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jyhl 5 years ago
commit
abbcc28c46
  1. 19
      README.md
  2. 2
      requirements.dev.txt
  3. 26
      requirements.txt
  4. 1
      run.bat
  5. 2
      run.sh
  6. 11
      scrapy.cfg
  7. 0
      tutorial/__init__.py
  8. 14
      tutorial/items.py
  9. 144
      tutorial/middlewares.py
  10. 11
      tutorial/pipelines.py
  11. 92
      tutorial/settings.py
  12. 4
      tutorial/spiders/__init__.py
  13. 18
      tutorial/spiders/demo_spider.py
  14. 6
      useragents.txt

19
README.md

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## 安装pip
```
pip install -r requirements.txt
```
## 配置 tutorial/middlewares.py
```
# 代理服务器 (配置上对应信息)
proxyHost = "t.16yun.cn"
proxyPort = "31111"
# 代理隧道验证信息
proxyUser = "username"
proxyPass = "password"
```
##
```
./run.sh
```

2
requirements.dev.txt

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scrapy
scrapy-random-useragent

26
requirements.txt

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attrs==19.3.0
Automat==20.2.0
cffi==1.14.0
constantly==15.1.0
cryptography==2.9.2
cssselect==1.1.0
hyperlink==19.0.0
idna==2.9
incremental==17.5.0
lxml==4.5.0
parsel==1.5.2
Protego==0.1.16
pyasn1==0.4.8
pyasn1-modules==0.2.8
pycparser==2.20
PyDispatcher==2.0.5
PyHamcrest==2.0.2
pyOpenSSL==19.1.0
queuelib==1.5.0
Scrapy==2.1.0
scrapy-random-useragent==0.2
service-identity==18.1.0
six==1.14.0
Twisted==20.3.0
w3lib==1.21.0
zope.interface==5.1.0

1
run.bat

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scrapy crawl demo

2
run.sh

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#!/bin/bash
scrapy crawl demo

11
scrapy.cfg

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# Automatically created by: scrapy startproject
#
# For more information about the [deploy] section see:
# https://scrapyd.readthedocs.io/en/latest/deploy.html
[settings]
default = tutorial.settings
[deploy]
#url = http://localhost:6800/
project = tutorial

0
tutorial/__init__.py

14
tutorial/items.py

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# -*- coding: utf-8 -*-
# Define here the models for your scraped items
#
# See documentation in:
# https://doc.scrapy.org/en/latest/topics/items.html
import scrapy
class TutorialItem(scrapy.Item):
# define the fields for your item here like:
# name = scrapy.Field()
pass

144
tutorial/middlewares.py

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# -*- coding: utf-8 -*-
# Define here the models for your spider middleware
#
# See documentation in:
# https://doc.scrapy.org/en/latest/topics/spider-middleware.html
from scrapy import signals
# ! -*- encoding:utf-8 -*-
import base64
import sys
import random
PY3 = sys.version_info[0] >= 3
def base64ify(bytes_or_str):
if PY3 and isinstance(bytes_or_str, str):
input_bytes = bytes_or_str.encode('utf8')
else:
input_bytes = bytes_or_str
output_bytes = base64.urlsafe_b64encode(input_bytes)
if PY3:
return output_bytes.decode('ascii')
else:
return output_bytes
class ProxyMiddleware(object):
def process_request(self, request, spider):
# 代理服务器
proxyHost = "n10.t.16yun.cn"
proxyPort = "31111"
# 代理隧道验证信息
proxyUser = "username"
proxyPass = "password"
request.meta['proxy'] = "http://{0}:{1}".format(proxyHost, proxyPort)
# 添加验证头
encoded_user_pass = base64ify(proxyUser + ":" + proxyPass)
request.headers['Proxy-Authorization'] = 'Basic ' + encoded_user_pass
# 设置IP切换头(根据需求)
tunnel = random.randint(1, 10000)
request.headers['Proxy-Tunnel'] = str(tunnel)
class TutorialSpiderMiddleware(object):
# Not all methods need to be defined. If a method is not defined,
# scrapy acts as if the spider middleware does not modify the
# passed objects.
@classmethod
def from_crawler(cls, crawler):
# This method is used by Scrapy to create your spiders.
s = cls()
crawler.signals.connect(s.spider_opened, signal=signals.spider_opened)
return s
def process_spider_input(self, response, spider):
# Called for each response that goes through the spider
# middleware and into the spider.
# Should return None or raise an exception.
return None
def process_spider_output(self, response, result, spider):
# Called with the results returned from the Spider, after
# it has processed the response.
# Must return an iterable of Request, dict or Item objects.
for i in result:
yield i
def process_spider_exception(self, response, exception, spider):
# Called when a spider or process_spider_input() method
# (from other spider middleware) raises an exception.
# Should return either None or an iterable of Response, dict
# or Item objects.
pass
def process_start_requests(self, start_requests, spider):
# Called with the start requests of the spider, and works
# similarly to the process_spider_output() method, except
# that it doesn’t have a response associated.
# Must return only requests (not items).
for r in start_requests:
yield r
def spider_opened(self, spider):
spider.logger.info('Spider opened: %s' % spider.name)
class TutorialDownloaderMiddleware(object):
# Not all methods need to be defined. If a method is not defined,
# scrapy acts as if the downloader middleware does not modify the
# passed objects.
@classmethod
def from_crawler(cls, crawler):
# This method is used by Scrapy to create your spiders.
s = cls()
crawler.signals.connect(s.spider_opened, signal=signals.spider_opened)
return s
def process_request(self, request, spider):
# Called for each request that goes through the downloader
# middleware.
# Must either:
# - return None: continue processing this request
# - or return a Response object
# - or return a Request object
# - or raise IgnoreRequest: process_exception() methods of
# installed downloader middleware will be called
return None
def process_response(self, request, response, spider):
# Called with the response returned from the downloader.
# Must either;
# - return a Response object
# - return a Request object
# - or raise IgnoreRequest
return response
def process_exception(self, request, exception, spider):
# Called when a download handler or a process_request()
# (from other downloader middleware) raises an exception.
# Must either:
# - return None: continue processing this exception
# - return a Response object: stops process_exception() chain
# - return a Request object: stops process_exception() chain
pass
def spider_opened(self, spider):
spider.logger.info('Spider opened: %s' % spider.name)

