add_header Access-Control-Allow-Origin http://www.fq.yii.com;
add_header Access-Control-Allow-Origin http://www.d.yii.com;

Response Headers
Access-Control-Allow-Origin: http://www.fq.yii.com
Access-Control-Allow-Origin: http://www.d.yii.com
Connection: keep-alive
Content-Type: application/json; charset=UTF-8
... ...

Request Headers
Accept: */*
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.8
Host: api.d.fanhaobai.com
Origin: http://www.fq.yii.com
Proxy-Connection: keep-alive
... ...

class BaseController extends Controller
{
  /**
   * @inheritdoc
   */
  public function behaviors()
  {
    return [
      'corsFilter' => [
        'class' => \yii\filters\Cors::className(),
        'cors' => [
          //运行cors域名列表
          'Origin' => ['http://www.d.yii.com', 'http://www.fq.yii.com'],
          'Access-Control-Allow-Credentials' => true,
        ]
      ],
    ];
  }
}

Access-Control-Allow-Credentials: true
Access-Control-Allow-Origin: http://www.fq.yii.com
Connection: keep-alive
Content-Type: application/json; charset=UTF-8
... ...

class Cors extends ActionFilter
{
  /**
   * @var array CORS所用的响应头
   */
  public $cors = [
    'Origin' => ['*'],
    'Access-Control-Request-Method' => ['GET', 'POST', 'PUT', 'PATCH', 'DELETE', 'HEAD', 'OPTIONS'],
    'Access-Control-Request-Headers' => ['*'],
    'Access-Control-Allow-Credentials' => null,
    'Access-Control-Max-Age' => 86400,
    'Access-Control-Expose-Headers' => [],
  ];
  
  /**
   * 执行action前要做的事
   * @inheritdoc
   */
  public function beforeAction($action)
  {
    $this->request = $this->request "color: #ff0000">总结

通过 Nginx 设置 Access-Control-Allow-Origin 进行 cors，有且只能有一个特定域名，局限性较大。通过代码逻辑操作 Access-Control-Allow-Origin 来实现 cors，则比较灵活，能解决多个域名进行 cors 的需求，但是如果接口异常，跨域设置则会失效。
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。