# -*- coding: utf-8 -*-
# Scrapy settings for scrapyseleniumtest project
#
# For simplicity, this file contains only settings considered important or
# commonly used. You can find more settings consulting the documentation:
#
# http://doc.scrapy.org/en/latest/topics/settings.html
# http://scrapy.readthedocs.org/en/latest/topics/downloader-middleware.html
# http://scrapy.readthedocs.org/en/latest/topics/spider-middleware.html
BOT_NAME = 'scrapyseleniumtest'
SPIDER_MODULES = ['scrapyseleniumtest.spiders']
NEWSPIDER_MODULE = 'scrapyseleniumtest.spiders'
MONGO_URI = 'localhost'
MONGO_DB = 'taobao2'
KEYWORDS = ['iPad']
MAX_PAGE = 2
SELENIUM_TIMEOUT = 20
PHANTOMJS_SERVICE_ARGS = ['--load-images=false', '--disk-cache=true']
# Crawl responsibly by identifying yourself (and your website) on the user-agent
#USER_AGENT = 'scrapyseleniumtest (+http://www.yourdomain.com)'
# Obey robots.txt rules
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 http://scrapy.readthedocs.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 http://scrapy.readthedocs.org/en/latest/topics/spider-middleware.html
#SPIDER_MIDDLEWARES = {
# 'scrapyseleniumtest.middlewares.ScrapyseleniumtestSpiderMiddleware': 543,
#}
# Enable or disable downloader middlewares
# See http://scrapy.readthedocs.org/en/latest/topics/downloader-middleware.html
DOWNLOADER_MIDDLEWARES = {
'scrapyseleniumtest.middlewares.SeleniumMiddleware': 543,
}
# Enable or disable extensions
# See http://scrapy.readthedocs.org/en/latest/topics/extensions.html
#EXTENSIONS = {
# 'scrapy.extensions.telnet.TelnetConsole': None,
#}
# Configure item pipelines
# See http://scrapy.readthedocs.org/en/latest/topics/item-pipeline.html
ITEM_PIPELINES = {
'scrapyseleniumtest.pipelines.MongoPipeline': 300,
}
# Enable and configure the AutoThrottle extension (disabled by default)
# See http://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 http://scrapy.readthedocs.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'
# -*- coding: utf-8 -*-
# Define here the models for your spider middleware
#
# See documentation in:
# http://doc.scrapy.org/en/latest/topics/spider-middleware.html
from scrapy import signals
class ScrapyseleniumtestSpiderMiddleware(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)
from selenium import webdriver
from selenium.common.exceptions import TimeoutException
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from scrapy.http import HtmlResponse
from logging import getLogger
class SeleniumMiddleware():
def __init__(self, timeout=None, service_args=[]):
self.logger = getLogger(__name__)
self.timeout = timeout
self.browser = webdriver.PhantomJS(service_args=service_args)
self.browser.set_window_size(1400, 700)
self.browser.set_page_load_timeout(self.timeout)
self.wait = WebDriverWait(self.browser, self.timeout)
def __del__(self):
self.browser.close()
def process_request(self, request, spider):
"""
用PhantomJS抓取页面
:param request: Request对象
:param spider: Spider对象
:return: HtmlResponse
"""
self.logger.debug('PhantomJS is Starting')
# 得到的是个int型的整数
page = request.meta.get('page', 1)
print('-----------------',page,'-----------------------------')
print('------------------',type(page),'-----------------------------')
try:
self.browser.get(request.url)
print('------------------', request.url,
'-----------------------------')
if page > 1:
# 从第二页开始就要等待页面加载了
# Presence_of_all_elements_located 判断一组元素是否存在
input = self.wait.until(
EC.presence_of_element_located((By.CSS_SELECTOR, '#mainsrp-pager div.form > input')))
# Element_to_be_clickable 判断元素是否点击,它处于可见和启动状态
submit = self.wait.until(
EC.element_to_be_clickable((By.CSS_SELECTOR, '#mainsrp-pager div.form > span.btn.J_Submit')))
input.clear()
# 输入第几页
input.send_keys(page)
submit.click()
# Text_to_be_present_in_element 判断元素是否有xx文本信息
self.wait.until(EC.text_to_be_present_in_element((By.CSS_SELECTOR, '#mainsrp-pager li.item.active > span'), str(page)))
# Presence_of_all_elements_located 判断一组元素是否存在
# 检测每一个item是否加载出来了
self.wait.until(EC.presence_of_element_located((By.CSS_SELECTOR, '.m-itemlist .items .item')))
return HtmlResponse(url=request.url, body=self.browser.page_source, request=request, encoding='utf-8', status=200)
except TimeoutException:
return HtmlResponse(url=request.url, status=500, request=request)
# 类方法 感觉就是获取setting里面的数据 在这里调用
# 得到数据之后变成类变量
@classmethod
def from_crawler(cls, crawler):
return cls(timeout=crawler.settings.get('SELENIUM_TIMEOUT'),
service_args=crawler.settings.get('PHANTOMJS_SERVICE_ARGS'))
# -*- coding: utf-8 -*-
# Define here the models for your scraped items
#
# See documentation in:
# http://doc.scrapy.org/en/latest/topics/items.html
import scrapy
from scrapy import Field
class ScrapyseleniumtestItem(scrapy.Item):
# define the fields for your item here like:
# name = scrapy.Field()
collection = 'products'
image = Field()
price = Field()
deal = Field()
title = Field()
shop = Field()
location = Field()
# -*- coding: utf-8 -*-
# Define your item pipelines here
#
# Don't forget to add your pipeline to the ITEM_PIPELINES setting
# See: http://doc.scrapy.org/en/latest/topics/item-pipeline.html
class ScrapyseleniumtestPipeline(object):
def process_item(self, item, spider):
return item
import pymongo
class MongoPipeline(object):
#collection_name = 'scrapy_items'
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_DB')
)
def open_spider(self, spider):
self.client = pymongo.MongoClient(self.mongo_uri)
self.db = self.client[self.mongo_db]
def close_spider(self, spider):
self.client.close()
def process_item(self, item, spider):
#
# item.__class__.__name__ 输出的item的类名
name = item.__class__.__name__
print('---------------name', name, '-------------------')
self.db[name].insert(dict(item))
#self.db[item.collection].insert(dict(item))
return item