问对象存储 Headers怎样设置，用传统的设置headers还是没效果，如何解决？

var cos = new COS({
    getAuthorization: function (options, callback) {
      var authorization = COS.getAuthorization({
          SecretId: '*****',
          SecretKey: '*****',
          Method: options.Method,
          Key: options.Key,
          Query: {},
          Headers: {
            'Access-Control-Allow-Origin': '*'
            //这里怎样设置，请教一下，现在不管这样设置都是
            //Access-Control-Allow-Origin' header is present on the requested resource. Origin 'null' is therefore not allowed access
          },
          Expires: 60,
      });
      callback(authorization);
    }
});