如何在抓取scrapy时保持会话的身份验证？

COOKIES_ENABLED = True

from scrapy import Request

class MySpider(scrapy.Spider):
    name = 'myspider'
    start_urls = ['http://www.example.com']

    def start_requests(self):
        # 添加身份验证信息到请求头
        headers = {
            'Authorization': 'Bearer <token>',
        }
        yield Request(url=self.start_urls[0], headers=headers, callback=self.parse)

    def parse(self, response):
        # 解析响应数据
        pass

from scrapy import Spider, Request, CookieJar

class MySpider(scrapy.Spider):
    name = 'myspider'
    start_urls = ['http://www.example.com']

    def __init__(self, *args, **kwargs):
        super(MySpider, self).__init__(*args, **kwargs)
        self.cookiejar = CookieJar()

    def start_requests(self):
        # 添加身份验证信息到请求头
        headers = {
            'Authorization': 'Bearer <token>',
        }
        yield Request(url=self.start_urls[0], headers=headers, callback=self.parse, meta={'cookiejar': self.cookiejar})

    def parse(self, response):
        # 解析响应数据
        pass