官方网站：https://www.mongodb.com
官方文档：https://docs.mongodb.com
GitHub：https://github.com/mongodb
中文教程：...id" : 2, "name" : "Google", "address" : "Google 搜索" }
{ "_id" : 3, "name" : "Facebook", "address" : "脸书..."_id": 2, "name": "Google", "address": "Google 搜索"},
{"_id": 3, "name": "Facebook", "address": "脸书...classmethod
def from_crawler(cls,crawler):
return cls(
mongo_uri=crawler.settings.get...('MONGO_URI'),
mongo_db=crawler.settings.get('MONGO_DB')
)
def open_spider(self
