def parse_job(self, response):
item_loader = ArticleItemLoader(item=LagouJobItem(), response=response)
item_loader.add_css("title", ".job-name span::text")
item_loader.add_value("url", response.url)
item_loader.add_css("salary", ".salary::text")
item_loader.add_xpath("job_city",
"//*[@class='job_request']/p/span[2]/text()")
item_loader.add_xpath("work_years",
"//*[@class='job_request']/p/span[3]/text()")
item_loader.add_xpath("degree_need",
"//*[@class='job_request']/p/span[4]/text()")
item_loader.add_xpath("job_type",
"//*[@class='job_request']/p/span[5]/text()")
item_loader.add_css("publish_time", ".publish_time::text")
item_loader.add_css("job_advantage", ".job-advantage p::text")
item_loader.add_css("job_desc", ".job_bt div")
item_loader.add_css("job_addr", ".work_addr")
item_loader.add_css("company_url", "#job_company dt a::attr(href)")
item_loader.add_css("company_name", "#job_company dt a div h2::text")
job_item = item_loader.load_item()
return job_item
def parse(self, response):
self.brower.get(response.url)
self.brower.execute_script("window.scrollTo(0,250)")
for i in range(1,16):
selector=self.brower.find_element_by_xpath("html/body/div[5]/div[1]/div[1]/div/ul/li[{0}]".format(i))
ActionChains(self.brower).move_to_element(selector).perform()
"""
1、获取当前页面
2、获取到下一页的Url 并交给scrapy下载 下载完成后交给Parse
"""
selectorRepnse=Selector(text=self.brower.page_source)
#self.brower.quit()
items_pop = selectorRepnse.css(".cate_detail_item")
for items in items_pop:
#主分类
pro = items.css(".cate_detail_tit_lk")
pro_name = pro.css("::text").extract_first("")
pro_url = parse.urljoin(response.url, pro.css("::attr(href)").extract_first(""))
links = items.css(".cate_detail_con_lk")
for link in links:
#次级分类
name = link.css("::text").extract_first("")
url = parse.urljoin(response.url,link.css("::attr(href)").extract_first(""))
#填充Item
item_loader = ArticleItemLoader(item=JDIndexItem(), response=response)
item_loader.add_value("index_name",str(name))
item_loader.add_value("url",str(url))
item_loader.add_value("pro_name",str(pro_name))
item_loader.add_value("pro_url",str(pro_url))
article_item = item_loader.load_item()
yield article_item
yield Request(url= url, meta={"name": name}, callback=self.parse_detail, dont_filter=True)
def parse_detail(self, response):
article_item = QiushibaikeItem()
# 通过item loader加载item
front_image_url = response.meta.get("front_image_url", "") # 文章封面图
flagTrue = response.meta.get("flag", "") # 标识
original = "http://www.tuicool.com/" + response.css("span.from a::attr(href)").extract_first("")
item_loader = ArticleItemLoader(item=QiushibaikeItem(), response=response)
item_loader.add_css("title", ".article_row_fluid div:nth-child(1) h1::text")
item_loader.add_value("url", response.url)
item_loader.add_value("url_object_id", get_md5(response.url))
item_loader.add_css("create_date", "span.timestamp::text")
item_loader.add_value("front_image_url", [front_image_url])
item_loader.add_value("sites", original)
item_loader.add_value("flag", flagTrue)
item_loader.add_css("original", "div.source a::text")
item_loader.add_css("tags", "span.new-label::text")
item_loader.add_css("content", "div.article_body")
article_item = item_loader.load_item()
yield article_item
def get_detail_use_item_loader(self, response):
'''
使用item_loader,这里得到的字段是列表
:return:
'''
article_item = JobBoleArticleItem()
item_loader = ArticleItemLoader(item=article_item, response=response)
item_loader.add_value("url", response.url)
item_loader.add_value("url_object_id", get_md5(response.url))
