public void init(FilterConfig filterConfig) throws ServletException {

    this.filterConfig = filterConfig;
    this.encoding = filterConfig.getInitParameter("encoding");
    String value = filterConfig.getInitParameter("ignore");
    if (value == null) {
      this.ignore = true;
    } else if (value.equalsIgnoreCase("true")) {
      this.ignore = true;
    } else if (value.equalsIgnoreCase("yes")) {
      this.ignore = true;
    } else {
      this.ignore = false;
    }

  }