我在Laravel Lumen上有一个api，我们通过Postman和Ruby Rest Client进行测试，一切都很顺利，但是我们创建了一个简单的Auth Login来响应Web令牌，一切正常，但在我们的React App上实际上我们有这个“405 405方法不允许”。
我们使用下一个代码创建一个类：
<?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;
}
}
我们在bootstrap / app.php上添加
$app->routeMiddleware([
'auth' => App\Http\Middleware\Authenticate::class,
'cors' => palanik\lumen\Middleware\LumenCors::class,
]);
我们的路线：
$app->group(['middleware' => 'cors'], function($app)
{
$app->post('/auth/login', function() {
return response()->json([
'message' => 'CORS OPTIONS Accepted.',
]);
});
});
我们的其他客户端一切顺利，但我在React js应用程序上的说法是因为浏览器发送了OPTIONS，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);
});
错误con React log： 问题是OPTIONS在POST之前发送给浏览器。 标题回复： HTTP / 1.1 405方法不允许 允许：POST 缓存控制：无缓存，私有 内容类型：text / html;字符集= UTF-8 日期：太阳，2017年10月29日01:30:34 GMT 服务器：Apache / 2.4.18（Ubuntu） transfer-encoding：chunked 连接：保持活力
我们在API上缺少什么？
问候。
答案 0 :(得分：2)
在发送原始请求之前，React发送Http方法选项请求，检查API服务器是否接受跨域请求？
以下是我采用的方法：
添加方法option
Route::options(
'/{any:.*}',
[
'middleware' => ['CorsMiddleware'],
function (){
return response(['status' => 'success']);
}
]
);
CorsMiddleware是用于处理请求的中间件。
<?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 $response;
}
}
加载$app->routeMiddleware
bootstrap/app.php部分
将所有应用程序网址保留在组中，检查CorsMiddleware
Route::group(['middleware' => 'CorsMiddleware'], function($router){
$app->post('/auth/login', function() {
return response()->json([
'message' => 'CORS OPTIONS Accepted.',
]);
});
}
答案 1 :(得分：1)
您可以添加应返回200代码的简单OPTIONS处理程序 这是一个有用的集成示例：
答案 2 :(得分：0)
最后，我找到了一种干净的方法。只需将以下行添加到.htaccess中（如果您不知道，.htaccess位于public/.htaccess上）
<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应用程序中定义一条路线，如下所示：
Route::options('/{any:.*}', function() { return response(['status' => 'success']); });};
当然您需要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