通过扩展名添加请求

Question

我创建了自定义scrapy扩展名，并添加到scrapysetting.py此扩展程序必须通过pika从Rabbitmq中提取网址，然后发出“抓抓蜘蛛”的请求蜘蛛打开时-这意味着蜘蛛开始爬行，我通过pika获取了网址，但如何从此网址发出对刮y蜘蛛的请求？我的扩展名：

import pika
from scrapy import signals


class AddRequestExample:

    def __init__(self, stats):
        self.stats = stats

    @classmethod
    def from_crawler(cls, crawler):
        s = cls(crawler)
        crawler.signals.connect(s.spider_opened, signal=signals.spider_opened)
        return s

    def spider_opened(cls, spider):
        connection = pika.BlockingConnection(pika.ConnectionParameters(host='localhost'))
        channel = connection.channel()
        url = channel.basic_get(queue='hello')[2]
        # Here i have to make request with url above

Answer 1