验证环境: dotnet core 2.1/Asp.net core2.1 一.作用域在中间件层 配置的方式是在startup.cs文件Configure(IApplicationBuilder app, IHostingEnvironment env)方法中增加跨域配置.官方示例: // This method gets called by the runtime. Use this method to configure the HTTP request pipeline. public
1.CORS中间件处理跨源请求.以下代码为具有指定源的整个应用程序启用CORS: public void Configure(IApplicationBuilder app, IHostingEnvironment env) { if (env.IsDevelopment()) { app.UseDeveloperExceptionPage(); } else { // The default HSTS value is 30 days. You may want to change this