"scrapy-default" （默认）
| scrapy.spidermiddlewares.referer.DefaultReferrerPolicy
|
"no-referrer" | scrapy.spidermiddlewares.referer.NoReferrerPolicy
|
"no-referrer-when-downgrade" | scrapy.spidermiddlewares.referer.NoReferrerWhenDowngradePolicy
|
"same-origin" | scrapy.spidermiddlewares.referer.SameOriginPolicy
|
"origin" | scrapy.spidermiddlewares.referer.OriginPolicy
|
"strict-origin" | scrapy.spidermiddlewares.referer.StrictOriginPolicy
|
"origin-when-cross-origin" | scrapy.spidermiddlewares.referer.OriginWhenCrossOriginPolicy
|
"strict-origin-when-cross-origin" | scrapy.spidermiddlewares.referer.StrictOriginWhenCrossOriginPolicy
|
"unsafe-url" | scrapy.spidermiddlewares.referer.UnsafeUrlPolicy
|
