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
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
'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
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; }