流明 API CORS Ajax 405 方法不允许

Question

我在 Laravel Lumen 上有一个 api，我们通过 Postman 和 Ruby Rest Client 进行测试，一切顺利，但我们创建了一个简单的 Auth Login 来响应网络令牌，一切正常，但在我们的 React 应用程序上实际上我们有这个“405 405 方法不允许”。

我们用下面的代码创建一个class：

<?php namespace palanik\lumen\Middleware;

use Closure;
use Illuminate\Http\Response;

class LumenCors {

    protected $settings = array(
                'origin' => '*',    // Wide Open!
                'allowMethods' => 'GET,HEAD,PUT,POST,DELETE,PATCH,OPTIONS',
                );

    protected function setOrigin($req, $rsp) {
        $origin = $this->settings['origin'];
        if (is_callable($origin)) {
            // Call origin callback with request origin
            $origin = call_user_func($origin,
                                    $req->header("Origin")
                                    );
        }
        $rsp->header('Access-Control-Allow-Origin', $origin);
    }

    protected function setExposeHeaders($req, $rsp) {
        if (isset($this->settings['exposeHeaders'])) {
            $exposeHeaders = $this->settings['exposeHeaders'];
            if (is_array($exposeHeaders)) {
                $exposeHeaders = implode(", ", $exposeHeaders);
            }

            $rsp->header('Access-Control-Expose-Headers', $exposeHeaders);
        }
    }

    protected function setMaxAge($req, $rsp) {
        if (isset($this->settings['maxAge'])) {
            $rsp->header('Access-Control-Max-Age', $this->settings['maxAge']);
        }
    }

    protected function setAllowCredentials($req, $rsp) {
        if (isset($this->settings['allowCredentials']) && $this->settings['allowCredentials'] === True) {
            $rsp->header('Access-Control-Allow-Credentials', 'true');
        }
    }

    protected function setAllowMethods($req, $rsp) {
        if (isset($this->settings['allowMethods'])) {
            $allowMethods = $this->settings['allowMethods'];
            if (is_array($allowMethods)) {
                $allowMethods = implode(", ", $allowMethods);
            }

            $rsp->header('Access-Control-Allow-Methods', $allowMethods);
        }
    }

    protected function setAllowHeaders($req, $rsp) {
        if (isset($this->settings['allowHeaders'])) {
            $allowHeaders = $this->settings['allowHeaders'];
            if (is_array($allowHeaders)) {
                $allowHeaders = implode(", ", $allowHeaders);
            }
        }
        else {  // Otherwise, use request headers
            $allowHeaders = $req->header("Access-Control-Request-Headers");
        }

        if (isset($allowHeaders)) {
            $rsp->header('Access-Control-Allow-Headers', $allowHeaders);
        }
    }

    protected function setCorsHeaders($req, $rsp) {

        // http://www.html5rocks.com/static/images/cors_server_flowchart.png
        // Pre-flight
        if ($req->isMethod('OPTIONS')) {
            $this->setOrigin($req, $rsp);
            $this->setMaxAge($req, $rsp);
            $this->setAllowCredentials($req, $rsp);
            $this->setAllowMethods($req, $rsp);
            $this->setAllowHeaders($req, $rsp);
        }
        else {
            $this->setOrigin($req, $rsp);
            $this->setExposeHeaders($req, $rsp);
            $this->setAllowCredentials($req, $rsp);
        }
    }

    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next) {

        if ($request->isMethod('OPTIONS')) {
            $response = new Response("", 200);
        }
        else {
            $response = $next($request);
        }

        $this->setCorsHeaders($request, $response);

        return $response;
    }

}

加上bootstrap/app.php

$app->routeMiddleware([
    'auth' => App\Http\Middleware\Authenticate::class,
    'cors' => palanik\lumen\Middleware\LumenCors::class,
]);

而我们的路线：

$app->group(['middleware' => 'cors'], function($app)
{
    $app->post('/auth/login', function() {
        return response()->json([
            'message' => 'CORS OPTIONS Accepted.',
        ]);
    });
});

对于我们的其他客户端，一切都很好，但是我在 React js 应用程序中所说的是因为浏览器发送了一个选项，请求没有传递给 POST。

我们的 Recat Axios 请求：

axios({
    method: 'post',
    url: 'URL',
    data: {
            email: 'Fred',
            password: 'Flintstone'
    }
    }).then(function (response) {
        console.log(response);
    })
    .catch(function (error) {
        console.log(error);
    });

React 日志错误：问题是 OPTIONS 在浏览器 POST 之前发送。 Headers 回应： HTTP/1.1 405 方法不允许允许：POST Cache-Control: no-cache, 私有 Content-Type: text/html;字符集=UTF-8 日期：2017 年 10 月 29 日，星期日 01:30:34 GMT 服务器：Apache/2.4.18 (Ubuntu) transfer-encoding：分块连接：keep-alive

