初始化

app/middleware/Lang.php

@@ -0,0 +1,17 @@
+<?php
+namespace app\middleware;
+
+use Illuminate\Support\Str;
+use Webman\Http\Request;
+use Webman\Http\Response;
+use Webman\MiddlewareInterface;
+
+class Lang implements MiddlewareInterface
+{
+    public function process(Request $request, callable $handler): Response
+    {
+        $lang = $request->header('Lang') ?? 'zh_CN';
+        locale(session('lang', Str::replace('-', '_', $lang)));
+        return $handler($request);
+    }
+}