fix: 修复微信分享不起作用的问题

server/controller/WxMonitor.js

@@ -38,8 +38,8 @@ function getsignature (req, res) {
         share_json.jsapi_ticket = JSON.parse(body).ticket
         share_json.noncestr = Math.random().toString(36).substr(2, 15) // 随机字符串
         share_json.timestamp = parseInt(new Date().getTime() / 1000) + '' // 事件戳
-
-        let str1 = 'jsapi_ticket=' + share_json.jsapi_ticket + '&noncestr=' + share_json.noncestr + '&timestamp=' + share_json.timestamp + '&url=' + req.headers.referer
+        const pageUrl = req.body.url || req.headers.referer
+        let str1 = 'jsapi_ticket=' + share_json.jsapi_ticket + '&noncestr=' + share_json.noncestr + '&timestamp=' + share_json.timestamp + '&url=' + pageUrl
         let token = sha1(str1)
         return err ? reject(err) : res.send({
           token: token, // 上一步获取的 ticket