znyc.cloudcar/Znyc.CloudCar.Core/Config/CoreSetup.cs

using Microsoft.Extensions.DependencyInjection;
using Znyc.CloudCar.Configuration;

namespace Znyc.CloudCar.Core.Config
{
    public static class CoreSetup
    {

        public static void AddCoresSetup(this IServiceCollection services)
        {
            if (services == null)
            {
                throw new ArgumentNullException(nameof(services));
            }
            services.AddCors(c =>
            {
                if (!AppSettingsConstVars.CorsEnableAllIPs)
                {
                    c.AddPolicy(AppSettingsConstVars.CorsPolicyName, policy =>
                     {
                         policy.WithOrigins(AppSettingsConstVars.CorsIPs.Split(','));
                         policy.AllowAnyHeader();
                         policy.AllowAnyMethod();
                         policy.AllowCredentials();
                     });
                }
                else
                {
                    //允许任意跨域请求
                    c.AddPolicy(AppSettingsConstVars.CorsPolicyName, policy =>
                     {
                         policy.SetIsOriginAllowed((host) => true)
                         .AllowAnyHeader()
                         .AllowAnyMethod()
                         .AllowCredentials();
                     });
                }
            });
        }
    }
}