一、介绍
本例子用scrapy-splash抓取界面网站给定关键字抓取咨询信息。
给定关键字：个性化；融合；电视
抓取信息内如下：
1、资讯标题
2、资讯链接
3、资讯时间
4、资讯来源
二、网站信息
三、数据抓取
针对上面的网站信息，来进行抓取
1、首先抓取信息列表
抓取代码：sels = site.xpath('//div[contains(@class,"news-view")]')
2、抓取标题
抓取代码：title = sel.xpath('.//div[@class="news-header"]/h3/a/@title')[0].extract()
3、抓取链接
抓取代码：it['url'] = sel.xpath('.//div[@class="news-header"]/h3/a/@href')[0].extract()
4、抓取日期
抓取代码：dates = sel.xpath('.//div[@class="news-footer"]/p/span[2]/text()')
5、抓取来源
抓取代码：sources =sel.xpath('.//div[@class="news-footer"]/p/span[1]/a/text()')
四、完整代码
# -*- coding: utf-8 -*-import scrapyfrom scrapy import Requestfrom scrapy.spiders import Spiderfrom scrapy_splash import SplashRequestfrom scrapy_splash import SplashMiddlewarefrom scrapy.http import Request, HtmlResponsefrom scrapy.selector import Selectorfrom scrapy_splash import SplashRequestfrom splash_test.items import SplashTestItemimport IniFileimport sysimport osimport reimport timereload(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 + wordstart_urls.append(websearchurl + word)# request需要封装成SplashRequestdef 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：-04-15:param rightdate: 格式：-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) / 86400return resultdef date_isValid(self, strDateText):currentDate = time.strftime('%Y-%m-%d')datePattern = pile(r'\d{4}-\d{1,2}-\d{1,2}')dt = strDateText.replace('/', '-')strDate = re.findall(datePattern, dt)if len(strDate) == 1:if apre_to_days(currentDate, strDate[0]) == 0:return True, currentDatereturn 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'] = titleit['url'] = sel.xpath('.//div[@class="news-header"]/h3/a/@href')[0].extract()it['date'] = dateit['keyword'] = keywordsources =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
