fix

routes/index.js

@@ -38,12 +38,14 @@ router.post('/set-lang', (req, res) => {
 router.get('/', (req, res, next) => {
   let locale = utils.lang.getLocale(req.acceptsLanguages());
   let lang = utils.lang.ensureLanguage(locale);
+  console.log(`lang=${lang}, req.cookies.lang=${req.cookies.lang}`);
   // 如果cookies中带有lang，就用cookies的，cookies没有则设置cookies
   if (req.cookies.lang) {
     lang = utils.lang.ensureLanguage(req.cookies.lang);
   }
   if (!req.cookies.lang || req.cookies.lang != lang) {
     res.cookie('lang', lang, config.cookie);
+    console.log(`set cookie: lang=${lang}`);
   }
   return res.redirect(`/${lang}`);
 });