2

我在使用一个非常基本的网络应用程序时遇到了麻烦。这是我的文件:

公共/index.html

<!DOCTYPE html>

<html lang="en" data-ng-app>
  <body>

    <div data-ng-controller="PlayersCtrl">
      <div data-ng-repeat="player in players">
        {{player.id}}
      </div>
    </div>

    <script src="/angular.min.js"></script>
    <script src="/players.js"></script>
  </body>
</html>

公共/players.js

function PlayersCtrl($scope, $http) {
  $scope.players = [];

  $http({
    method: 'GET',
    url: 'http://localhost:9292/hi'
  }).success(function(data) {
    $scope.players = data;
  });
}

客户端.rb

require 'sinatra'

get '/' do
  headers 'Access-Control-Allow-Origin' => '*'
  headers 'Access-Control-Allow-Headers' => 'Authorization,Accepts,Content-Type,X-CSRF-Token,X-Requested-With'
  headers 'Access-Control-Allow-Methods' => 'GET,POST,PUT,DELETE,OPTIONS'

  send_file File.join(settings.public_folder, 'index.html')
end

api.rb

require 'sinatra'
require 'json'

get '/hi' do
  headers 'Access-Control-Allow-Origin' => '*'
  headers 'Access-Control-Allow-Headers' => 'Authorization,Accepts,Content-Type,X-CSRF-Token,X-Requested-With'
  headers 'Access-Control-Allow-Methods' => 'GET,POST,PUT,DELETE,OPTIONS'

  [id: 1, name: "Bob"].to_json
end

对我来说,这似乎很好。然后,我启动服务器:

启动 api.rb

$ ruby api.rb -p 9292
[2013-03-07 23:57:43] INFO  WEBrick 1.3.1
[2013-03-07 23:57:43] INFO  ruby 2.0.0 (2013-02-24) [x86_64-darwin12.2.0]
== Sinatra/1.3.5 has taken the stage on 9292 for development with backup from WEBrick
[2013-03-07 23:57:43] INFO  WEBrick::HTTPServer#start: pid=62634 port=9292

启动客户端.rb

$ ruby client.rb
[2013-03-07 23:57:40] INFO  WEBrick 1.3.1
[2013-03-07 23:57:40] INFO  ruby 2.0.0 (2013-02-24) [x86_64-darwin12.2.0]
== Sinatra/1.3.5 has taken the stage on 4567 for development with backup from WEBrick
[2013-03-07 23:57:40] INFO  WEBrick::HTTPServer#start: pid=62610 port=4567

但是当我在本地主机(端口 4567)上使用浏览器时,我有以下日志:

api.rb 日志

127.0.0.1 - - [07/Mar/2013 23:57:46] "OPTIONS /hi HTTP/1.1" 404 442 0.0015
localhost - - [07/Mar/2013:23:57:46 CET] "OPTIONS /hi HTTP/1.1" 404 442
http://localhost:4567/ -> /hi

client.rb 日志

127.0.0.1 - - [07/Mar/2013 23:57:46] "GET / HTTP/1.1" 304 - 0.0093
localhost - - [07/Mar/2013:23:57:46 CET] "GET / HTTP/1.1" 304 0
- -> /

我做了很多关于跨域资源共享的搜索,并测试了许多不同的方法。我目前不知道如何处理。感谢您的任何帮助。

编辑:

我的问题是,api.rb 服务器error 404在 AngularJS 调用之后返回一个。而且,有两个OPTIONS /hi请求,这很奇怪。我认为这是 CORS 症状,但我添加了一些标题以接受跨域查询。

取而代之的是,服务器应返回200带有 JSON 的 a。我真的不知道如何解决它。

4

1 回答 1

6

我必须将以下内容添加到我的 sinatra 应用程序中才能使其与 CORS 和 angular 一起使用:

options "*" do
  response.headers["Allow"] = "HEAD,GET,PUT,DELETE,OPTIONS"

  # Needed for AngularJS
  response.headers["Access-Control-Allow-Headers"] = "X-Requested-With, X-HTTP-Method-Override, Content-Type, Cache-Control, Accept"

  halt HTTP_STATUS_OK
end

我也使用了 sinatra-cross_origin,但您可能不需要在手动设置标题时看到它。

于 2013-06-11T16:26:34.940 回答