在带有基本身份验证请求的 ajax cors 的情况下，浏览器身份验证弹出窗口不显示

Question

从域 A 的网页中，我向域 B 发出 ajax 请求，以获取在域 B 上配置了基本身份验证的 JSON。我可以访问两个域上的代码。

我在域 B 上配置了所有必需的 CORS 标头（在阅读了一些 stackoverflow 之后，甚至将 Access-Control-Allow-Origin 标头值设为特定而不是“*”）

我期待的是浏览器弹出基本身份验证，但 POST 请求只是失败并显示 401。

我可以看到服务器已响应 PRE-FLIGHT OPTION 请求的预期响应标头，位于 OPTION 和实际 POST 方法的请求和响应标头下方发生的调用

***OPTION REQUEST***
Host: DOMAIN_B:8085
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Access-Control-Request-Method: POST
Access-Control-Request-Headers: x-requested-with
Referer: http://DOMAIN_A:2280/app/
Origin: http://DOMAIN_A:2280
Connection: keep-alive

***OPTION RESPONSE***
HTTP/1.1 200 OK
X-Powered-By: Express
Access-Control-Allow-Origin: http://DOMAIN_A:2280
Vary: Origin
Access-Control-Allow-Credentials: true
Access-Control-Allow-Methods: GET,HEAD,PUT,PATCH,POST,DELETE
Access-Control-Allow-Headers: Content-Type,Authorization,x-requested-with
Access-Control-Max-Age: 1
Allow: GET,POST
Content-Type: text/html; charset=utf-8
Content-Length: 8
Date: Fri, 04 Jan 2019 12:48:48 GMT
Connection: keep-alive

*** ACTUAL POST REQUEST***
Host: DOMAIN_B:8085
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
Accept: */*
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Referer: http://DOMAIN_A:2280/app/
X-Requested-With: XMLHttpRequest
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
Content-Length: 105
Origin: http://DOMAIN_A:2280
Connection: keep-alive

*** ACTUAL POST REQUEST***
HTTP/1.1 401 Unauthorized
X-Powered-By: Express
Vary: X-HTTP-Method-Override, Origin
Access-Control-Allow-Origin: http://DOMAIN_A:2280
Access-Control-Allow-Credentials: true
Access-Control-Allow-Methods: POST,GET,PUT,DELETE
Access-Control-Allow-Headers: Content-Type,Authorization,x-requested-with
Access-Control-Max-Age: 1
WWW-Authenticate: Basic realm=artist
Content-Type: text/plain; charset=utf-8
Content-Length: 12
Date: Fri, 04 Jan 2019 12:48:48 GMT
Connection: keep-alive

因此，它期望浏览器查看 POST 调用的响应（401 HTTP 代码和 WWW-Authenticate 标头）应该提示显示本机身份验证弹出窗口，但它没有这样做。我不确定我在这里做错了什么。显示自定义表单以捕获凭据并使用 btoa 函数在 "Authorization" 标头中传递它们不是一个选项

感谢任何帮助，我在这里扯断我的头发！！！

Answer 1

使用basic-authnpm 插件

const auth = require('basic-auth');
app.use(function (request, response, next) {
  var user = auth(request);
  console.log("user => ",user);
  if (!user || !user.name || !user.pass) {
    response.set('WWW-Authenticate', 'Basic realm="example"');
    return response.status(401).send();
  }
  return next();
});