爬虫 scrapy图片下载

彼岸网 图片下载

img.py

# -*- coding: utf-8 -*-
import scrapy

from imgPro.items import ImgproItem


class ImgSpider(scrapy.Spider):
    name = 'img'
    # allowed_domains = ['www.xxx.com']
    # 起始的url
    start_urls = ['http://www.netbian.com/meinv/index.htm']

    # 其他url
    url = 'http://www.netbian.com/meinv/index_%d.htm'
    page = 2

    def parse(self, response):
        li_list = response.xpath('//*[@id="main"]/div[2]/ul/li')
        for li in li_list:
            img_src = li.xpath('./a/img/@src').extract_first()

            item = ImgproItem()
            item['img_src'] = img_src
            print(img_src)
            yield item

        if self.page <= 3:
            new_url = format(self.url % self.page)

            self.page+=1

            yield scrapy.Request(url=new_url,callback=self.parse)

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


class ImgproItem(scrapy.Item):
    # define the fields for your item here like:
    img_src = scrapy.Field()

piplines.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


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



# 导入模块
import scrapy
from scrapy.pipelines.images import ImagesPipeline
class ImgPileLine(ImagesPipeline):
    # 接收item且将item中存储的img_src进行请求发送
    def get_media_requests(self,item,info):
        yield scrapy.Request(url=item['img_src'])

    # 指定数据存储的路径(文件夹【在配置文件中指定】+图片名称【该方法中返回】)
    def file_path(self,request,response=None,info=None):
        img_name=request.url.split('/')[-1]
        return img_name
    # 将item传递给下一个即将被执行的管道类
    def item_completed(self,result,item,info):
        return item

settings.py

注意更改  开启的管道类   设置文件路径   IMG_STORE

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

# Scrapy settings for imgPro 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 = 'imgPro'

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


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

# UA 伪装
USER_AGENT = 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.87 Safari/537.36'

# Obey robots.txt rules
# 不遵从robot协议
ROBOTSTXT_OBEY = False

# 日志等级
LOG_LEVEL='ERROR'

# 设置文件存储路径
IMAGES_STORE='./imgs'


# 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 = {
#    'imgPro.middlewares.ImgproSpiderMiddleware': 543,
#}

# Enable or disable downloader middlewares
# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
#DOWNLOADER_MIDDLEWARES = {
#    'imgPro.middlewares.ImgproDownloaderMiddleware': 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


#更改对应的管道名
ITEM_PIPELINES = {
   'imgPro.pipelines.ImgPileLine': 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'