工具类-获取一定长度的随机字符串

/** * 获取一定长度的随机字符串 * @param length 指定字符串长度 * @return 一定长度的字符串 */public static String getRandomStringByLength(int length) {String base = "abcdefghijklmnopqrstuvwxyz0123456789";Random random = new Random();StringBuffer sb = new StringBuffer();for (int i = 0; i < length; i++) {int number = random.nextInt(base.length());sb.append(base.charAt(number));}return sb.toString();}