小程序消息推送token

yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/service/weixin/TokenValidatorService.java

@@ -0,0 +1,38 @@
+package cn.iocoder.yudao.module.system.service.weixin;
+
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+import java.util.Arrays;
+public class TokenValidatorService {
+    public static boolean validateToken(String token, String signature, String timestamp, String nonce) {
+        String[] arr = new String[]{token, timestamp, nonce};
+        // 对 token、timestamp 和 nonce 按字典序排序
+        Arrays.sort(arr);
+        StringBuilder content = new StringBuilder();
+        for (String s : arr) {
+            content.append(s);
+        }
+        String tempStr = sha1Encode(content.toString());
+        // 将加密后的字符串与 signature 进行对比
+        return tempStr!= null && tempStr.equals(signature);
+    }
+    private static String sha1Encode(String str) {
+        try {
+            MessageDigest digest = MessageDigest.getInstance("SHA-1");
+            digest.update(str.getBytes());
+            byte[] bytes = digest.digest();
+            StringBuilder hexStr = new StringBuilder();
+            for (byte b : bytes) {
+                String hex = Integer.toHexString(0xFF & b);
+                if (hex.length() == 1) {
+                    hexStr.append('0');
+                }
+                hexStr.append(hex);
+            }
+            return hexStr.toString();
+        } catch (NoSuchAlgorithmException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+}