添加缺少的中间件

app/Http/Middleware/UniqueMiddleware.php

+<?php
+
+namespace App\Http\Middleware;
+
+use Closure;
+//use App\Model\TokenModel;
+
+class UniqueMiddleware
+{
+    /**
+     * Handle an incoming request.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @param  \Closure  $next
+     * @return mixed
+     */
+    public function handle($request, Closure $next)
+    {
+        //设置唯一追踪值
+        $request->offsetSet('unique', getUnique(true));
+        return $next($request);
+    }
+}