[rack-cors gem更改接受标头从json到html

Posted 2021-04-28

我有一个Rails 3应用程序。在API开发过程中，由于unexpected OPTIONS requests而使OPTIONS遇到了一些麻烦。因此，我决定使用CORS宝石。

rack-cors

config/initializers/cors.rb

我使用以下jQuery代码发送AJAX请求：

Rails.application.config.middleware.insert_before 0, Rack::Cors do
  allow do
    origins '*'
    resource '/api/*', headers: :any,
                       methods: [:get, :post, :put, :options]
  end
end

[在使用$.ajax({ contentType: "application/json; charset=utf-8", type: 'POST', dataType: 'json', url: url, data: JSON.stringify(data) }).done(success).fail(fail); 之前（在rack-cors场景中，它运作良好）。但是在安装localhost <-> localhost之后，我抓住了rack-cors，并在日志中找到了该行：

500 error

[似乎Rails忽略了Started POST "/api/my_resource/" for 127.0.0.1 at 2015-12-04 20:34:00+0300 Processing by Api::MyResourceController#create as html 内容类型要求。我该怎么做才能解决此问题？

请求标题：

json

响应标题：

POST /api/my_resource/ HTTP/1.1
Host: localhost:3000
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:42.0) Gecko/20100101 Firefox/42.0
Accept: application/json, text/javascript, */*; q=0.01
Accept-Language: ru,en-US;q=0.7,en;q=0.3
Accept-Encoding: gzip, deflate
DNT: 1
Content-Type: application/json; charset=utf-8
Content-Length: 870
Origin: null
Connection: keep-alive
Pragma: no-cache
Cache-Control: no-cache

答案

尝试移至HTTP/1.1 500 Internal Server Error Content-Type: text/html; charset=utf-8 Content-Length: 963 X-Request-Id: e4150020dffb0fcc34cf04e134584b06 X-Runtime: 0.380448 access-control-allow-origin: null Access-Control-Allow-Methods: GET, POST, PUT, OPTIONS Access-Control-Max-Age: 1728000 Access-Control-Allow-Credentials: true Vary: Origin X-Rack-CORS: hit Server: WEBrick/1.3.1 (Ruby/2.1.4/2014-10-27) Date: Fri, 04 Dec 2015 17:30:10 GMT Connection: Keep-Alive

application.rb