THINKPHP跨域报错的解决方案

这篇文章主要介绍了THINKPHP跨域报错hasbeenblockedbyCORSpolicy:Responsetopreflightrequestdoesn'tpassaccesscontrolcheck的解决方案,文中通过代码示例给大家介绍的非常详细,需要的朋友可以参考下

报错：has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.

环境：thinkphp6 +nginx

今天和VUE配合调用接口的时候发现跨域报错。

参考

跨域请求 · ThinkPHP5.1完全开发手册 · 看云

中间件 · ThinkPHP6.0完全开发手册 · 看云

按照官网给出的例子，在中间件配置允许跨域

<?php // 中间件配置 use think\middleware\AllowCrossDomain; return [    AllowCrossDomain::class]; 

前端请求偶尔还是会出现了跨域请求提示

Access to XMLHttpRequest at from origin has been blocked by CORS policy: Request header field x-token is not allowed by Access-Control-Allow-Headers in preflight response.

php在批量导入excel数据更新时偶尔会出现这个问题，出现时间不定，中间件都配置了跨域还是不行。

新建一个自定义的跨域中间件

<?php namespace app\middleware;use think\middleware\AllowCrossDomain;  class AllowCrossDomainMiddleware extends AllowCrossDomain{    // 加入自定义请求头参数 X-Token    protected $header = [        'Access-Control-Allow-Credentials' => 'true',        'Access-Control-Max-Age'           => 1800,        'Access-Control-Allow-Methods'     => 'GET, POST, PATCH, PUT, DELETE, OPTIONS',        'Access-Control-Allow-Headers'     => 'Authorization, Content-Type, If-Match, If-Modified-Since, If-None-Match, If-Unmodified-Since, X-CSRF-TOKEN, X-Requested-With, X-Token',    ];}

重新配置中间件

<?php // 中间件配置 use think\middleware\AllowCrossDomain;use app\middleware\AllowCrossDomainMiddleware; return [    // 不使用默认的跨域中间件    // AllowCrossDomain::class     // 使用自定义跨域中间件    AllowCrossDomainMiddleware::class]; 

中间件，入口文件、路由都折腾了好几遍不行。

最后解决办法：

可以在入口文件添加以下代码，单独处理options请求

public/index.php

// 添加允许跨域请求头header("'Access-Control-Allow-Credentials: true");header("Access-Control-Allow-Origin: *");header("Access-Control-Allow-Headers: Authorization, Content-Type, If-Match, If-Modified-Since, If-None-Match, If-Unmodified-Since, X-CSRF-TOKEN, X-Requested-With, X-Token");header('Access-Control-Allow-Methods: GET, POST, PUT, DELETE, OPTIONS, PATCH'); // 处理 OPTIONS 请求if ($_SERVER['REQUEST_METHOD'] == 'OPTIONS') {    exit;}