How to use

hasKeyIgnoreCase

method

in

org.jsoup.nodes.Attributes

/**
 * Test if this element has an attribute. <b>Case insensitive</b>
 * @param attributeKey The attribute key to check.
 * @return true if the attribute exists, false if not.
 */
public boolean hasAttr(String attributeKey) {
  Validate.notNull(attributeKey);
  if (attributeKey.startsWith("abs:")) {
    String key = attributeKey.substring("abs:".length());
    if (attributes().hasKeyIgnoreCase(key) && !absUrl(key).equals(""))
      return true;
  }
  return attributes().hasKeyIgnoreCase(attributeKey);
}

Attributes expect = getEnforcedAttributes(tagName);
String attrKey = attr.getKey();
if (expect.hasKeyIgnoreCase(attrKey)) {
  return expect.getIgnoreCase(attrKey).equals(attr.getValue());