
java代码
1、获取指定长度的随机数
public static String getRandomString(int length) { // length表示生成字符串的长度
String base = "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";// 还可以添加上大写和特殊符号
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();
}
2、获取指定范围内的数字随机数
public static int getRandomNum(int min,int max) {
return new Random().nextInt(max - min + 1) + min;
}