update

index3.js

@@ -23,6 +23,7 @@ app.get('/wechat',  (req, res) => {
   sha1 === signature ? res.send(echostr) : res.status(403).send(' 验证失败');
 });
 
+const msgIdCache = new Set();
 // 消息处理流程 
 app.post('/wechat', async (req, res) => {
   // try {
@@ -30,6 +31,12 @@ app.post('/wechat',  async (req, res) => {
   const result = await xml2js.parseStringPromise(req.body);
   const message = result.xml.Content[0];
   const fromUser = result.xml.FromUserName[0];
+  const MsgId = result.xml.MsgId[0];
+
+  if (msgIdCache.has(MsgId)) {
+    return res.send('');  // 拦截重复请求 
+  }
+  msgIdCache.add(MsgId);
   console.log(message, "------------------")
   // API调用 [5]()
   const completion = await openai.chat.completions.create({
@@ -65,7 +72,7 @@ app.post('/wechat',  async (req, res) => {
       <xml>
         <ToUserName><![CDATA[${fromUser}]]></ToUserName>
         <FromUserName><![CDATA[${result.xml.ToUserName[0]}]]></FromUserName> 
-        <CreateTime>${Math.floor(Date.now()/1000)}</CreateTime> 
+        <CreateTime>${Math.floor(Date.now() / 1000)}</CreateTime> 
         <MsgType><![CDATA[text]]></MsgType>
         <Content><![CDATA[${fullContent}]]></Content> 
       </xml>