Python scrapy 下載圖片

https://blog.csdn.net/weixin_42336574/article/details/80946587 

https://blog.csdn.net/weixin_42428357/article/details/100050648

# -*- coding: utf-8 -*-
import scrapy
from urllib.parse import urljoin
from Image_download.items import ImageDownloadItem


class ImageSpider(scrapy.Spider):
    name = 'image'
    allowed_domains = ['pic.netbian.com']
    start_urls = ['http://pic.netbian.com/4kmeishi/']

    def parse(self, response):
        # print(response.text)
        item = ImageDownloadItem()
        ul = response.xpath('//ul[@class="clearfix"]/li/a/img/@src').extract()
        for i in ul:
            img_url = urljoin(self.start_urls[0],i)
            img_name = img_url.split('/')[-1]

            item['img_url'] = img_url
            item['img_name'] = img_name
            yield item


if __name__ == '__main__':
    from scrapy.cmdline import execute
    execute('scrapy crawl image'.split())

items.py

# -*- coding: utf-8 -*-

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

import scrapy

# from scrapy.pipelines.images import


class ImageDownloadItem(scrapy.Item):
    # define the fields for your item here like:
    # name = scrapy.Field()
    img_url = scrapy.Field()
    img_name = scrapy.Field()

pipelines.py

# -*- coding: utf-8 -*-

# 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

from scrapy.pipelines.images import ImagesPipeline

from scrapy.http import Request
class Test_download(ImagesPipeline):
    def get_media_requests(self, item, info):
        yield Request(item['img_url'], meta={'name': item['img_name']})

    def file_path(self, request, response=None, info=None):
        # 保存的文件名
        filename = request.meta['name']
        return filename



class ImageDownloadPipeline(object):
    def process_item(self, item, spider):
        return item

settings.py

# -*- coding: utf-8 -*-

# Scrapy settings for Image_download 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 = 'Image_download'

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


# Crawl responsibly by identifying yourself (and your website) on the user-agent
#USER_AGENT = 'Image_download (+http://www.yourdomain.com)'

# 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 = {
#    'Image_download.middlewares.ImageDownloadSpiderMiddleware': 543,
#}

# Enable or disable downloader middlewares
# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
#DOWNLOADER_MIDDLEWARES = {
#    'Image_download.middlewares.ImageDownloadDownloaderMiddleware': 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 = {
   'Image_download.pipelines.Test_download': 300,

}

# 圖片下載路徑
IMAGES_STORE = r'C:\Users\admin\PycharmProjects\untitled\學習\scrapy_learn\Image_download\Image_download\spiders\圖片下載'

# 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'