在.htaccess中启用cors

我已经使用SLIM PHP框架创建了一个基本的RESTful服务，现在我试图将其连接起来，以便可以从Angular.js项目访问该服务。我已经知道Angular开箱即用地支持CORS，而我要做的就是Header set Access-Control-Allow-Origin "*"在我的.htaccess文件中添加以下行：

我已经做到了，我的REST应用程序仍然可以正常工作（.htaccess错误导致500个内部服务器没有错误），但是当我尝试从test-cors.org对其进行测试时，它抛出了错误。

Fired XHR event: loadstart
Fired XHR event: readystatechange
Fired XHR event: error

XHR status: 0
XHR status text: 
Fired XHR event: loadend

我的.htaccess文件如下所示

RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^ /index.php [QSA,L]
Header set Access-Control-Allow-Origin "*"
Header set Access-Control-Allow-Methods: "GET,POST,OPTIONS,DELETE,PUT"

我还需要添加其他东西到.htaccess中才能使其正常工作，还是有另一种方法可以在服务器上启用CORS？

因为无论如何我都将所有内容转发到index.php，所以我想我会尝试在PHP中设置标头，而不是.htaccess文件，并且它起作用了！好极了！这是我添加到index.php的其他任何有此问题的人。

// Allow from any origin
if (isset($_SERVER['HTTP_ORIGIN'])) {
    // should do a check here to match $_SERVER['HTTP_ORIGIN'] to a
    // whitelist of safe domains
    header("Access-Control-Allow-Origin: {$_SERVER['HTTP_ORIGIN']}");
    header('Access-Control-Allow-Credentials: true');
    header('Access-Control-Max-Age: 86400');    // cache for 1 day
}
// Access-Control headers are received during OPTIONS requests
if ($_SERVER['REQUEST_METHOD'] == 'OPTIONS') {

    if (isset($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_METHOD']))
        header("Access-Control-Allow-Methods: GET, POST, PUT, DELETE, OPTIONS");         

    if (isset($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']))
        header("Access-Control-Allow-Headers: {$_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']}");

}

这个问题的答案归功于slashingweapon

因为我使用的是Slim，所以我添加了此路由，以便OPTIONS请求获得HTTP 200响应

// return HTTP 200 for HTTP OPTIONS requests
$app->map('/:x+', function($x) {
    http_response_code(200);
})->via('OPTIONS');

应该.htaccess使用add代替set吗？

Header add Access-Control-Allow-Origin "*"
Header add Access-Control-Allow-Methods: "GET,POST,OPTIONS,DELETE,PUT"

这对我有用：

Header add Access-Control-Allow-Origin "*"
Header add Access-Control-Allow-Headers "origin, x-requested-with, content-type"
Header add Access-Control-Allow-Methods "PUT, GET, POST, DELETE, OPTIONS"

就像在这个答案中的特定文件的“自定义HTTP标头”一样，您可以使用<File>以下代码为单个文件启用CORS：

<Files "index.php">
  Header set Access-Control-Allow-Origin "*"
  Header set Access-Control-Allow-Methods: "GET,POST,OPTIONS,DELETE,PUT"
</Files>

将工作100％，在.htaccess中应用：

# Enable cross domain access control
SetEnvIf Origin "^http(s)?://(.+\.)?(1xyz\.com|2xyz\.com)$" REQUEST_ORIGIN=$0
Header always set Access-Control-Allow-Origin %{REQUEST_ORIGIN}e env=REQUEST_ORIGIN
Header always set Access-Control-Allow-Methods "GET, POST, PUT, DELETE, OPTIONS"
Header always set Access-Control-Allow-Headers "x-test-header, Origin, X-Requested-With, Content-Type, Accept"

# Force to request 200 for options
RewriteEngine On
RewriteCond %{REQUEST_METHOD} OPTIONS
RewriteRule .* / [R=200,L]

好像您正在使用旧版本的slim（2.x）。您可以在.htaccess中添加以下行，而无需在PHP脚本中执行任何操作。

# Enable cross domain access control
SetEnvIf Origin "^http(s)?://(.+\.)?(domain_one\.com|domain_two\.net)$" REQUEST_ORIGIN=$0
Header always set Access-Control-Allow-Origin %{REQUEST_ORIGIN}e env=REQUEST_ORIGIN
Header always set Access-Control-Allow-Methods "GET, POST, PUT, DELETE"
Header always set Access-Control-Allow-Headers: Authorization

# Force to request 200 for options
RewriteEngine On
RewriteCond %{REQUEST_METHOD} OPTIONS
RewriteRule .* / [R=200,L]

多亏了Devin，我才找到了适用于我的具有多域访问权限的SLIM应用程序的解决方案。

在htaccess中：

SetEnvIf Origin "http(s)?://(www\.)?(allowed.domain.one|allowed.domain.two)$" AccessControlAllowOrigin=$0$1
Header set Access-Control-Allow-Origin %{AccessControlAllowOrigin}e env=AccessControlAllowOrigin
Header set Access-Control-Allow-Credentials true

在index.php中

// Access-Control headers are received during OPTIONS requests
if ($_SERVER['REQUEST_METHOD'] == 'OPTIONS') {

    if (isset($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_METHOD']))
        header("Access-Control-Allow-Methods: GET, POST, PUT, DELETE, OPTIONS");         

    if (isset($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']))
        header("Access-Control-Allow-Headers: {$_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']}");
}
// instead of mapping:
$app->options('/(:x+)', function() use ($app) {
    //...return correct headers...
    $app->response->setStatus(200);
});

我尝试了@abimelex解决方案，但是在Slim 3.0中，映射OPTIONS请求的过程如下：

$app = new \Slim\App();
$app->options('/books/{id}', function ($request, $response, $args) {
    // Return response headers
});

https://www.slimframework.com/docs/objects/router.html#options-route