🎉 wechat server verification part completed

routes.js

@@ -0,0 +1,23 @@
+const express = require("express");
+const router = express.Router();
+const crypto = require("crypto");
+
+router.get("/", (req, res, next) => {
+  res.send("OK");
+});
+
+router.get("/verify", (req, res, next) => {
+  // 验证消息来自微信服务器：https://developers.weixin.qq.com/doc/offiaccount/Basic_Information/Access_Overview.html
+  const { signature, timestamp, nonce, echostr } = req.body;
+  const token = process.env.TOKEN;
+  let tmp_array = [token, timestamp, nonce].sort();
+  let tmp_string = tmp_array.join("");
+  tmp_string = crypto.createHash("sha1").update(tmp_string).digest("hex");
+  if (tmp_string === signature) {
+    res.send(echostr);
+  } else {
+    res.send("verification failed");
+  }
+});
+
+module.exports = router;