在APP_Start文件夹下面的WebApiConfig.cs文件夹配置跨域
1 public static class WebApiConfig 2 { 3 public static void Register(HttpConfiguration config) 4 { 10 //跨域配置 11 config.EnableCors(new EnableCorsAttribute("*", "*", "*")); 12 13 // Web API 路由 14 config.MapHttpAttributeRoutes(); 16 config.Routes.MapHttpRoute( 17 name: "DefaultApi", 18 routeTemplate: "api/{controller}/{id}", 19 defaults: new { id = RouteParameter.Optional } 20 ); 22 } 23 }