我正在学习 Python 和 Scrapy,并且正在学习如何使用它下载图像。我现在有点卡住了,我无法弄清楚真正的问题是什么。
运行蜘蛛时收到此错误消息
<None>: Unsupported URL scheme '': no handler available for that scheme
和
[imageflip] WARNING: File (unknown-error): Error downloading image from <GET
请在此处查看我的 pipelines.py
import scrapy
from scrapy.contrib.pipeline.images import ImagesPipeline
from scrapy.exceptions import DropItem
class PriceoflipkartPipeline(object):
def process_item(self, item, spider):
return item
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
请在此处查看我的 settings.py
SPIDER_MODULES = ['PriceoFlipkart.spiders']
NEWSPIDER_MODULE = 'PriceoFlipkart.spiders'
ITEM_PIPELINES = ['scrapy.contrib.pipeline.images.ImagesPipeline']
IMAGES_STORE = 'D:\PriceoFlipkart\Images'
IMAGES_EXPIRES = 90
请在这里查看我的蜘蛛
import scrapy
from PriceoFlipkart.items import PriceoflipkartItem
class FlipkartSpider(scrapy.Spider):
name = "imageflip"
allowed_domains = ["flipkart.com"]
start_urls = [
"http://www.flipkart.com/moto-g-2nd-gen/p/itme5z8n9mt77ajr?pid=MOBDYGZ6SHNB7RFC&srno=b_1&ref=06f4e48c-9548-45fa-b3ac-fa5fdf0e0d22"
]
def parse(self, response):
for sel in response.xpath('//body'):
item = PriceoflipkartItem()
item['image_urls'] = sel.select('//img[@class="productImage current"]').extract()
yield item
在我的 item.py 中,我添加了以下代码
image_urls = scrapy.Field()
images = scrapy.Field()
请告诉我如何正确配置它以便下载图像。我在 Windows 8 机器上。先感谢您。