Scrapy 为什么我没有收到start_请求的响应？

我使用start_请求从sqlite数据库中获取URL列表。 但是当我运行代码时，我没有得到任何响应

这是密码-

import scrapy
import sqlite3
from datetime import datetime, timedelta
import json

class A1hrlaterSpider(scrapy.Spider):
    name = 'onehrlater'

def start_requests(self):    
    timenow = datetime.now()
    delta = timedelta(minutes=0)
    delta2 = timedelta(minutes=1)
    past_time = timenow - delta
    past_time2 = timenow - delta2
    conn = sqlite3.connect('ddother.db')
    c = conn.cursor()
    c.execute("SELECT adUrl FROM database WHERE timestamp BETWEEN ? AND ?", (past_time2, past_time))
    all_urls = c.fetchall()
    urls = [item[0] for item in all_urls]
    for url in urls:
        yield scrapy.Request(url=url, callback=self.parse)

def parse(self, response):
    r = response.xpath('//script[contains(text(),"adDetails")]').get()
    
    print(r)

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任何帮助都将不胜感激。谢谢

日志中是否显示了相关信息？如果您对URL进行硬编码而不是从数据库中获取URL，是否有效？请看