net core 中跨域设置

net core 中跨域设置代码如下：

 // 设置跨域
            services.AddCors(options =>
            {
                options.AddPolicy("domains_all",
                    builder =>
                    {
                        builder = builder.AllowAnyMethod().AllowAnyHeader().AllowCredentials().WithOrigins(apiSettings.Cors);
                    });
            });