Question

如何生成长度固定但内容随机的字符串 用Java语言描述 求解

Answer 1

至于字符集需要你自己定义，我这里随便写了点字符
public static String getRandomString(int length) { //length表示生成字符串的长度
String base = "abcdefghijklmnopqrstuvwxyz0123456789";
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();
}