我试图通过Pymongo用一个废弃的管道连接到MongoDB,以便创建一个新的数据库,并用我刚刚刮来的内容填充它,但是我遇到了一个奇怪的问题。我遵循了基本教程并设置了两个命令行,一个用于在中运行scrapy,另一个用于运行mongod。不幸的是,当我在运行mongod之后运行crapy代码时,mongod似乎没有接收到我试图设置的crapy管道,只是维护了一个“等待端口27107上的连接”的通知。在
在命令行1(scray)中,我将目录设置为Documents/PyProjects/twitterBot/krugman
在命令行2(mongod)中,我将其设置为Documents/PyProjects/twitterBot
我使用的脚本如下: 克鲁格曼/克鲁格曼/蜘蛛/克鲁格蜘蛛.py(调出保罗·克鲁格曼的博客条目):
from scrapy import http
from scrapy.selector import Selector
from scrapy.spiders import CrawlSpider
import scrapy
import pymongo
import json
from krugman.items import BlogPost
class krugSpider(CrawlSpider):
name = 'krugbot'
start_url = ['https://krugman.blogs.nytimes.com']
def __init__(self):
self.url = 'https://krugman.blogs.nytimes.com/more_posts_jsons/page/{0}/?homepage=1&apagenum={0}'
def start_requests(self):
yield http.Request(self.url.format('1'), callback = self.parse_page)
def parse_page(self, response):
data = json.loads(response.body)
for block in range(len(data['posts'])):
for article in self.parse_block(data['posts'][block]):
yield article
page = data['args']['paged'] + 1
url = self.url.format(str(page))
yield http.Request(url, callback = self.parse_page)
def parse_block(self, content):
article = BlogPost(author = 'Paul Krugman', source = 'Blog')
paragraphs = Selector(text = str(content['html']))
article['paragraphs']= paragraphs.css('p.story-body-text::text').extract()
article['links'] = paragraphs.css('p.story-body-text a::attr(href)').extract()
article['datetime'] = content['post_date']
article['post_id'] = content['post_id']
article['url'] = content['permalink']
article['title'] = content['headline']
yield article
克鲁格曼/克鲁格曼/设置.py公司名称:
^{pr2}$克鲁格曼/克鲁格曼/管道.py在
from pymongo import MongoClient
from scrapy.conf import settings
from scrapy import log
class KrugmanPipeline(object):
def __init(self):
connection = MongoClient(settings['MONGODB_SERVER'], settings['MONGODB_PORT'])
db = connection[settings['MONGODB_DB']]
self.collection = db[settings['MONGODB_BLOG']]
def process_item(self, item, spider):
self.collection.insert_one(dict(item))
log.msg("Test this out")
return item
我没有收到任何错误消息,所以在故障排除方面遇到了困难。它似乎根本不肯开火。你知道我的问题是什么吗?在
在你的设置中,你没有添加MongoPipeline。在
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