# -*- coding: utf-8 -*-import scrapyfrom Tencent.items import TencentItem#创建爬虫类class TencentspiderSpider(scrapy.Spider):    name = 'tencentSpider'#爬虫名字    allowed_domains = ['tencent.com']#容许爬虫的作用范围    # 定义开始的URL    offset = 0    url = 'https://hr.tencent.com/position.php?&start='    #urll='#a'    start_urls = [url + str(offset)]  # 爬虫开始的URL    def parse(self, response):        # 继承        item = TencentItem()        # 根节点        movies = response.xpath("//tr[@class='odd']|//tr[@class='even']")        for each in movies:            item['zhiwei']=each.xpath(".//td[@class='l square']/a/text()").extract()[0]            item['lianjie'] = each.xpath(".//td[@class='l square']/a/@href").extract()[0]            #item['leibie'] = each.xpath("//tr[@class='odd']/td[2]/text()|//tr[@class='even']/td[2]/text()").extract()[0]            item['leibie'] = each.xpath("//tr[@class='odd']/td[2]/text()|//tr[@class='even']/td[2]/text()").extract()[0]            #data = response.xpath(".//tr[@class='odd']/td[2]|//tr[@class='even']/td[2][descendant-or-self::text()]")            #item['leibie'] = data.xpath('string(.)').extract()            item['renshu'] = each.xpath("//tr[@class='odd']/td[3]/text()|//tr[@class='even']/td[3]/text()").extract()[0]            item['didian'] = each.xpath("//tr[@class='odd']/td[4]/text()|//tr[@class='even']/td[4]/text()").extract()[0]            item['shijian'] = each.xpath("//tr[@class='odd']/td[5]/text()|//tr[@class='even']/td[5]/text()").extract()[0]            # 异常处理            #if len(quote) != 0:                #item['quote'] = quote[0]            print(item)            yield item        if self.offset < 2840:            self.offset += 10            # 每次处理完一页之后，重新发送下一页请求            # self offset 自增25，同时拼接为新的URL并调用回调函数，self parse 处理response        yield scrapy.Request(self.url + str(self.offset),callback=self.parse)

# -*- coding: utf-8 -*-# Define here the models for your scraped items## See documentation in:# https://doc.scrapy.org/en/latest/topics/items.htmlimport scrapyclass TencentItem(scrapy.Item):    # define the fields for your item here like:    # name = scrapy.Field()    zhiwei = scrapy.Field()    lianjie = scrapy.Field()    leibie = scrapy.Field()    renshu = scrapy.Field()    didian = scrapy.Field()    shijian = scrapy.Field()

from scrapy import cmdline#cmdline.execute("scrapy crawl tencentSpider".split())

# -*- coding: utf-8 -*-# Define here the models for your spider middleware## See documentation in:# https://doc.scrapy.org/en/latest/topics/spider-middleware.htmlfrom scrapy import signalsclass TencentSpiderMiddleware(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 TencentDownloaderMiddleware(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)

# -*- coding: utf-8 -*-# Define your item pipelines here#Tencent.json#class TencentPipeline(object):# Don't forget to add your pipeline to the ITEM_PIPELINES setting# See: https://doc.scrapy.org/en/latest/topics/item-pipeline.htmlimport jsonfrom openpyxl import Workbookclass TencentPipeline(object):    wb = Workbook()    ws = wb.active    # 设置表头    ws.append(['职位', '链接', '类型', '人数', '地点', '时间'])    def process_item(self, item, spider):        # 添加数据        line = [item['zhiwei'],item['lianjie'],item['leibie'],item['renshu'],item['didian'],item['shijian']]        self.ws.append(line)  # 按行添加        self.wb.save('tencentSpider.xlsx')        return item

# -*- coding: utf-8 -*-# Scrapy settings for Tencent 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.htmlBOT_NAME = 'Tencent'SPIDER_MODULES = ['Tencent.spiders']NEWSPIDER_MODULE = 'Tencent.spiders'# Crawl responsibly by identifying yourself (and your website) on the user-agentUSER_AGENT = 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36'# Obey robots.txt rules#ROBOTSTXT_OBEY = True# 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 = {#    'Tencent.middlewares.TencentSpiderMiddleware': 543,#}# Enable or disable downloader middlewares# See https://doc.scrapy.org/en/latest/topics/downloader-middleware.html#DOWNLOADER_MIDDLEWARES = {#    'Tencent.middlewares.TencentDownloaderMiddleware': 543,#}# 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.htmlITEM_PIPELINES = {    'Tencent.pipelines.TencentPipeline': 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'