Laravel 5.2 CORS，GET不能与预检选项一起使用 [英] Laravel 5.2 CORS, GET not working with preflight OPTIONS

问题描述

可怕的CORS错误：

跨原始请求被阻止：同源策略不允许读取
远程资源 http：// localhost / mysite / api / test 。 （原因：CORS
标题'Access-Control-Allow-Origin'缺失）。

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://localhost/mysite/api/test. (Reason: CORS header 'Access-Control-Allow-Origin' missing).

Laravel路线：

Laravel route:

$router->group(['prefix' => 'api', 'middleware' => 'cors'], function ($router) {
    $router->get('/test', 'MyController@myMethod');
});

Laravel Cors Middlware：

Laravel Cors Middlware:

public function handle($request, Closure $next)
    {
        header('Access-Control-Allow-Origin: *');

        // ALLOW OPTIONS METHOD
        $headers = [
            'Access-Control-Allow-Methods' => 'POST, GET, OPTIONS, PUT, DELETE',
            'Access-Control-Allow-Headers' => 'Content-Type, X-Auth-Token, Origin, Authorization'
        ];
        if ($request->getMethod() == "OPTIONS") {
            // The client-side application can set only headers allowed in Access-Control-Allow-Headers
            return Response::make('OK', 200, $headers);
        }

        $response = $next($request);
        foreach ($headers as $key => $value)
            $response->header($key, $value);
        return $response;
    }

Laravel内核：

Laravel Kernel:

 protected $routeMiddleware = [
        'auth' => \App\Http\Middleware\Authenticate::class,
        'auth.basic' => \Illuminate\Auth\Middleware\AuthenticateWithBasicAuth::class,
        'guest' => \App\Http\Middleware\RedirectIfAuthenticated::class,
        'throttle' => \Illuminate\Routing\Middleware\ThrottleRequests::class,
        'cors' => \App\Http\Middleware\CORS::class
    ];

相关.htaccess：

Relevant .htaccess:

RewriteCond %{HTTP:Authorization} .
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]

Vue.js：

 new Vue({
        el: '#app',
        data: {
           //data here
        },
        http: {
            headers: {
                "Authorization": "Basic " + "apiKeyHere"
            }
        },
        methods: {
            mymethod: function (e)
            {
                e.preventDefault();
                this.$http.get('http://localhost/mysite/api/test').then(
                        function (response)
                        {
                          //do something
                        }
                )
            }
        }
    });

如果我取出Authorization标题选项，请求会生效。

If I take out the Authorization header option the request works.

我也尝试过 https://github.com/barryvdh/laravel-cors ，但仍然没有喜悦。
任何帮助谢谢！

I've also tried https://github.com/barryvdh/laravel-cors but still no joy. Any help appreciated!

推荐答案

显然，不是理想的解决方案，我已经添加到我的routes.php文件的顶部：

Clearly, not the ideal solution but it WORKS. I've added this to the top of my routes.php file:

header('Access-Control-Allow-Origin: *');
header( 'Access-Control-Allow-Headers: Authorization, Content-Type' );

这将是很高兴得到这个工作没有一个黑客...唉。

It would be nice to get this working without a hack... alas.

更新：原来是IIS相关。我最终在web.config文件中设置标题，现在CORS工作没有黑客的routes.php文件。

UPDATE: It turned out to be IIS related. I ended up setting the headers in the web.config file and now CORS works without hacking the routes.php file.

     <customHeaders>
          <add name="Access-Control-Allow-Headers" value="Origin, Authorization, X-Requested-With, Content-Type, Accept" />
          <add name="Access-Control-Allow-Methods" value="POST,GET,OPTIONS,PUT,DELETE" />
     </customHeaders>

如果您想限制访问，可以添加出站规则：

If you want to restrict access, you can add outbound rules:

      <outboundRules>
          <clear />
                <rule name="AddCrossDomainHeader">
                    <match serverVariable="RESPONSE_Access_Control_Allow_Origin" pattern=".*" />
                    <conditions logicalGrouping="MatchAll" trackAllCaptures="true">
                        <add input="{HTTP_ORIGIN}" pattern="(http(s)?://((.+\.)?somesite\.com|(.+\.)?anothersite\.org))" />
                    </conditions>
                    <action type="Rewrite" value="{C:0}" />
                </rule>
      </outboundRules>

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