Nginx跨域问题解析与解决

// nginx配置
server {
    listen       81;
    server_name  www.domain1.com;
    location / {
        proxy_pass   http://www.domain2.com:8080;  #反向代理
        proxy_cookie_domain www.domain2.com www.domain1.com; #修改cookie里域名
        index  index.html index.htm;
        # 当用webpack-dev-server等中间件代理接口访问nignx时，此时无浏览器参与，故没有同源限制，下面的跨域配置可不启用
        add_header Access-Control-Allow-Origin http://www.domain1.com;  #当前端只跨域不带cookie时，可为*
        add_header Access-Control-Allow-Credentials true;
    }
}

//Jquery实现
<script>
$.getJSON('http://autofelix.com/api.php&callback=?', function(res) {
     // 处理获得的数据
     console.log(res)
});
</script>

// api.php 文件中的代码
public function getCurl($url, $timeout = 5)
{
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
    $result = curl_exec($ch);
    curl_close($ch);
    return $result;
}
$result = getCurl('http://api.autofelix.cn/userinfo');
return $result;

// 允许所有域名访问
header('Access-Control-Allow-Origin: *');
// 允许单个域名访问
header('Access-Control-Allow-Origin: https://autofelix.com');
// 允许多个自定义域名访问
static public $originarr = [
   'https://autofelix.com',
   'https://baidu.com',
   'https://csdn.net',
];
// 获取当前跨域域名
$origin = isset($_SERVER['HTTP_ORIGIN']) ? $_SERVER['HTTP_ORIGIN'] : '';
if (in_array($origin, self::$originarr)) {
    // 允许 $originarr 数组内的 域名跨域访问
    header('Access-Control-Allow-Origin:' . $origin);
    // 响应类型
    header('Access-Control-Allow-Methods:POST,GET');
    // 带 cookie 的跨域访问
    header('Access-Control-Allow-Credentials: true');
    // 响应头设置
    header('Access-Control-Allow-Headers:x-requested-with,Content-Type,X-CSRF-Token');
}