Python爬虫实战之使用Scrapy爬取豆瓣图片

from scrapy import cmdline

cmdline.execute("scrapy crawl banciyuan".split())

from scrapy import Spider
import scrapy

from banciyuan.items import BanciyuanItem


class BanciyuanSpider(Spider):
    name = "banciyuan"
    allowed_domains = ["movie.douban.com"]
    start_urls = ["https://movie.douban.com/celebrity/1025156/photos/"]
    url = "https://movie.douban.com/celebrity/1025156/photos/"

    def parse(self, response):
        num = response.xpath("//div[@class="paginator"]/a[last()]/text()").extract_first("")
        print(num)
        for i in range(int(num)):
            suffix = "?type=C&start=" + str(i * 30) + "&sortby=like&size=a&subtype=a"
            yield scrapy.Request(url=self.url + suffix, callback=self.get_page)

    def get_page(self, response):
        href_list = response.xpath("//div[@class="article"]//div[@class="cover"]/a/@href").extract()
        # print(href_list)
        for href in href_list:
            yield scrapy.Request(url=href, callback=self.get_info)

    def get_info(self, response):
        src = response.xpath(
            "//div[@class="article"]//div[@class="photo-show"]//div[@class="photo-wp"]/a[1]/img/@src").extract_first("")
        # print(response.body)
        item = BanciyuanItem()
        item["title"] = title
        item["src"] = [src]
        yield item

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

import scrapy


class BanciyuanItem(scrapy.Item):
    # define the fields for your item here like:
    src = scrapy.Field()
    def get_media_requests(self, item, info):
        yield scrapy.Request(url=item["src"][0], meta={"item": item})

    def file_path(self, request, response=None, info=None, *, item=None):
        item = request.meta["item"]
        image_name = item["src"][0].split("/")[-1]
        # image_name.replace(".webp", ".jpg")
        path = "%s/%s" % (item["title"].split(" ")[0], image_name)

        return path

# Scrapy settings for banciyuan project
#
# For simplicity, this file contains only settings considered important or
# commonly used. You can find more settings consulting the documentation:
#
#     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 = "banciyuan"

SPIDER_MODULES = ["banciyuan.spiders"]
NEWSPIDER_MODULE = "banciyuan.spiders"


# Crawl responsibly by identifying yourself (and your website) on the user-agent
USER_AGENT = {"User-Agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.80 Safari/537.36"}


# Obey robots.txt rules
ROBOTSTXT_OBEY = False

# 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 = {
#    "banciyuan.middlewares.BanciyuanSpiderMiddleware": 543,
#}

# Enable or disable downloader middlewares
# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
#DOWNLOADER_MIDDLEWARES = {
#    "banciyuan.middlewares.BanciyuanDownloaderMiddleware": 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 = {
   "banciyuan.pipelines.BanciyuanPipeline": 1,
}
IMAGES_STORE = "./images"

# 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"