C# ABP 允许跨域请求

首先配置Web Api：

1. 在Web API项目下，安装包

Install-Package Microsoft.AspNet.WebApi.Cors

2. 然后在 WebApiModule 的方法Initialize中，添加下面代码：（代码最好在ConfigureSwaggerUi的上面）

//设置跨域
            var cors = new EnableCorsAttribute("*", "*", "*");
            cors.SupportsCredentials = true;
            GlobalConfiguration.Configuration.EnableCors(cors);

 

上面配置了Web Api的跨域，然后我们想要在Web MVC中也支持跨域。下面我们给出登录模块支持跨域的例子。

 

然后配置Web MVC项目，让登录支持跨域：

1.我们创建一个Attribute类，叫做AcceessOriginalAttribute，如下：

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace MagicQCes.Web.Filters
{
    public class AcceessOriginalAttribute : ActionFilterAttribute, IExceptionFilter
    {
        public void InternalExuteAccessControle(HttpResponseBase response, HttpRequestBase request)
        {
            var header = response.Headers;
            var requestHeader = request.Headers;
            header.Set("Access-Control-Allow-Origin", requestHeader["Origin"] ?? "http://" + requestHeader["Host"]);
            header.Set("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");
            header.Set("Access-Control-Max-Age", "3600");
            header.Set("Access-Control-Allow-Headers", "*");
            header.Set("Access-Control-Allow-Credentials", "true");
        }
        public override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            base.OnActionExecuting(filterContext);
        }

        public override void OnActionExecuted(ActionExecutedContext filterContext)
        {
            InternalExuteAccessControle(filterContext.HttpContext.Response, filterContext.HttpContext.Request);
            base.OnActionExecuted(filterContext);
        }

        public override void OnResultExecuting(ResultExecutingContext filterContext)
        {
            base.OnResultExecuting(filterContext);
        }

        public override void OnResultExecuted(ResultExecutedContext filterContext)
        {
            base.OnResultExecuted(filterContext);
        }

        public void OnException(ExceptionContext filterContext)
        {
            filterContext.Result = new JsonResult()
            {
                Data = new { Succeed = 0, Message = filterContext.Exception.Message },
                JsonRequestBehavior = JsonRequestBehavior.AllowGet
            };
            filterContext.ExceptionHandled = true;
        }
    }
}

 

2.然后，我们在AccountController中，的Login方法中，添加上面属性，如下：

        [AcceessOriginal]
        public async Task Login(string usernameOrEmailAddress, string Password)

 

这样，登录也支持跨域了。