爬蟲爬取站長素材圖檔 （使用scrapy和imagespipeline）

相關介紹

首先甩上視訊位址 ：詳細介紹見視訊

代碼

目錄結構：

first.py

import scrapy
from Boss.items import BossItem



class FirstSpider(scrapy.Spider):
    name = 'first'
    allowed_domains = ['www.xxx.com']
    start_urls = ['https://sc.chinaz.com/tupian/']

    def parse(self, response):
        div_list = response.xpath('//div[@id = "container"]/div')
        for div in div_list:
            src ="http:"+ div.xpath('./div/a/img/@src2').extract_first()
            # 擷取高清大圖對位址進行裁剪
            sdd =src.split('_')
            src =sdd[0]+'.jpg'

            item = BossItem()
            item['srcs']=src
            yield item

           

items.py

# Define here the models for your scraped items
#
# See documentation in:
# https://docs.scrapy.org/en/latest/topics/items.html

import scrapy


class BossItem(scrapy.Item):
    # define the fields for your item here like:
    srcs = scrapy.Field()
    # name = scrapy.Field()


           

piplines.py

# Define your item pipelines here
#
# Don't forget to add your pipeline to the ITEM_PIPELINES setting
# See: https://docs.scrapy.org/en/latest/topics/item-pipeline.html


# useful for handling different item types with a single interface
from itemadapter import ItemAdapter
from scrapy.pipelines.images import ImagesPipeline
import scrapy
# class BossPipeline:
#     def process_item(self, item, spider):
#         return item


class imgsPipleLine(ImagesPipeline):

    #可以根據圖檔位址進行圖檔資料的請求
    def get_media_requests(self, item, info):
        print(item['srcs'])
        yield scrapy.Request(item['srcs'])


    def file_path(self, request, response=None, info=None):
        imgName = request.url.split('/')[-1]
        return imgName

    def item_completed(self, results, item, info):
        #傳回給下一個即将被執行的管道類
        return item

           

settings.py

#     https://docs.scrapy.org/en/latest/topics/settings.html
#     https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
#     https://docs.scrapy.org/en/latest/topics/spider-middleware.html

BOT_NAME = 'Boss'

SPIDER_MODULES = ['Boss.spiders']
NEWSPIDER_MODULE = 'Boss.spiders'


# Crawl responsibly by identifying yourself (and your website) on the user-agent
USER_AGENT = 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.79 Safari/537.36'

MEDIA_ALLOW_REDIRECTS = True
# Obey robots.txt rules
ROBOTSTXT_OBEY = False
LOG_LEVEL='ERROR'



# Configure maximum concurrent requests performed by Scrapy (default: 16)
#CONCURRENT_REQUESTS = 32

# Configure a delay for requests for the same website (default: 0)
# See https://docs.scrapy.org/en/latest/topics/settings.html#download-delay
# See also autothrottle settings and docs
#DOWNLOAD_DELAY = 3
# The download delay setting will honor only one of:
#CONCURRENT_REQUESTS_PER_DOMAIN = 16
#CONCURRENT_REQUESTS_PER_IP = 16

# Disable cookies (enabled by default)
#COOKIES_ENABLED = False

# Disable Telnet Console (enabled by default)
#TELNETCONSOLE_ENABLED = False

# Override the default request headers:
#DEFAULT_REQUEST_HEADERS = {
#   'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
#   'Accept-Language': 'en',
#}

# Enable or disable spider middlewares
# See https://docs.scrapy.org/en/latest/topics/spider-middleware.html
#SPIDER_MIDDLEWARES = {
#    'Boss.middlewares.BossSpiderMiddleware': 543,
#}

# Enable or disable downloader middlewares
# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
#DOWNLOADER_MIDDLEWARES = {
#    'Boss.middlewares.BossDownloaderMiddleware': 543,
#}

# Enable or disable extensions
# See https://docs.scrapy.org/en/latest/topics/extensions.html
#EXTENSIONS = {
#    'scrapy.extensions.telnet.TelnetConsole': None,
#}

# Configure item pipelines
# See https://docs.scrapy.org/en/latest/topics/item-pipeline.html
ITEM_PIPELINES = {
   'Boss.pipelines.imgsPipleLine': 300,
}

# Enable and configure the AutoThrottle extension (disabled by default)
# See https://docs.scrapy.org/en/latest/topics/autothrottle.html
#AUTOTHROTTLE_ENABLED = True
# The initial download delay
#AUTOTHROTTLE_START_DELAY = 5
# The maximum download delay to be set in case of high latencies
#AUTOTHROTTLE_MAX_DELAY = 60
# The average number of requests Scrapy should be sending in parallel to
# each remote server
#AUTOTHROTTLE_TARGET_CONCURRENCY = 1.0
# Enable showing throttling stats for every response received:
#AUTOTHROTTLE_DEBUG = False

# Enable and configure HTTP caching (disabled by default)
# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html#httpcache-middleware-settings
#HTTPCACHE_ENABLED = True
#HTTPCACHE_EXPIRATION_SECS = 0
#HTTPCACHE_DIR = 'httpcache'
#HTTPCACHE_IGNORE_HTTP_CODES = []
#HTTPCACHE_STORAGE = 'scrapy.extensions.httpcache.FilesystemCacheStorage'
IMAGES_STORE ='./imaged'
           

我遇到的問題

1.問題一：導入items包時，在運作時出現沒有該子產品的問題

直接将該爬蟲項目根目錄改成資源檔案，具體操作如下：選中目錄，滑鼠右鍵，選中make dictorty as 中的resource Root

2.問題二：檔案夾出現了，但是沒有内容

在setting.py 檔案中設定 MEDIA_ALLOW_REDIRECTS = True