神剑山庄资源网

scrapy利用selenium爬取豆瓣阅读的全步骤
脚本专栏 2024/11/17 佚名
2 0
神剑山庄资源网 Design By www.hcban.com

首先创建scrapy项目

命令：scrapy startproject douban_read

创建spider

命令：scrapy genspider douban_spider url

网址：https://read.douban.com/charts

关键注释代码中有，若有不足，请多指教

scrapy项目目录结构如下

scrapy利用selenium爬取豆瓣阅读的全步骤

douban_spider.py文件代码

爬虫文件

import scrapy
import re, json

from ..items import DoubanReadItem


class DoubanSpiderSpider(scrapy.Spider):
 name = 'douban_spider'
 # allowed_domains = ['www']
 start_urls = ['https://read.douban.com/charts']

 def parse(self, response):
 # print(response.text)
 # 获取图书分类的url
 type_urls = response.xpath('//div[@class="rankings-nav"]/a[position()>1]/@href').extract()
 # print(type_urls)
 for type_url in type_urls:
  # /charts"htmlcode">



# Define here the models for your scraped items
#
# See documentation in:
# https://docs.scrapy.org/en/latest/topics/items.html

import scrapy


class DoubanReadItem(scrapy.Item):
 # define the fields for your item here like:
 book_id = scrapy.Field()
 book_url = scrapy.Field()
 book_title = scrapy.Field()
 book_author = scrapy.Field()
 book_cover_image = scrapy.Field()
 book_abstract = scrapy.Field()
 book_wordCount = scrapy.Field()
 book_kinds = scrapy.Field()








my_download_middle.py文件代码


所有request都会经过下载中间件，可以通过定制中间件，来完成设置代理，动态设置请求头，自定义下载等操作





import random
import time
from selenium import webdriver
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
from scrapy.http.response.html import HtmlResponse


class MymiddleWares(object):
 def __init__(self):
 # 请求头列表
 self.USER_AGENT_LIST = [
  "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/22.0.1207.1 Safari/537.1",
  "Mozilla/5.0 (X11; CrOS i686 2268.111.0) AppleWebKit/536.11 (KHTML, like Gecko) Chrome/20.0.1132.57 Safari/536.11",
  "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.6 (KHTML, like Gecko) Chrome/20.0.1092.0 Safari/536.6",
  "Mozilla/5.0 (Windows NT 6.2) AppleWebKit/536.6 (KHTML, like Gecko) Chrome/20.0.1090.0 Safari/536.6",
  "Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/19.77.34.5 Safari/537.1",
  "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.9 Safari/536.5",
  "Mozilla/5.0 (Windows NT 6.0) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.36 Safari/536.5",
  "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1063.0 Safari/536.3",
  "Mozilla/5.0 (Windows NT 5.1) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1063.0 Safari/536.3",
  "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; SE 2.X MetaSr 1.0; SE 2.X MetaSr 1.0; .NET CLR 2.0.50727; SE 2.X MetaSr 1.0)",
  "Mozilla/5.0 (Windows NT 6.2) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1062.0 Safari/536.3",
  "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1062.0 Safari/536.3",
  "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; 360SE)",
  "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1061.1 Safari/536.3",
  "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1061.1 Safari/536.3",
  "Mozilla/5.0 (Windows NT 6.2) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1061.0 Safari/536.3",
  "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.24 (KHTML, like Gecko) Chrome/19.0.1055.1 Safari/535.24",
  "Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/535.24 (KHTML, like Gecko) Chrome/19.0.1055.1 Safari/535.24"
 ]

 def process_request(self, request, spider):
 '''
 下载中间件处理requests的方法
 :param request:马上要被下载器下载request
 :param spider:
 :return:
 '''
 # 在spider中设置了meta的request_type的值为ajax meta参数会贯穿整个scrapy
 request_type = request.meta.get('request_type')
 # 如果不是ajax请求就需要通过selenium来自定义下载request
 if not request_type:
  print('in middler')
  # 1、创建driver
  driver = webdriver.Chrome()
  # 2、请求url
  driver.get(request.url)
  # 3、等待
  # driver.implicitly_wait(20)
  time.sleep(3)
  # 4、获取页面内容
  html_str = driver.page_source
  # 直接返回HtmlResponse给spider解析 下载器就不会下载这个request 达到自定义下载的目的
  return HtmlResponse(url=request.url, body=html_str, request=request, encoding='utf-8')

