PHP代码:

$httpOrigin = isset($_SERVER['HTTP_ORIGIN']) ? $_SERVER['HTTP_ORIGIN'] : null;
if (in_array($httpOrigin, [
    'http://localhost:9000', // Co-worker dev-server
    'http://127.0.0.1:9001', // My dev-server
])) header("Access-Control-Allow-Origin: ${httpOrigin}");
header('Access-Control-Allow-Credentials: true');

下面是如何回显Origin头，如果它匹配你的域与Nginx，这是有用的，如果你想为一个字体多子域:

location /fonts {
    # this will echo back the origin header
    if ($http_origin ~ "example.org$") {
        add_header "Access-Control-Allow-Origin" $http_origin;
    }
}

我努力为一个运行HTTPS的域设置这个，所以我想我会分享这个解决方案。我在我的httpd.conf文件中使用了以下指令:

    <FilesMatch "\.(ttf|otf|eot|woff)$">
            SetEnvIf Origin "^http(s)?://(.+\.)?example\.com$" AccessControlAllowOrigin=$0
            Header set Access-Control-Allow-Origin %{AccessControlAllowOrigin}e env=AccessControlAllowOrigin
    </FilesMatch>

将example.com更改为您的域名。在httpd.conf文件中的<VirtualHost x.x.x.x:xx>中添加此内容。注意，如果你的VirtualHost有一个端口后缀(例如:80)，那么这个指令将不适用于HTTPS，所以你还需要去/etc/apache2/sites-available/default-ssl并在那个文件中添加相同的指令，在<VirtualHost _default_:443>部分。

配置文件更新后，需要在终端上执行以下命令:

a2enmod headers
sudo service apache2 reload

如上所述，Access-Control-Allow-Origin应该是唯一的，如果您位于CDN(内容分发网络)后面，则应该将Vary设置为Origin。

Nginx配置的相关部分:

if ($http_origin ~* (https?://.*\.mydomain\.com(:[0-9]+)?)) {
  set $cors "true";
}
if ($http_origin ~* (https?://.*\.my-other-domain\.com(:[0-9]+)?)) {
  set $cors "true";
}

if ($cors = "true") {
  add_header 'Access-Control-Allow-Origin' "$http_origin";
  add_header 'X-Frame-Options' "ALLOW FROM $http_origin";
  add_header 'Access-Control-Allow-Credentials' 'true';
  add_header 'Vary' 'Origin';
}

我有https://stackoverflow.com/a/7454204/13779574这段代码工作得很好，但当用户进入该页面时给出一个错误。 我用这段代码解决了这个问题。

if (isset($_SERVER['HTTP_ORIGIN'])) {
   $http_origin = $_SERVER['HTTP_ORIGIN'];
   if ($http_origin == "http://localhost:3000" || $http_origin == "http://api.loc/"){  
      header("Access-Control-Allow-Origin: $http_origin");
   }
}

下面是一个Java web应用的解决方案，基于yesthatguy的回答。

我使用的是Jersey REST 1.x

配置web.xml以识别Jersey REST和CORSResponseFilter

<!-- Jersey REST config -->
<servlet>
  <servlet-name>JAX-RS Servlet</servlet-name>
  <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
  <init-param>
    <param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>
    <param-value>true</param-value>
  </init-param>
  <init-param>
    <param-name>com.sun.jersey.spi.container.ContainerResponseFilters</param-name>
    <param-value>com.your.package.CORSResponseFilter</param-value>
  </init-param>
  <init-param>
    <param-name>com.sun.jersey.config.property.packages</param-name>
    <param-value>com.your.package</param-value>
  </init-param>
  <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
  <servlet-name>JAX-RS Servlet</servlet-name>
  <url-pattern>/ws/*</url-pattern>
</servlet-mapping>

下面是CORSResponseFilter的代码

import com.sun.jersey.spi.container.ContainerRequest;
import com.sun.jersey.spi.container.ContainerResponse;
import com.sun.jersey.spi.container.ContainerResponseFilter;


public class CORSResponseFilter implements ContainerResponseFilter{

    @Override
    public ContainerResponse filter(ContainerRequest request,
            ContainerResponse response) {
        
        String[] allowDomain = {"http://localhost:9000","https://my.domain.example"};
        Set<String> allowedOrigins = new HashSet<String>(Arrays.asList (allowDomain));                  
        
        String originHeader = request.getHeaderValue("Origin");
        
        if(allowedOrigins.contains(originHeader)) {
            response.getHttpHeaders().add("Access-Control-Allow-Origin", originHeader);
                        
            response.getHttpHeaders().add("Access-Control-Allow-Headers",
                    "origin, content-type, accept, authorization");
            response.getHttpHeaders().add("Access-Control-Allow-Credentials", "true");
            response.getHttpHeaders().add("Access-Control-Allow-Methods",
                    "GET, POST, PUT, DELETE, OPTIONS, HEAD");
        }
        
        return response;
    }
}