first commit

app/common/middleware/AppLang.php

@@ -0,0 +1,15 @@
+<?php
+namespace app\common\middleware;
+
+use Webman\MiddlewareInterface;
+use Webman\Http\Response;
+use Webman\Http\Request;
+
+class AppLang implements MiddlewareInterface
+{
+    public function process(Request $request, callable $handler) : Response
+    {
+        locale(session('lang', 'zh_CN'));
+        return $handler($request);
+    }
+}