front_image_url = response.meta.get("front_image_url", "") # 文章封面图
item_loader.add_value("front_image_url", [front_image_url])
item_loader.add_xpath("title",
"//div[@class = 'entry-header']/h1/text()") # 标题
item_loader.add_xpath("create_date",
"//div[@class='entry-meta']/p/text()")
item_loader.add_xpath("praise_nums",
"//div[@class='post-adds']//h10/text()") # 点赞数
item_loader.add_xpath(
"fav_nums", "//div[@class='post-adds']/span[2]/text()") # 收藏数
item_loader.add_xpath(
"comment_nums",
"//span[@class='btn-bluet-bigger href-style hide-on-480']/text()"
) # 评论数
item_loader.add_xpath("content", "//div[@class='entry']") # 内容
item_loader.add_xpath(
"tags", "//p[@class='entry-meta-hide-on-mobile']/a/text()") # 内容
article_item = item_loader.load_item()
yield article_item
def parse_detail(self, response):
article_item = JobboleArticleItem()
# title = response.css('div.entry-header > h1::text').extract_first()
# create_date = response.css('.entry-meta-hide-on-mobile::text').extract_first().replace('·','').strip()
# praise_num = response.css('.post-adds .vote-post-up h10::text').extract_first(0)
front_img_url = response.meta.get('front_img_url', '')
#
# fav_num_info = response.css('.post-adds .bookmark-btn::text').extract_first()
# fav_num_re = re.match(".*(\d+).*", fav_num_info)
# if fav_num_re:
# fav_num = fav_num_re.group(1)
# else:
# fav_num = 0
# comment_num_info = response.css('a[href="#article-comment"] span::text').extract_first()
# comment_num_re = re.findall("\d+",comment_num_info)
# if comment_num_re:
# comment_num = comment_num_re[0]
# else:
# comment_num = 0
#
# tag_list = response.css('.entry-meta .entry-meta-hide-on-mobile a::text').extract()
# tags = ','.join([tag for tag in set(tag_list) if not tag.strip().endswith('评论')])
# content = response.css('.entry').extract_first()
#
# article_item['url_object_id'] = get_md5(response.url)
# article_item['url'] = response.url
# article_item['title'] = title
# try:
# create_date = datetime.strptime(create_date,'%Y/%m/%d').date()
# except Exception as e:
# create_date = datetime.now()
# article_item['create_date'] = create_date
# article_item['praise_num'] = praise_num
# article_item['fav_num'] = fav_num
# article_item['comment_num'] = comment_num
# article_item['front_img_url'] = [front_img_url]
# article_item['tags'] = tags
# article_item['content'] = content
#通过item loader价值item
item_loader = ArticleItemLoader(item=JobboleArticleItem(),
response=response)
item_loader.add_css('title', 'div.entry-header > h1::text')
item_loader.add_css('create_date', '.entry-meta-hide-on-mobile::text')
item_loader.add_css('praise_num', '.post-adds .vote-post-up h10::text')
item_loader.add_css('fav_num', '.post-adds .bookmark-btn::text') #re
item_loader.add_css('comment_num',
'a[href="#article-comment"] span::text') #re
item_loader.add_css(
'tag', '.entry-meta .entry-meta-hide-on-mobile a::text') #处理函数
item_loader.add_css('content', '.entry')
item_loader.add_value('front_img_url', [front_img_url])
item_loader.add_value('url', response.url)
item_loader.add_value('url_object_id', get_md5(response.url))
article_item = item_loader.load_item()
yield article_item
def parse_detail(self, response):
#article_item=JobBoleArticleItem()
