scrapy-splash抓取动态数据例子八

# -*- coding: utf-8 -*-
import scrapy
from scrapy import Request
from scrapy.spiders import Spider
from scrapy_splash import SplashRequest
from scrapy_splash import SplashMiddleware
from scrapy.http import Request, HtmlResponse
from scrapy.selector import Selector
from scrapy_splash import SplashRequest
from splash_test.items import SplashTestItem
import IniFile
import sys
import os
import re
import time

reload(sys)
sys.setdefaultencoding(‘utf-8‘)

# sys.stdout = open(‘output.txt‘, ‘w‘)

class jiemianSpider(Spider):
    name = ‘jiemian‘

    configfile = os.path.join(os.getcwd(), ‘splash_test\spiders\setting.conf‘)

    cf = IniFile.ConfigFile(configfile)
    information_keywords = cf.GetValue("section", "information_keywords")
    information_wordlist = information_keywords.split(‘;‘)
    websearchurl = cf.GetValue("jiemian", "websearchurl")
    start_urls = []
    for word in information_wordlist:
        print websearchurl + word
        start_urls.append(websearchurl + word)

    # request需要封装成SplashRequest
    def start_requests(self):
        for url in self.start_urls:
            index = url.rfind(‘=‘)
            yield SplashRequest(url
                                , self.parse
                                , args={‘wait‘: ‘2‘},
                                meta={‘keyword‘: url[index + 1:]}
                                )

    def Comapre_to_days(self,leftdate, rightdate):
        ‘‘‘
        比较连个字符串日期，左边日期大于右边日期多少天
        :param leftdate: 格式：2017-04-15
        :param rightdate: 格式：2017-04-15
        :return: 天数
        ‘‘‘
        l_time = time.mktime(time.strptime(leftdate, ‘%Y-%m-%d‘))
        r_time = time.mktime(time.strptime(rightdate, ‘%Y-%m-%d‘))
        result = int(l_time - r_time) / 86400
        return result

    def date_isValid(self, strDateText):

        currentDate = time.strftime(‘%Y-%m-%d‘)
        datePattern = re.compile(r‘\d{4}-\d{1,2}-\d{1,2}‘)
        dt = strDateText.replace(‘/‘, ‘-‘)
        strDate = re.findall(datePattern, dt)
        if len(strDate) == 1:
            if self.Comapre_to_days(currentDate, strDate[0]) == 0:
                return True, currentDate
        return False, ‘‘

    def parse(self, response):
        site = Selector(response)

        sels = site.xpath(‘//div[contains(@class,"news-view")]‘)
        keyword = response.meta[‘keyword‘]
        item_list = []
        for sel in sels:
            dates = sel.xpath(‘.//div[@class="news-footer"]/p/span[2]/text()‘)
            flag,date =self.date_isValid(dates[0].extract())
            title = sel.xpath(‘.//div[@class="news-header"]/h3/a/@title‘)[0].extract()
            if  flag and title.find(keyword)>-1:
                it = SplashTestItem()
                it[‘title‘] = title
                it[‘url‘] = sel.xpath(‘.//div[@class="news-header"]/h3/a/@href‘)[0].extract()
                it[‘date‘] = date
                it[‘keyword‘] = keyword
                sources =sel.xpath(‘.//div[@class="news-footer"]/p/span[1]/a/text()‘)
                if len(sources)>0:
                    it[‘source‘] = sources[0].extract()
                item_list.append(it)
        return item_list