {@link Date} using the specified date-time format.
  
  @param node
  @return
  @since 0.6.3.1