From 825b010843768f724908715b28e13810470bab5e Mon Sep 17 00:00:00 2001
From: BrandWang <rj090123@163.com>
Date: Thu, 25 May 2023 15:14:08 +0800
Subject: [PATCH] =?UTF-8?q?feat(=E5=8F=AF=E5=9B=9E=E6=BA=AF):=20appKey?=
 =?UTF-8?q?=E7=94=9F=E6=88=90?=
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修改appKey生成方式
---
 .../recall/util/ShortAppKeyGenerator.java     | 30 +++++++++++--------
 1 file changed, 18 insertions(+), 12 deletions(-)

diff --git a/afis-recall-web/src/main/java/com/wabestway/recall/util/ShortAppKeyGenerator.java b/afis-recall-web/src/main/java/com/wabestway/recall/util/ShortAppKeyGenerator.java
index bde7ba2..2510f08 100644
--- a/afis-recall-web/src/main/java/com/wabestway/recall/util/ShortAppKeyGenerator.java
+++ b/afis-recall-web/src/main/java/com/wabestway/recall/util/ShortAppKeyGenerator.java
@@ -1,19 +1,24 @@
 package com.wabestway.recall.util;
 
+
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+import java.security.SecureRandom;
+import java.util.Arrays;
 import java.util.UUID;
 
 public class ShortAppKeyGenerator {
     private static final char[] BASE62_CHARS = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz".toCharArray();
 
     public static String generate() {
-        UUID uuid = UUID.randomUUID();
-        long mostSigBits = uuid.getMostSignificantBits();
-        long leastSigBits = uuid.getLeastSignificantBits();
-        byte[] bytes = new byte[16];
-        for (int i = 0; i < 8; i++) {
-            bytes[i] = (byte) (mostSigBits >>> (8 * (7 - i)));
-            bytes[i + 8] = (byte) (leastSigBits >>> (8 * (7 - i)));
+        String input = System.currentTimeMillis() + "";
+        MessageDigest md = null;
+        try {
+            md = MessageDigest.getInstance("MD5");
+        } catch (NoSuchAlgorithmException e) {
+            throw new RuntimeException(e);
         }
+        byte[] bytes = md.digest(input.getBytes());
         return toBase62(bytes);
     }
 
@@ -32,12 +37,13 @@ public class ShortAppKeyGenerator {
         long result = 0;
         for (int i = 0; i < 8; i++) {
             result <<= 8;
-            result |= (bytes[i] & 0xFF);
-        }
-        for (int i = 8; i < 16; i++) {
-            result <<= 8;
-            result |= (bytes[i] & 0xFF);
+            result |= ((long) (bytes[i] & 0xFF));
         }
         return result;
     }
+
+    public static void main(String[] args) {
+        String appKey = generate();
+        System.out.println(appKey); // 输出：pT8bnL3ZTYqdBlUo
+    }
 }