我们 API 缺少什么？

此致。

Answer 1

您可以添加简单的 OPTIONS 处理程序，它应该是 return 200 代码这里有一个有用的例子来整合：

https://gist.github.com/danharper/06d2386f0b826b669552

Answer 2

在发送原始请求之前，React 发送了一个 Http 方法 Options 的请求，该方法检查 API 服务器是否接受跨域请求？

以下是我遵循的方法：

添加方法的通配符路由option

Route::options(
    '/{any:.*}', 
    [
        'middleware' => ['CorsMiddleware'], 
        function (){ 
            return response(['status' => 'success']); 
        }
    ]
);

CorsMiddleware是用来处理请求的中间件

<?php 

namespace App\Http\Middleware;

use Closure;
use Illuminate\Http\Response;

class CorsMiddleware
{
    protected $settings = array(
        'origin' => '*',    // Wide Open!
        'allowMethods' => 'GET,HEAD,PUT,POST,DELETE,PATCH,OPTIONS',
    );

    protected function setOrigin($req, $rsp) {
        $origin = $this->settings['origin'];
        if (is_callable($origin)) {
            // Call origin callback with request origin
            $origin = call_user_func($origin,
                        $req->header("Origin")
                    );
        }
        $rsp->header('Access-Control-Allow-Origin', $origin);
    }

    protected function setExposeHeaders($req, $rsp) {
        if (isset($this->settings['exposeHeaders'])) {
            $exposeHeaders = $this->settings['exposeHeaders'];
            if (is_array($exposeHeaders)) {
                $exposeHeaders = implode(", ", $exposeHeaders);
            }

            $rsp->header('Access-Control-Expose-Headers', $exposeHeaders);
        }
    }

    protected function setMaxAge($req, $rsp) {
        if (isset($this->settings['maxAge'])) {
            $rsp->header('Access-Control-Max-Age', $this->settings['maxAge']);
        }
    }

    protected function setAllowCredentials($req, $rsp) {
        if (isset($this->settings['allowCredentials']) && $this->settings['allowCredentials'] === True) {
            $rsp->header('Access-Control-Allow-Credentials', 'true');
        }
    }

    protected function setAllowMethods($req, $rsp) {
        if (isset($this->settings['allowMethods'])) {
            $allowMethods = $this->settings['allowMethods'];
            if (is_array($allowMethods)) {
                $allowMethods = implode(", ", $allowMethods);
            }

            $rsp->header('Access-Control-Allow-Methods', $allowMethods);
        }
    }

    protected function setAllowHeaders($req, $rsp) {
        if (isset($this->settings['allowHeaders'])) {
            $allowHeaders = $this->settings['allowHeaders'];
            if (is_array($allowHeaders)) {
                $allowHeaders = implode(", ", $allowHeaders);
            }
        }
        else {  // Otherwise, use request headers
            $allowHeaders = $req->header("Access-Control-Request-Headers");
        }
        if (isset($allowHeaders)) {
            $rsp->header('Access-Control-Allow-Headers', $allowHeaders);
        }
    }

    protected function setCorsHeaders($req, $rsp) {
        // http://www.html5rocks.com/static/images/cors_server_flowchart.png
        // Pre-flight
        if ($req->isMethod('OPTIONS')) {
            $this->setOrigin($req, $rsp);
            $this->setMaxAge($req, $rsp);
            $this->setAllowCredentials($req, $rsp);
            $this->setAllowMethods($req, $rsp);
            $this->setAllowHeaders($req, $rsp);
        }
        else {
            $this->setOrigin($req, $rsp);
            $this->setExposeHeaders($req, $rsp);
            $this->setAllowCredentials($req, $rsp);
        }
    }
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next) {
        if ($request->isMethod('OPTIONS')) {
            $response = new Response("", 200);
        }
        else {
            $response = $next($request);
        }
        $this->setCorsHeaders($request, $response);
        return $response;
    }
}

加载 bootstrap/app.php

的中间件 $app->routeMiddleware 部分

将所有应用程序 URL 保留在组中检查 CorsMiddleware

Route::group(['middleware' => 'CorsMiddleware'], function($router){
    $app->post('/auth/login', function() {
        return response()->json([
            'message' => 'CORS OPTIONS Accepted.',
        ]);
    });
}

Answer 3

最后我找到了一个干净的方法。只需将以下行添加到 .htaccess（如果您不知道，.htaccess 已位于 public/.htaccess）：

<IfModule mod_headers.c>
    Header add Access-Control-Allow-Origin "*"
    Header set Access-Control-Allow-Headers "*"
    Header set Access-Control-Allow-Methods "PUT, GET, POST, DELETE, OPTIONS"
</IfModule>

然后，在您的 Laravel/Lumen 应用程序中定义一个路由，如下所示：

Route::options('/{any:.*}', function() { return response(['status' => 'success']); });};

当然需要 mod-rewrite 和 mod-headers。您可以使用以下命令 (Ubuntu) 启用它们（如果尚未启用）：

a2enmod rewrite
a2enmod headers
systemctl reload apache2

流明 API CORS Ajax 405 方法不允许

Lumen API CORS Ajax 405 Method Not Allowed

rest

reactjs

lumen

axios