跨域处理

app/middleware.php

@@ -0,0 +1,13 @@
+<?php
+// 全局中间件定义文件
+return [
+    // 全局请求缓存
+    // \think\middleware\CheckRequestCache::class,
+    // 多语言加载
+    // \think\middleware\LoadLangPack::class,
+    // Session初始化
+    // \think\middleware\SessionInit::class
+    // 
+    // 跨域请求
+    app\middleware\AllowCrossDomain::class
+];

app/middleware/AllowCrossDomain.php

@@ -0,0 +1,64 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: Administrator
+ * Date: 2021/4/9
+ * Time: 17:51
+ */
+declare (strict_types = 1);
+
+namespace app\middleware;
+
+use Closure;
+use think\Config;
+use think\Request;
+use think\Response;
+
+class AllowCrossDomain
+{
+
+    protected $cookieDomain;
+
+    // header头配置
+    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,token',
+    ];
+
+
+    /**
+     * AllowCrossDomain constructor.
+     * @param Config $config
+     */
+    public function __construct(Config $config)
+    {
+        $this->cookieDomain = $config->get('cookie.domain', '');
+    }
+
+    /**
+     * 允许跨域请求
+     * @access public
+     * @param Request $request
+     * @param Closure $next
+     * @param array   $header
+     * @return Response
+     */
+    public function handle($request, Closure $next, ?array $header = [])
+    {
+        $header = !empty($header) ? array_merge($this->header, $header) : $this->header;
+
+        if (!isset($header['Access-Control-Allow-Origin'])) {
+            $origin = $request->header('origin');
+
+            if ($origin && ('' == $this->cookieDomain || strpos($origin, $this->cookieDomain))) {
+                $header['Access-Control-Allow-Origin'] = $origin;
+            } else {
+                $header['Access-Control-Allow-Origin'] = '*';
+            }
+        }
+
+        return $next($request)->header($header);
+    }
+}