我的工作最终结果:
蜘蛛.py:
import scrapy
import re
import urlparse
from scrapy.spiders import CrawlSpider, Rule
from scrapy.linkextractors import LinkExtractor
from scrapy.loader.processors import Join, MapCompose, TakeFirst
from scrapy.pipelines.images import ImagesPipeline
from production.items import ProductionItem
from production.items import ImageItem
class productionSpider(scrapy.Spider):
name = "production"
allowed_domains = ["url"]
start_urls = [
"startingurl.com"
]
def parse(self, response):
for sel in response.xpath('//html/body'):
item = ProductionItem()
img_url = sel.xpath('//a[@idd="followclaslink"]/@href').extract()[0]
yield scrapy.Request(urlparse.urljoin(response.url, img_url),callback=self.parseImages, meta={'item': item})
def parseImages(self, response):
for elem in response.xpath("//img"):
img_url = elem.xpath("@src").extract_first()
yield ImageItem(image_urls=[img_url])
设置.py
BOT_NAME = 'production'
SPIDER_MODULES = ['production.spiders']
NEWSPIDER_MODULE = 'production.spiders'
DEFAULT_ITEM_CLASS = 'production.items'
ROBOTSTXT_OBEY = True
IMAGES_STORE = '/Users/home/images'
DOWNLOAD_DELAY = 2
ITEM_PIPELINES = {'scrapy.pipelines.images.ImagesPipeline': 1}
# Disable cookies (enabled by default)
items.py
# -*- coding: utf-8 -*-
import scrapy
class ProductionItem(scrapy.Item):
img_url = scrapy.Field()
# ScrapingList Residential & Yield Estate for sale
class ListResidentialItem(scrapy.Item):
image_urls = scrapy.Field()
images = scrapy.Field()
class ImageItem(scrapy.Item):
image_urls = scrapy.Field()
images = scrapy.Field()
管道.py
import scrapy
from scrapy.pipelines.images import ImagesPipeline
from scrapy.exceptions import DropItem
class MyImagesPipeline(ImagesPipeline):
def get_media_requests(self, item, info):
for image_url in item['image_urls']:
yield scrapy.Request(image_url)
def item_completed(self, results, item, info):
image_paths = [x['path'] for ok, x in results if ok]
if not image_paths:
raise DropItem("Item contains no images")
item['image_paths'] = image_paths
return item