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DouyinApi.Extensions/ServiceExtensions/CorsSetup.cs

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+using DouyinApi.Common;
+using Microsoft.Extensions.DependencyInjection;
+using System;
+
+namespace DouyinApi.Extensions
+{
+    /// <summary>
+    /// Cors 启动服务
+    /// </summary>
+    public static class CorsSetup
+    {
+        public static void AddCorsSetup(this IServiceCollection services)
+        {
+            if (services == null) throw new ArgumentNullException(nameof(services));
+
+            services.AddCors(c =>
+            {
+                if (!AppSettings.app(new string[] { "Startup", "Cors", "EnableAllIPs" }).ObjToBool())
+                {
+                    c.AddPolicy(AppSettings.app(new string[] { "Startup", "Cors", "PolicyName" }),
+
+                        policy =>
+                        {
+
+                            policy
+                            .WithOrigins(AppSettings.app(new string[] { "Startup", "Cors", "IPs" }).Split(','))
+                            .AllowAnyHeader()//Ensures that the policy allows any header.
+                            .AllowAnyMethod();
+                        });
+                }
+                else
+                {
+                    //允许任意跨域请求
+                    c.AddPolicy(AppSettings.app(new string[] { "Startup", "Cors", "PolicyName" }),
+                        policy =>
+                        {
+                            policy
+                            .SetIsOriginAllowed((host) => true)
+                            .AllowAnyMethod()
+                            .AllowAnyHeader()
+                            .AllowCredentials();
+                        });
+                }
+
+            });
+        }
+    }
+}