一般情况WebApi都是跨域请求,没有设置跨域一般会报以下错误 No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:48057' is therefore not allowed access. ASP.net Core 跨域有两种,全局和区域 全局跨域: 打开Startup.cs文件.在ConfigureServices方法中添加以下代码 1
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
跨越问题主要发生在客户端ajax请求时,为了安全设置,默认webapi是不允许ajax跨越请求的,不过有方法设置让支持跨越,我说说最常见的两种方法 一.jquery jsonp 缺点:JSONP也有局限性,只能针对于Get请求不能用于POST请求 1.新建过滤器 Filters/JsonCallbackAttribute.cs using System.Net.Http; using System.Text; using System.Web.Http.Filters; namespace cm
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Http.Filters; namespace Project1.Application.Web.API { public class CrossSiteAttribute: System.Web.Http.Filters.ActionFilterAttribute { //使用方法: /* 在
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Mvc; namespace Taoke.filter { public class corsAttribute : ActionFilterAttribute { public override void OnActionExecuting(ActionExecutingContext fil