# thinkphp5.1+uni-app接口开发中跨域问题解决方案 ## 具体操作 **在对应目录下创建此类**\=**application\\api\\behavior\\CORS.php** **来到tags.php** // 应用初始化 'app_init' => [ 'app\\api\\behavior\\CORS' ], ``` <?php namespace app\api\behavior; use think\Response; class CORS { public function appInit(){ // Allow from any origin if (isset($_SERVER['HTTP_ORIGIN'])) { // Decide if the origin in $_SERVER['HTTP_ORIGIN'] is one // you want to allow, and if so: header("Access-Control-Allow-Origin: {$_SERVER['HTTP_ORIGIN']}"); header('Access-Control-Allow-Credentials: true'); header('Access-Control-Max-Age: 86400'); // cache for 1 day } // Access-Control headers are received during OPTIONS requests if ($_SERVER['REQUEST_METHOD'] == 'OPTIONS') { if (isset($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_METHOD'])) // may also be using PUT, PATCH, HEAD etc header("Access-Control-Allow-Methods: GET, POST, OPTIONS"); if (isset($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS'])) header("Access-Control-Allow-Headers: {$_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']}"); exit(0); } } ```