跨域问题

app/Http/Kernel.php

@@ -32,6 +32,7 @@ class Kernel extends HttpKernel
 
         'api' => [
             \App\Http\Middleware\JsonpCallback::class,
+            \App\Http\Middleware\CrossHttp::class,
         ],
     ];
 

app/Http/Middleware/CrossHttp.php

+<?php
+namespace App\Http\Middleware;
+use Closure;
+class CrossHttp
+{
+    /**
+     * Handle an incoming request.
+     *
+     * @param  \Illuminate\Http\Request $request
+     * @param  \Closure $next
+     * @return mixed
+     */
+    public function handle($request, Closure $next)
+    {
+        $response = $next($request);
+        $origin = $request->server('HTTP_ORIGIN') ? $request->server('HTTP_ORIGIN') : '';
+        $allow_origin = [
+            'http://localhost:3000',
+        ];
+//        if (in_array($origin, $allow_origin)) {
+        $response->header('Access-Control-Allow-Origin', "*");
+        $response->header('Access-Control-Allow-Headers', 'Origin, Content-Type, Cookie,X-Requested-With, X-CSRF-TOKEN, Accept, Authorization, X-XSRF-TOKEN');
+        $response->header('Access-Control-Expose-Headers', 'Authorization, authenticated');
+        $response->header('Access-Control-Allow-Methods', 'GET, POST, PATCH, PUT, OPTIONS');
+        $response->header('Access-Control-Allow-Credentials', 'true');
+//        }
+        return $response;
+    }
+}
\ No newline at end of file