Question

可怕的CORS错误：

阻止跨源请求：同源策略禁止读取 http://localhost/mysite/api/test处的远程资源。（原因：CORS 标题＆＃39; Access-Control-Allow-Origin＆＃39;丢失）。

Laravel路线：

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

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 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
    ];

相关的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标头选项，则请求有效。

我也试过https://github.com/barryvdh/laravel-cors但仍然没有快乐。任何帮助表示赞赏！

Answer 1

显然不是理想的解决方案，但它起作用。我已经将它添加到我的routes.php文件的顶部：

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

在没有黑客的情况下让它工作真是太好了......唉。

更新：原来是IIS相关。我最终在web.config文件中设置了标题，现在CORS可以在不破坏routes.php文件的情况下工作。

<httpProtocol>
    <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>
</httpProtocol>

如果要限制访问权限，可以添加出站规则：

      <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>

Answer 2

我解决了我的问题，只需在我的routes.php Laravel 5.2上添加这些行对于大于5.2的routes / web.php

header('Access-Control-Allow-Origin:  *');
header('Access-Control-Allow-Methods:  POST, GET, OPTIONS, PUT, DELETE');
header('Access-Control-Allow-Headers:  Content-Type, X-Auth-Token, Origin, Authorization');

在全局HTTP中间件堆栈中注册Cors中间件

protected $middleware = [
    \Illuminate\Foundation\Http\Middleware\CheckForMaintenanceMode::class,
    \App\Http\Middleware\CorsMiddleware::class
];

Answer 3

您的中间件还可以，但您需要在全球HTTP中间件堆栈中注册Cors中间件。

protected $middleware = [
    \Illuminate\Foundation\Http\Middleware\CheckForMaintenanceMode::class,
    \App\Http\Middleware\CorsMiddleware::class
];

Answer 4

这个问题确实来自于预检请求，但是当我们谈论Laravel时，处理方式需要一些额外的解释 - 主要是OPTIONS请求被路由（其他答案反而是PHP）方式，而不是Laravel方式），所以，你必须将它添加到你的路线才能成功：

Route::options('/{any}', function(){ return ''; })->where('any', '.*');

现在，让我们迎合所有其他方法 - 创建CORS中间件：

namespace App\Http\Middleware;

use Closure;

class Cors
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
        return $next($request)
            ->header('Access-Control-Allow-Origin', '*')
            ->header('Access-Control-Allow-Methods', 'GET, POST, PATCH, PUT, DELETE');
    }
}

最后，对于给定的路由，请使用该中间件：

Route::put('/test', function(){ echo('test'); })->with('cors');

Answer 5

你可以绕过这个没有像Barryvdh \ Cors for Laravel这样与JWT AUTH无法正常工作的中间件，我已经在内核实例化之前在Laravel的index.php中添加了以下语句

header('Access-Control-Allow-Origin: http://localhost:8001');
header('Access-Control-Allow-Methods: GET, POST, PATCH, PUT, DELETE, OPTIONS');
header('Access-Control-Allow-Headers: Origin, Content-Type, X-Auth-Token,Authorization');
header('Access-Control-Allow-Credentials: true');

在

之前加上这个

$kernel = $app->make(Illuminate\Contracts\Http\Kernel::class);

这也适用于JWT AUTH。 请注意，在Access-Control-Allow-Headers中，您应该包含授权，否则授权标头将不允许您的accesstoken，因此JWT AUTH将失败。 快乐编码。

Answer 6

我的解决方案：

$router->group(['prefix' => 'api', 'middleware' => 'cors'], function ($router){
    $router->options('{param1?}/{param2?}/{param3?}', function () {});
});

Answer 7

即使将中间件直接放入$middleware而不是$routeMiddleware或只是在app.php中全局定义标头，这都是一个可怕的决定，因为它将暴露所有端点使用新的CORS政策，以防万一您只想将API的一部分公开给第三方解决方案。

更好的解决方案是仅允许OPTIONS调用在所有端点上通过，并且仍然通过$routeMiddleware重定向其他HTTP方法，以便仅在一部分端点上限制CORS策略。

