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update:demo12

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dichgrem
2026-01-16 16:19:52 +08:00
parent 1bbfe0e546
commit a7334f14dc
6 changed files with 84 additions and 0 deletions
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14
com/study/demo12/TestVerifyCodeLogic.java Normal file
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package com.study.demo12;
public class TestVerifyCodeLogic {
public static void main(String[] args) {
String timestamp = String.valueOf(System.currentTimeMillis());
String last4Digits = timestamp.substring(timestamp.length() - 4);
String code = "CODE" + last4Digits;
System.out.println("完整时间戳: " + timestamp);
System.out.println("时间戳后4位: " + last4Digits);
System.out.println("生成的验证码: " + code);
System.out.println("验证码格式正确: " + (code.startsWith("CODE") && code.length() == 8));
}
}