 else:
  # 如果是ajax请求就需要通过scrapy下载器来下载request
  # ajax请求直接返回json数据不适合上面的selenium下载
  ua = random.choice(self.USER_AGENT_LIST)
  # 设置请求头
  if ua:
  request.headers.setdefault('User-Agent', ua)
  request.headers.setdefault('X-Requested-With', 'XMLHttpRequest')







pipeline.py文件代码


项目的管道文件





import pymongo
from itemadapter import ItemAdapter


class MongoPipeline:
 # 存储集合名字
 collection_name = 'book'

 def __init__(self, mongo_uri, mongo_db):
 self.mongo_uri = mongo_uri
 self.mongo_db = mongo_db

 @classmethod
 def from_crawler(cls, crawler):
 return cls(
  mongo_uri=crawler.settings.get('MONGO_URI'),
  mongo_db=crawler.settings.get('MONGO_DATABASE', 'items')
 )

 def open_spider(self, spider):
 '''
 当spider启动的时候调用
 :param spider:
 :return:
 '''
 self.client = pymongo.MongoClient(self.mongo_uri)
 self.db = self.client[self.mongo_db]

 def close_spider(self, spider):
 self.client.close()

 # 保存到mongo的douban_read数据库下的book集合中
 def process_item(self, item, spider):
 self.db[self.collection_name].update({'book_id': item['book_id']}, {'$set': dict(item)}, True)
 # True：有则修改 无则新增
 print(item)
 return item







settings.py文件代码


配置信息





 # Scrapy settings for douban_read project
#
# For simplicity, this file contains only settings considered important or
# commonly used. You can find more settings consulting the documentation:
#
# https://docs.scrapy.org/en/latest/topics/settings.html
# https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
# https://docs.scrapy.org/en/latest/topics/spider-middleware.html

BOT_NAME = 'douban_read'

SPIDER_MODULES = ['douban_read.spiders']
NEWSPIDER_MODULE = 'douban_read.spiders'


# Crawl responsibly by identifying yourself (and your website) on the user-agent
#USER_AGENT = 'douban_read (+http://www.yourdomain.com)'

# Obey robots.txt rules
# robot协议
ROBOTSTXT_OBEY = False

# Configure maximum concurrent requests performed by Scrapy (default: 16)
#CONCURRENT_REQUESTS = 32

# Configure a delay for requests for the same website (default: 0)
# See https://docs.scrapy.org/en/latest/topics/settings.html#download-delay
# See also autothrottle settings and docs
#DOWNLOAD_DELAY = 3
# The download delay setting will honor only one of:
#CONCURRENT_REQUESTS_PER_DOMAIN = 16
#CONCURRENT_REQUESTS_PER_IP = 16

# Disable cookies (enabled by default)
#COOKIES_ENABLED = False

# Disable Telnet Console (enabled by default)
#TELNETCONSOLE_ENABLED = False

# Override the default request headers:
# 默认请求头
DEFAULT_REQUEST_HEADERS = {
 'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
 'Accept-Language': 'en',
 'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.102 Safari/537.36',

}

# Enable or disable spider middlewares
# See https://docs.scrapy.org/en/latest/topics/spider-middleware.html
#SPIDER_MIDDLEWARES = {
# 'douban_read.middlewares.DoubanReadSpiderMiddleware': 543,
#}

# Enable or disable downloader middlewares
# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
# 配置下载器中间件
DOWNLOADER_MIDDLEWARES = {
 'douban_read.my_download_middle.MymiddleWares': 543,
}

# Enable or disable extensions
# See https://docs.scrapy.org/en/latest/topics/extensions.html
#EXTENSIONS = {
# 'scrapy.extensions.telnet.TelnetConsole': None,
#}

# Configure item pipelines
# See https://docs.scrapy.org/en/latest/topics/item-pipeline.html
# 配置ITEM_PIPELINES
ITEM_PIPELINES = {
 'douban_read.pipelines.MongoPipeline': 300,
}

