生成随机码代码:
/** * 生成随机码 * @param codeString 文本范围 如:0123456789ABC... * @param codeLength 生成长度 * @return */ private String getRandomCode(String codeString, int codeLength) { Random random1 = new Random(); //指定字符串长度,拼接字符并toString StringBuffer sb = new StringBuffer(); for (int i = 0; i < codeLength; i++) { int number = random1.nextInt(codeString.length()); char charAt = codeString.charAt(number); sb.append(charAt); } return sb.toString(); }