* governing permissions and limitations under the License.
 */
package org.codelibs.fess.helper;

import java.security.SecureRandom;
import java.util.Random;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.lang3.RandomStringUtils;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.exception.InvalidAccessTokenException;