# Enable and configure the AutoThrottle extension (disabled by default)
# See https://docs.scrapy.org/en/latest/topics/autothrottle.html
#AUTOTHROTTLE_ENABLED = True
# The initial download delay
#AUTOTHROTTLE_START_DELAY = 5
# The maximum download delay to be set in case of high latencies
#AUTOTHROTTLE_MAX_DELAY = 60
# The average number of requests Scrapy should be sending in parallel to
# each remote server
#AUTOTHROTTLE_TARGET_CONCURRENCY = 1.0
# Enable showing throttling stats for every response received:
#AUTOTHROTTLE_DEBUG = False

# Enable and configure HTTP caching (disabled by default)
# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html#httpcache-middleware-settings
#HTTPCACHE_ENABLED = True
#HTTPCACHE_EXPIRATION_SECS = 0
#HTTPCACHE_DIR = 'httpcache'
#HTTPCACHE_IGNORE_HTTP_CODES = []
#HTTPCACHE_STORAGE = 'scrapy.extensions.httpcache.FilesystemCacheStorage'

# 配置mongo
MONGO_URI = 'localhost'
# 创建数据库：douban_read
MONGO_DATABASE = 'douban_read'







最后启动该项目即可




scrapy crawl douban_spider




数据就保存到mongo数据库了


scrapy利用selenium爬取豆瓣阅读的全步骤


总结
标签：
selenium爬取数据,selenium爬取网页,scrapy,selenium爬取
神剑山庄资源网 Design By www.hcban.com
神剑山庄资源网 免责声明：本站文章均来自网站采集或用户投稿，网站不提供任何软件下载或自行开发的软件！ 如有用户或公司发现本站内容信息存在侵权行为，请邮件告知！ 858582#qq.com
神剑山庄资源网 Design By www.hcban.com

评论“scrapy利用selenium爬取豆瓣阅读的全步骤”

暂无scrapy利用selenium爬取豆瓣阅读的全步骤的评论...
www.hcban.com 神剑山庄资源网
139,976影音资源
144,792福利资源
21,817软件资源
631,128技术资源

《魔兽世界》大逃杀！60人新游玩模式《强袭风暴》3月21日上线

暴雪近日发布了《魔兽世界》10.2.6 更新内容，新游玩模式《强袭风暴》即将于3月21 日在亚服上线，届时玩家将前往阿拉希高地展开一场 60 人大逃杀对战。

艾泽拉斯的冒险者已经征服了艾泽拉斯的大地及遥远的彼岸。他们在对抗世界上最致命的敌人时展现出过人的手腕，并且成功阻止终结宇宙等级的威胁。当他们在为即将于《魔兽世界》资料片《地心之战》中来袭的萨拉塔斯势力做战斗准备时，他们还需要在熟悉的阿拉希高地面对一个全新的敌人──那就是彼此。在《巨龙崛起》10.2.6 更新的《强袭风暴》中，玩家将会进入一个全新的海盗主题大逃杀式限时活动，其中包含极高的风险和史诗级的奖励。

《强袭风暴》不是普通的战场，作为一个独立于主游戏之外的活动，玩家可以用大逃杀的风格来体验《魔兽世界》，不分职业、不分装备（除了你在赛局中捡到的），光是技巧和战略的强弱之分就能决定出谁才是能坚持到最后的赢家。本次活动将会开放单人和双人模式，玩家在加入海盗主题的预赛大厅区域前，可以从强袭风暴角色画面新增好友。游玩游戏将可以累计名望轨迹，《巨龙崛起》和《魔兽世界：巫妖王之怒 经典版》的玩家都可以获得奖励。

更新日志

友情链接

杰晶网络 DDR爱好者之家 桃源资源网 杰网资源 富贵资源网 南强小屋 铁雪资源网 幽灵资源网 万梅资源网 狼山资源网 白云岛资源网 昆仑资源网 相思资源网 明霞山资源网 内蒙古资源网 黑松山资源网 茶园资源网 饿虎岗资源网 大旗谷资源网 常春岛资源网 岱庙资源网 兴国资源网 快活林资源网 蝙蝠岛资源网 帝王谷资源网 白云城资源网 伏龙阁资源网 清风细雨楼 天枫庄资源网 圆月山庄资源网 无争山庄资源网 神水资源网 移花宫资源网 神剑山庄资源网 无为清净楼资源网 金钱帮资源网 丐帮资源网 华山资源网 极乐门资源网 小李飞刀资源网 凤求凰客栈 风云阁资源网 金狮镖局 鸳鸯亭资源网 千金楼资源网 更多链接
神剑山庄资源网 Design By www.hcban.com