11
tutorial/pipelines.py

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# -*- coding: utf-8 -*-
# Define your item pipelines here
#
# Don't forget to add your pipeline to the ITEM_PIPELINES setting
# See: https://doc.scrapy.org/en/latest/topics/item-pipeline.html
class TutorialPipeline(object):
def process_item(self, item, spider):
return item

92
tutorial/settings.py

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# -*- coding: utf-8 -*-
# Scrapy settings for tutorial project
#
# For simplicity, this file contains only settings considered important or
# commonly used. You can find more settings consulting the documentation:
#
# https://doc.scrapy.org/en/latest/topics/settings.html
# https://doc.scrapy.org/en/latest/topics/downloader-middleware.html
# https://doc.scrapy.org/en/latest/topics/spider-middleware.html
BOT_NAME = 'tutorial'
SPIDER_MODULES = ['tutorial.spiders']
NEWSPIDER_MODULE = 'tutorial.spiders'
# Crawl responsibly by identifying yourself (and your website) on the user-agent
#USER_AGENT = 'tutorial (+http://www.yourdomain.com)'
# Obey robots.txt rules
ROBOTSTXT_OBEY = True
DUPEFILTER_CLASS = 'scrapy.dupefilters.BaseDupeFilter'
# 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://doc.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:
#DEFAULT_REQUEST_HEADERS = {
# 'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
# 'Accept-Language': 'en',
#}
# Enable or disable spider middlewares
# See https://doc.scrapy.org/en/latest/topics/spider-middleware.html
#SPIDER_MIDDLEWARES = {
# 'tutorial.middlewares.TutorialSpiderMiddleware': 543,
#}
# Enable or disable downloader middlewares
# See https://doc.scrapy.org/en/latest/topics/downloader-middleware.html
DOWNLOADER_MIDDLEWARES = {
'tutorial.middlewares.ProxyMiddleware': 100,
'random_useragent.RandomUserAgentMiddleware': 400
}
USER_AGENT_LIST = "useragents.txt"
# Enable or disable extensions
# See https://doc.scrapy.org/en/latest/topics/extensions.html
#EXTENSIONS = {
# 'scrapy.extensions.telnet.TelnetConsole': None,
#}
# Configure item pipelines
# See https://doc.scrapy.org/en/latest/topics/item-pipeline.html
#ITEM_PIPELINES = {
# 'tutorial.pipelines.TutorialPipeline': 300,
#}
# Enable and configure the AutoThrottle extension (disabled by default)
# See https://doc.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://doc.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'

4
tutorial/spiders/__init__.py

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# This package will contain the spiders of your Scrapy project
#
# Please refer to the documentation for information on how to create and manage
# your spiders.

18
tutorial/spiders/demo_spider.py

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import scrapy
class DemoSpider(scrapy.Spider):
name = "demo"
def start_requests(self):
urls = [
'http://httpbin.org/ip',
'http://httpbin.org/ip',
'http://httpbin.org/headers',
]
for url in urls:
yield scrapy.Request(url=url, callback=self.parse)
def parse(self, response):
self.log('{}'.format(response.body))

6
useragents.txt

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Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.16) Gecko/20110319 Firefox/40
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 2.0.50727; QQBrowser/8.3.4769.400)
MozillaTest/5.0 (compatible; YodaoBot/1.0; http://www.yodao.com/help/webmaster/spider/; )
Mozilla/5.0 (Windows NT 6.2; rv:39.0) Gecko/20100101 Firefox/39.0
Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0; QQBrowser/8.3.4769.400)
Mozilla/5.0 (Windows NT 6.1; rv:39.0) Gecko/20100101 Firefox/39.0
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