解决 Laravel 接收非简单请求时,只有收到 OPTIONS 请求的问题

2020-02-24 12:18:40 浏览数 (1)

错误讯息

No 'Access-Control-Allow-Origin' header is present on the requested resource.

解决方法 1

在 Laravel 安装 laravel-cors,即可解决。

composer require barryvdh/laravel-cors

解决方法 2

    引用 Laravel 处理 OPTIONS 请求的原理探索及批量处理方案

新增中间件 appHttpMiddlewareCors.php:

    发送非简单请求时,伺服器端会先收到一个 OPTIONS 的预请求,前端只有收到这个预请求的正常回应,才会发送正式的 POST 请求。

<?php

namespace AppHttpMiddleware;

use Closure;

class Cors {     /**      * Handle an incoming request.      *      * @param IlluminateHttpRequest $request      * @param Closure $next      * @return mixed      */     public function handle($request, Closure $next)     {         $response = $next($request);

        $response->header('Access-Control-Allow-Origin', '*');

        if ($request->getMethod() === 'OPTIONS') {             $response->header('Access-Control-Allow-Methods', 'GET, POST, PUT, PATCH, DELETE, OPTIONS');             $response->header('Access-Control-Allow-Credentials', 'true');             $response->header('Access-Control-Allow-Headers', 'Authorization, Content-Type, X-PINGOTHER');         }

        return $response;     } }

开启 appHttpKernel.php,新增:

protected $middleware = [     ...

    AppHttpMiddlewarePrecheckCors::class, ];

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