因此，构建两个中间件：

Cors.php

 <?php

namespace App\Http\Middleware;

use Closure;

class Cors
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
        return $next($request)
          ->header('Access-Control-Allow-Origin', '*')
          ->header('Access-Control-Allow-Methods', '*')
          ->header('Access-Control-Allow-Headers', '*');
    }
}

OptionsCors.php

<?php

namespace App\Http\Middleware;

use Closure;

class OptionsCors
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
      if($request->isMethod('OPTIONS')) {
        return $next($request)
          ->header('Access-Control-Allow-Origin', '*')
          ->header('Access-Control-Allow-Methods', '*')
          ->header('Access-Control-Allow-Headers', '*');
      }
      return $next($request);
    }
}

app / Http / Kernel.php

<?php 
namespace App\Http
{
    class Kernel extends \Illuminate\Foundation\Http\Kernel
    {
        protected $middleware = [
            // ...
            'App\Http\Middleware\OptionsCors',
        ];
        protected $middlewareGroups = [
            'web' => [
                 // ...
            ], 
            'api' => [
                'App\Http\Middleware\UseApiGuard', 
                'throttle:60,1', 
                'bindings'
            ]
        ];
        protected $routeMiddleware = [
            // ...
            'cors' => 'App\Http\Middleware\Cors', 
        ];
    }

}

现在，在您的路由中，您将完全控制收紧的CORS政策将暴露哪些端点：

Route::namespace('Api')->middleware(['cors'])->group(function () {

    Route::get('api/im_open', 'TestController@ping');

});
Route::namespace('Api')->group(function () {

    Route::get('api/im_closed', 'TestController@ping');

});

Answer 8

我通过在 bootstrap/app.php 中添加标题轻松解决了我的问题

header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Methods: *');
header('Access-Control-Allow-Headers: *');

Answer 9

此答案基于此article。 barryvdh/laravel-cors中间件库，可用于解决问题（跨源资源共享）。

第1步安装它：

composer require barryvdh/laravel-cors

第2步：发布图书馆的供应商文件：

php artisan vendor:publish --provider="Barryvdh\Cors\ServiceProvider"

第3步在第2步中运行的命令会将cors.php文件复制到config目录，如下所示：

return [

/*
|--------------------------------------------------------------------------
| Laravel CORS
|--------------------------------------------------------------------------
|
| allowedOrigins, allowedHeaders and allowedMethods can be set to array('*')
| to accept any value.
|
*/

'supportsCredentials' => false,
'allowedOrigins' => ['*'],// ex: ['abc.com', 'api.abc.com']
'allowedHeaders' => ['*'],
'allowedMethods' => ['*'],// ex: ['GET', 'POST', 'PUT', 'DELETE']
'exposedHeaders' => [],
'maxAge' => 0,

];

对于allowedOrigins，值可以是['*']，表示请求的来源可以来自任何域，也可以是特定域的数组，这些域可以是我们允许发送请求的来源到我们的api，就像['first.com', 'second.com', 'register.third.com']

一样

以及allowedMethods可以是['*']，也可以是允许的HTTP verbs列表，例如['POST', 'GET']

第4步注册cors中间件。打开app/Http/kernel.php并将HandleCors课程添加到$routeMiddleware，如下所示：

protected $routeMiddleware = [
'auth' => \Illuminate\Auth\Middleware\Authenticate::class,
'auth.basic' => \Illuminate\Auth\Middleware\AuthenticateWithBasicAuth::class,
'bindings' => \Illuminate\Routing\Middleware\SubstituteBindings::class,
'can' => \Illuminate\Auth\Middleware\Authorize::class,
'guest' => \App\Http\Middleware\RedirectIfAuthenticated::class,
'throttle' => \Illuminate\Routing\Middleware\ThrottleRequests::class,
'cors' => \Barryvdh\Cors\HandleCors::class, // add this line to enable cors to your routes
];

第5步现在，您可以将laravel-cors中间件添加到您想要的任何路由中。例如，在Routes/api.php我会这样做：

Route::apiResource('category', 'CategoryController')->middleware('cors');
Route::apiResource('product', 'ProductController')->middleware('cors');

Laravel 5.2 CORS，GET不适用于预检OPTIONS

9 个答案: