AngularJS $ http，CORS和http身份验证

因为在AngularJS中使用CORS和http身份验证可能很棘手，所以我编辑了问题以分享一个经验教训。首先，我要感谢igorzg。他的回答对我很有帮助。场景如下：您想使用AngularJS $ http服务将POST请求发送到另一个域。获取AngularJS和服务器设置时，需要注意一些棘手的事情。

首先：在您的应用程序配置中，您必须允许跨域调用

/**
 *  Cors usage example. 
 *  @author Georgi Naumov
 *  gonaumov@gmail.com for contacts and 
 *  suggestions. 
 **/ 
app.config(function($httpProvider) {
    //Enable cross domain calls
    $httpProvider.defaults.useXDomain = true;
});

第二：您必须指定withCredentials：true，并在请求中输入用户名和密码。

 /**
  *  Cors usage example. 
  *  @author Georgi Naumov
  *  gonaumov@gmail.com for contacts and 
  *  suggestions. 
  **/ 
   $http({
        url: 'url of remote service',
        method: "POST",
        data: JSON.stringify(requestData),
        withCredentials: true,
        headers: {
            'Authorization': 'Basic bashe64usename:password'
        }
    });

答案：服务器设置。您必须提供：

/**
 *  Cors usage example. 
 *  @author Georgi Naumov
 *  gonaumov@gmail.com for contacts and 
 *  suggestions. 
 **/ 
header("Access-Control-Allow-Credentials: true");
header("Access-Control-Allow-Origin: http://url.com:8080");
header("Access-Control-Allow-Methods: GET, POST, PUT, DELETE, OPTIONS");
header("Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept, Authorization");

对于每个请求。收到OPTION时，您必须通过：

/**
 *  Cors usage example. 
 *  @author Georgi Naumov
 *  gonaumov@gmail.com for contacts and 
 *  suggestions. 
 **/ 
if($_SERVER['REQUEST_METHOD'] == 'OPTIONS') {
   header( "HTTP/1.1 200 OK" );
   exit();
}

HTTP身份验证以及之后的所有其他操作。

这是在PHP中使用服务器端的完整示例。

<?php
/**
 *  Cors usage example. 
 *  @author Georgi Naumov
 *  gonaumov@gmail.com for contacts and 
 *  suggestions. 
 **/ 
header("Access-Control-Allow-Credentials: true");
header("Access-Control-Allow-Origin: http://url:8080");
header("Access-Control-Allow-Methods: GET, POST, PUT, DELETE, OPTIONS");
header("Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept, Authorization");

if($_SERVER['REQUEST_METHOD'] == 'OPTIONS') {
   header( "HTTP/1.1 200 OK" );
   exit();
}


$realm = 'Restricted area';

$password = 'somepassword';

$users = array('someusername' => $password);


if (isset($_SERVER['PHP_AUTH_USER']) == false ||  isset($_SERVER['PHP_AUTH_PW']) == false) {
    header('WWW-Authenticate: Basic realm="My Realm"');

    die('Not authorised');
}

if (isset($users[$_SERVER['PHP_AUTH_USER']]) && $users[$_SERVER['PHP_AUTH_USER']] == $password) 
{
    header( "HTTP/1.1 200 OK" );
    echo 'You are logged in!' ;
    exit();
}
?>

我的博客上有一篇有关此问题的文章，可以在这里看到。

不，您不必放置凭据，您必须在客户端放置标头，例如：

 $http({
        url: 'url of service',
        method: "POST",
        data: {test :  name },
        withCredentials: true,
        headers: {
                    'Content-Type': 'application/json; charset=utf-8'
        }
    });

并且在服务器端，您必须在此放置标头，这是nodejs的示例：

/**
 * On all requests add headers
 */
app.all('*', function(req, res,next) {


    /**
     * Response settings
     * @type {Object}
     */
    var responseSettings = {
        "AccessControlAllowOrigin": req.headers.origin,
        "AccessControlAllowHeaders": "Content-Type,X-CSRF-Token, X-Requested-With, Accept, Accept-Version, Content-Length, Content-MD5,  Date, X-Api-Version, X-File-Name",
        "AccessControlAllowMethods": "POST, GET, PUT, DELETE, OPTIONS",
        "AccessControlAllowCredentials": true
    };

    /**
     * Headers
     */
    res.header("Access-Control-Allow-Credentials", responseSettings.AccessControlAllowCredentials);
    res.header("Access-Control-Allow-Origin",  responseSettings.AccessControlAllowOrigin);
    res.header("Access-Control-Allow-Headers", (req.headers['access-control-request-headers']) ? req.headers['access-control-request-headers'] : "x-requested-with");
    res.header("Access-Control-Allow-Methods", (req.headers['access-control-request-method']) ? req.headers['access-control-request-method'] : responseSettings.AccessControlAllowMethods);

    if ('OPTIONS' == req.method) {
        res.send(200);
    }
    else {
        next();
    }


});

为了发出CORS请求，必须将标头添加到请求中，同时还要添加他需要检查的标头（在Apache中启用了mode_header）。

在Ubuntu中启用标头：

sudo a2enmod headers

为了使php服务器接受来自不同来源的请求，请使用：

Header set Access-Control-Allow-Origin *
Header set Access-Control-Allow-Methods "GET, POST, PUT, DELETE"
Header always set Access-Control-Allow-Headers "x-requested-with, Content-Type, origin, authorization, accept, client-security-token"