scrapy下载图片

fishPicId = scrapy.Field()			#图片url地址。要是个列表
image_path = scrapy.Field()     	#->>保存img绝对路径。

item['fishPicId'] = [img_src]         # ImagesPipeline用到的是图片的url列表

ITEM_PIPELINES = {
   'LXSpider.pipelines.LxspiderPipeline': 300,
    'LXSpider.pipelines.DownloadImagesPipeline': 100
}

import os
IMAGES_URLS_FIELD ="fishPicId"                              #fishPicId：在items.py中配置的爬取得图片地址
project_dir = os.path.abspath(os.path.dirname(__file__))    #获取当前爬虫项目的绝对路径
IMAGES_STORE = os.path.join(project_dir,'images')         #组装新的图片路径,设置图片存储目录
# IMAGES_MIN_HEIGHT = 1                                   #设定下载图片的最小高度
# IMAGES_MIN_WIDTH = 1                                 #设定下载图片的最小宽度

'''保存图片绝对路径'''
from LXSpider.images.full import img_abspath
from scrapy.pipelines.images import ImagesPipeline
class DownloadImagesPipeline(ImagesPipeline):
    def item_completed(self, results, item, info):
        for ok, value in results:               # 通过断点可以看到图片路径存在results内
            image_file_path = img_abspath+str(value['path']).replace('/','\\')     # 将路径保存在item中返回
            item['image_path']=image_file_path
        return item