同源策略禁止读取远程资源 [英] The Same Origin Policy disallows reading the remote resource

问题描述

我可能会遇到Cors问题.我正在做本地开发(反应前端，asp.net核心2 api后端).

I am getting a problem with possibly Cors. I am doing local dev(react frontend, asp.net core 2 api backend).

IE 11和Chrome都没有问题，但是Firefox的请求有问题.

Both IE 11 and Chrome have no problem, but Firefox has a problem with my requests.

我只是不断从通话中收到网络错误".

I just keep getting "Network Error" from my calls.

我在firefox中禁用了"HSTS"，现在我看到的是警告消息"

I disabled "HSTS" in firefox and now I am seeing a "warning message"

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://localhost:44391/api/tokens/auth. (Reason: CORS request did not succeed).

现在在我的cor中，使开发人员变得简单

In my cor right now to make dev simple I just have

public void ConfigureServices(IServiceCollection services)
{
   services.AddCors();
    ...
}




 public void Configure(IApplicationBuilder app, IHostingEnvironment env)
        {
                  app.UseCors(builder => builder
                .AllowAnyOrigin()
                .AllowAnyMethod()
                .AllowAnyHeader()
                .AllowCredentials());
}

推荐答案

我遇到了同样的问题，但事实证明，CORS错误有点像是鲱鱼.我在Firefox中打开了开发者控制台，单击网络"下的选项"请求，然后转到安全性"选项卡.我看到了以下内容:

I had the same issue, but it turned out that the CORS error was a bit of a red herring. I opened the Developer Console in Firefox, clicked on the Options request under Network and then went to the security tab. I saw the following:

发生错误mozilla_pkix_error_self_signed_cert

An error occurred mozilla_pkix_error_self_signed_cert

我通过在Visual Studio中转到.Net Core应用程序的属性"来解决此问题.我从左侧菜单中选择调试".在我的情况下，页面上有一个名为Enable SSL以及URL的复选框( https://localhost:44358/).我在Firefox中浏览到此页面，看到警告页面，并为其添加了安全例外，之后一切正常.

I fixed this by going to the Properties for my .Net Core app in Visual Studio. I selected Debug from the menu on the left hand side. There was a checkbox on the page called Enable SSL along with a URL (https://localhost:44358/ in my case). I browsed to this page in Firefox, got a warning page, added a security exception for it and everything worked as expected after that.

如果您没有看到警告页面，请按照此处的建议清除缓存:证书发行

If you don't see the warning page clear your cache as per the suggestions here: Certificate Issue

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