# 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


# useful for handling different item types with a single interface
from itemadapter import ItemAdapter
import urllib.request

class ZhongtuwangPipeline:
    # 打开文件
    def open_spider(self, spider):
        self.fp = open('book.json', 'w', encoding='utf-8')

    # 写入内容
    def process_item(self, item, spider):
        self.fp.write(str(item))
        return item
#     关闭文件
    def close_spider(self,spider):
        self.fp.close()
class zhongwangDownloadPipeline:
    def process_item(self, item, spider):
        url =item.get('src')
        filename = 'images/' + item.get('name')[0].replace(':','：').replace('/','-').replace('?','！') + '.jpg'
        urllib.request.urlretrieve(url=url, filename=filename)
        print(filename)
        return item