How to use

decodeComponent

method

in

org.jboss.netty.handler.codec.http.QueryStringDecoder

/**
 * Decodes a bit of an URL encoded by a browser.
 * <p>
 * This is equivalent to calling {@link #decodeComponent(String, Charset)}
 * with the UTF-8 charset (recommended to comply with RFC 3986, Section 2).
 * @param s The string to decode (can be empty).
 * @return The decoded string, or {@code s} if there's nothing to decode.
 * If the string to decode is {@code null}, returns an empty string.
 * @throws IllegalArgumentException if the string contains a malformed
 * escape sequence.
 */
public static String decodeComponent(final String s) {
  return decodeComponent(s, HttpConstants.DEFAULT_CHARSET);
}

if (c == '=' && name == null) {
  if (pos != i) {
    name = decodeComponent(s.substring(pos, i), charset);
    if (!addParam(params, decodeComponent(s.substring(pos, i), charset), "")) {
      return;
    if (!addParam(params, name, decodeComponent(s.substring(pos, i), charset))) {
      return;
  addParam(params, decodeComponent(s.substring(pos, i), charset), "");
} else {                // Yes and this must be the last value.
  addParam(params, name, decodeComponent(s.substring(pos, i), charset));