预检中带有 http 401 的 Ajax CORS 请求

问题描述

我现在挣扎了好几个小时.我想向另一个域发出一个简单的 ajax 请求，但总是得到 http 401 错误:

I am struggling for hours now. I want to make a simple ajax request to another domain, but get http 401 Error all the time:

jQuery(document).ready(function($){
  var challengeid = $('#codepressHook').data('challengeid');
  var clicked = false;
  $('#codepressHook').click(function(){
    if(!clicked){
      $.ajax({
        url: "https://dev.radbonus.com/admin/affiliate-connections/retrieveSingle/"+challengeid+".json",
        method: "GET",
        dataType: "json",
        jsonp: false,
        contentType: "application/json",
        xhrFields: {
          withCredentials: true
        },
        beforeSend: function(xhr){
          xhr.setRequestHeader("Authorization", "Basic "+ btoa(username+":"+password));
        },
        success: function(data){
          $('#codepressHock').html(data.data.code);
        },
        error: function(error){
          alert(error);
        }
      });
    }
  });
});

我在服务器端设置了所有相关的 CORS 标头.这是网络流量:

I set all relevant CORS headers on the serverside. Here is the network traffic:

Request URL:https://dev.radbonus.com/admin/affiliate-connections/retrieveSingle/45.json
Request Method:OPTIONS
Status Code:401 Unauthorized
Remote Address:185.102.94.230:443
Referrer Policy:no-referrer-when-downgrade

Response Headers
view source
Access-Control-Allow-Credentials:true
Access-Control-Allow-Headers:Content-Type, X-Requested-With, Authorization, Origin
Access-Control-Allow-Methods:POST, GET, PUT, DELETE, OPTIONS
Access-Control-Allow-Origin:http://radbonus.com
Access-Control-Max-Age:31536000
Content-Length:463
Content-Type:text/html; charset=iso-8859-1
Date:Sat, 24 Jun 2017 11:25:33 GMT
Server:Apache/2.4.18 (Ubuntu)
WWW-Authenticate:Basic realm="Admin"

Request Headers
view source
Accept:*/*
Accept-Encoding:gzip, deflate, sdch, br
Accept-Language:de-DE,de;q=0.8,en-US;q=0.6,en;q=0.4
Access-Control-Request-Headers:authorization,content-type
Access-Control-Request-Method:GET
Connection:keep-alive
Host:dev.radbonus.com
Origin:http://radbonus.com
Referer:http://radbonus.com/plugintest/
User-Agent:Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36

我知道有很多关于这个主题的帖子，但似乎我缺少一些简单的东西.谁能帮帮我?

I know that there are a lot of posts on this topic, but it seems I'm missing something simple. Could anyone help me?

推荐答案

UPDATE 看来我说的不对.Authorization 标头永远不会为 OPTIONS 请求发送.请参阅 sideshowbarker 的评论 - 您需要确保您的服务器不会以 401 响应 OPTIONS 请求.

UPDATE Looks like I was not right. Authorization header is never sent for OPTIONS request. Please see comment by sideshowbarker - you need to make sure that your server doesn't respond with 401 to OPTIONS request.

我不知道你的服务器是用什么语言编写的，但是你以错误的方式实现了授权 - OPTIONS 方法应该从 auth 中排除.另请参阅此处 - OPTIONS 请求身份验证

I don't know what language is your server written in, but you implemented authorization in the wrong way - OPTIONS method should be excluded from auth. Also see here - OPTIONS request authentication

以下是过时的答案:

您的服务器端需要对该请求进行 HTTP 基本身份验证.而且您不提供凭据.401错误与CORS无关；这只是意味着服务器选择不授权您的请求，因为您没有提供身份验证凭据.

Your serverside requires HTTP Basic authentication for this request. And you don't provide credentials. 401 error has nothing to do with CORS; it just means that the server chose to not authorize your request because you didn't provide auth credentials.

如果您尝试打开此网址(如 https://dev.radbonus.com/admin/affiliate-connections/retrieveSingle/1.json) 直接在浏览器中，您将被要求输入登录名和密码，这是浏览器使用 WWW-Authenticate 处理 401 错误的方式 标题.

If you try to open this url (like https://dev.radbonus.com/admin/affiliate-connections/retrieveSingle/1.json) directly in browser, you will be asked to enter login&password, which is how the browser handles 401 error with WWW-Authenticate header.

请注意 Authorization 标头实际上并未包含在您的请求中.所以不要使用 beforeSend 钩子，你应该直接在你的调用中包含标题:

Please notice that Authorization header is actually not included with your request. So instead of using beforeSend hook, you should probably just include header directly in your call:

headers: {
    'Authorization': 'Basic ' + btoa(username+':'+password),
},

并确保 Authorization 标头出现在您的请求中.

And make sure that Authorization header presents in your request.

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