Java实现随机生成手机短信验证码的简单代码

Java|java教程

Java,随机,短信验证码

Java-java教程

/*** 创建指定数量的随机字符串* @param numberFlag 是否是数字* @param length* @return*/public static String createRandom(boolean numberFlag, int length){ String retStr = ""; String strTable = numberFlag ? "1234567890" : "1234567890abcdefghijkmnpqrstuvwxyz"; int len = strTable.length(); boolean bDone = true; do { retStr = ""; int count = 0; for (int i = 0; i < length; i++) { double dblR = Math.random() * len; int intR = (int) Math.floor(dblR); char c = strTable.charAt(intR); if (( <= c) && (c = 2) { bDone = false; } } while (bDone); return retStr;}

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