生成动态长度的随机密码

package com.book.util;import org.apache.commons.lang.RandomStringUtils;/** * @see RandomPwd随机生成密码 * @version 1.0 * */public class RandomPwd{public static String random() {        String str = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijkmnpqrstuvwxyz";//初始化种子        return RandomStringUtils.random(9, str);//返回9为的字符串    }public static void main(String[] args){System.out.println(random());}}