scrapy启动后未执行直接结束？

Question

问题描述

最近在学scrapy，再写一个爬取图片的项目的时候，发现启动爬虫后，未执行函数，直接结束了，找了好久没发现到底是那出问题，网上也没有相关答案

同时调试也是直接结束 断点设置再parse_item函数的第一行，根本不给面子┭┮﹏┭┮
调试提示↓

pydev debugger: process 3331 is connecting

Connected to pydev debugger (build 193.6494.30)

问题出现的环境背景及自己尝试过哪些方法

• 一开始爬的彼岸图网，后来换了zol壁纸
• 修改headers
• 尝试过重建项目
• 怀疑是不是IP被禁，但是再scrapy shell下可以访问
• 换了一个类似的目标网站同样不行

相关代码

爬虫代码meizi.py

# -*- coding: utf-8 -*-
import scrapy
from ..items import CrawlBiAnItem
from scrapy.linkextractors import LinkExtractor
from scrapy.spiders import CrawlSpider, Rule


class MeiziSpider(CrawlSpider):
    name = 'meizi'
    allowed_domains = ['sj.zol.com.cn/']
    start_urls = ['http://sj.zol.com.cn/bizhi/meinv/2.html']
    base_url = 'sj.zol.com.cn/bizhi/meinv'
    img_urls = []
    rules = (
        Rule(LinkExtractor(allow=r'http://sj.zol.com.cn/bizhi/meinv/\d{3,5}.html'),
             callback="parse_item", follow=True),
    )

    def parse_item(self, response):
        print("++")
        index_urls = response.xpath("//li[@class='photo-list-padding']//a/@href").getall()
        for i in index_urls:
            index_url = self.base_url + i
            yield scrapy.Request(index_url, callback=self.crawl_img_url)
        item = CrawlBiAnItem(image_urls=self.img_urls)
        yield item

    def crawl_img_url(self, response):
        img_url = response.xpath("//img[@id='bigImg']/@src").get()
        self.img_urls.append(img_url)
        pass

setting

import os
from scrapy.pipelines.images import ImagesPipeline

IMAGES_STORE = os.path.join(os.path.dirname(os.path.dirname(__file__)), "images")
BOT_NAME = 'crawl_bi_an'
LOG_LEVEL = 'WARNING'
SPIDER_MODULES = ['crawl_bi_an.spiders']
NEWSPIDER_MODULE = 'crawl_bi_an.spiders'

DEFAULT_REQUEST_HEADERS = {
    'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
    'Accept-Language': 'zh-CN',
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.122 Safari/537.36',
}
ITEM_PIPELINES = {
    'scrapy.pipelines.images.ImagesPipeline': 1
}

pipelines.py

# 无

items.py

import scrapy
class CrawlBiAnItem(scrapy.Item):
    # define the fields for your item here like:
    # name = scrapy.Field()
    image_urls = scrapy.Field()
    images = scrapy.Field()
    pass

Answer 1

改下：

  allowed_domains = ['sj.zol.com.cn']

如果还不行，贴下打印日志

Answer 2

你应该在在pipline内处理图片