利用Math.random()生成字符串随机码
1 /** 2 * 生成字符串随机码 3 * <p>Title: getRandomString</p> 4 * <p>Description: </p> 5 * @param length 6 * @return 7 */ 8 public static String getRandomString(int length){ 9 String str="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; 10 Random random=new Random(); 11 StringBuffer sb=new StringBuffer(); 12 for(int i=0;i<length;i++){ 13 int number=random.nextInt(62); 14 sb.append(str.charAt(number)); 15 } 16 return sb.toString(); 17 }