跨域是什么這里就不細(xì)講, 這里主要是thinkphp5.1, 說一下大概的解決思路

首先,因為前端是自己寫的, 在axios配置中, 我設(shè)置了如下

withCredentials: true // 跨域請求時發(fā)送cookie

// 創(chuàng)建一個axios const service = axios.create({   baseURL: URL ,    withCredentials: true, // 跨域請求時發(fā)送cookie   timeout: 5000 // request timeout })

在后端的配置中,配置的是

header("Access-Control-Allow-Origin: *");

故而拋出了這樣一個錯誤

Access to XMLHttpRequest at 'http://store.ink/admin/me?sid=lbn3mpacfb3k1mbehnk9qh8kf3' from origin 'http://vue-admin-web.ink' has been blocked by CORS policy: The value of the 'Access-Control-Allow-Origin' header in the response must not be the wildcard '*' when the request's credentials mode is 'include'. The credentials mode of requests initiated by the XMLHttpRequest is controlled by the withCredentials attribute.

意思大概為 設(shè)置 withCredentials 為 true 時, origin 是不允許為 *的, origin必須設(shè)置為來源的地址

也就是 http://a.com 請求 http://b.com 的時候, http://a.com 必須設(shè)置origin 為 http://b.com 才能通過

最后參閱配置如下

 $origin = $_SERVER['HTTP_ORIGIN'] ?? '*';         header("Access-Control-Allow-Origin: $origin");         header('Access-Control-Allow-Credentials: true');         header('Access-Control-Allow-Headers: Authorization, Content-Type, If-Match, If-Modified-Since, If-None-Match, If-Unmodified-Since, X-Requested-With');         header('Access-Control-Allow-Methods: GET, POST, PATCH, PUT, DELETE');         header('Access-Control-Max-Age: 1728000');

當(dāng)然, 為 * 的時候也可以這樣

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-Requested-With');         header('Access-Control-Allow-Methods: GET, POST, PATCH, PUT, DELETE');         header('Access-Control-Max-Age: 1728000');

首先 定義個中間件 php think make:middleware CrossDomain

<?php namespace apphttpmiddleware;  use thinkResponse;   class CrossDomain {     public function handle($request, Closure $next)     {         $origin = $_SERVER['HTTP_ORIGIN'] ?? '*';         header("Access-Control-Allow-Origin: $origin");         header('Access-Control-Allow-Credentials: true');         header('Access-Control-Allow-Headers: Authorization, Content-Type, If-Match, If-Modified-Since, If-None-Match, If-Unmodified-Since, X-Requested-With');         header('Access-Control-Allow-Methods: GET, POST, PATCH, PUT, DELETE');         header('Access-Control-Max-Age: 1728000');          return $next($request);     } }

在router.php中

Route::group('', function (){     ....     這里寫路由     .... })->middleware(['CrossDomain']);

然后又有一個新問題

因為如上是走的路由文件,當(dāng)請求的url匹配路由的時候, 會走跨域中間件, 當(dāng)大家都知道的是, delete 和 put 等方法是會提前發(fā)起一個options請求的, 也就是無法匹配路由文件,無法走跨域中間件

故而:

定義一個 錯誤異常接管 https://www.kancloud.cn/manual/thinkphp5_1/354092#_42

.... public function render(Exception $e) {     # 這里來處理跨域問題      $origin = $_SERVER['HTTP_ORIGIN'] ?? '*';     header("Access-Control-Allow-Origin: $origin");     header('Access-Control-Allow-Credentials: true');     header('Access-Control-Allow-Headers: Authorization, Content-Type, If-Match, If-Modified-Since, If-None-Match, If-Unmodified-Since, X-Requested-With');     header('Access-Control-Allow-Methods: GET, POST, PATCH, PUT, DELETE');     header('Access-Control-Max-Age: 1728000');     $type = request()->isAjax() ? 'json' : "html";     $response = thinkresponseJson::create([], $type, 200, []);     return $response; # response  // 在異常處理接管中,必須返回的是一個人response響應(yīng), 而不是 `throw new `拋出一個響應(yīng) } ...

完成。