# article_item['title']=response.xpath('//div[@class="entry-header"]/h1/text()').extract()[0]
# #
# # # 提取meta中的值,使用get方法遇到空的键值才不会报错,默认值为空,此处使用的是元祖非[]
# # # image的url要改为数组,不然在使用自动下载器会报错,即setting中的IMAGES_URLS_FILELD
# article_item['front_image_url']=[response.meta.get('front_image_url','')]
# date_time=re.match('.*?(\d{4}/\d+/\d+).*',response.xpath('//div/p[@class="entry-meta-hide-on-mobile"]/text()[1]').extract()[0])
# try:
# article_item['create_date']=datetime.datetime.strptime(date_time,'%Y/%m/%d').date()
# except Exception as e:
# article_item['create_date']=datetime.datetime.now().date()
# article_item['tag']=','.join(response.xpath('//div/p[@class="entry-meta-hide-on-mobile"]/a/text()').extract())
# article_item['content']=''.join(response.xpath('//div[@class="entry"]/p/text()').extract())
# article_item['praise_nums']=response.xpath('//div[@class="post-adds"]/span/h10/text()').extract()[0]
# fav_num=response.xpath('//div[@class="post-adds"]/span[2]/text()').extract()[0]
# match_re=re.match(".*?(\d+).*",fav_num)
# if match_re:
# article_item['fav_nums']=match_re.group(1)
# else:
# article_item['fav_nums']=0
# comment_num=response.xpath('//div[@class="post-adds"]/a/span/text()').extract()[0]
# match_re = re.match(".*?(\d+).*", comment_num)
# if match_re:
# article_item['comment_nums'] = match_re.group(1)
# else:
# article_item['comment_nums']=0
# article_item['url_object_id'] =common.get_md5(response.url)
# 使用ItemLoader加载item
#item_loader=ItemLoader(item=JobBoleArticleItem(),response=response)
# 使用自定义ArticleItemLoader
item_loader = ArticleItemLoader(item=JobBoleArticleItem(),
response=response)
item_loader.add_xpath('title',
'//div[@class="entry-header"]/h1/text()')
item_loader.add_xpath(
'tag', '//div/p[@class="entry-meta-hide-on-mobile"]/a/text()')
item_loader.add_value('front_image_url',
[response.meta.get('front_image_url', '')])
item_loader.add_value('url', response.url)
item_loader.add_xpath('content', '//div[@class="entry"]/p/text()')
item_loader.add_xpath('praise_nums',
'//div[@class="post-adds"]/span/h10/text()')
item_loader.add_xpath('comment_nums',
'//div[@class="post-adds"]/a/span/text()')
item_loader.add_xpath('fav_nums',
'//div[@class="post-adds"]/span[2]/text()')
item_loader.add_xpath(
'create_date',
'//div/p[@class="entry-meta-hide-on-mobile"]/text()[1]')
item_loader.add_value('url_object_id', common.get_md5(response.url))
article_item = item_loader.load_item()
yield article_item
pass
def parse_question(self, response):
zhihu_id = response.meta.get("question_id", "")
question_item_loader = ArticleItemLoader(item=ZhihuQuestionItem(),
response=response)
question_item_loader.add_css("title", "h1.QuestionHeader-title::text")
question_item_loader.add_css("content", ".QuestionHeader-detail")
question_item_loader.add_value("url", response.url)
question_item_loader.add_value("zhihu_id", zhihu_id)
question_item_loader.add_css("answer_num",
".List-headerText span::text")
question_item_loader.add_css("comments_num",
".QuestionHeader-Comment button::text")
question_item_loader.add_css("watch_user_num",
".NumberBoard-itemValue::text")
question_item_loader.add_css(
"topics", ".QuestionHeader-topics .Popover div::text")
question_item = question_item_loader.load_item()
yield scrapy.Request(self.start_answer_url.format(zhihu_id, 20, 0),
headers=self.headers,
callback=self.parse_answer)
yield question_item
def parse_content(self, response):
# 通过css选择器提取数据
# front_image_url = response.meta.get("front_image_url", "") #文章封面图
# title = response.css('.entry-header h1::text').extract_first()
# create_date = response.css('p.entry-meta-hide-on-mobile::text').extract_first().replace("·","").strip()
# praise_num = response.css('.vote-post-up h10::text').extract_first() #点赞数
# fav_num = response.css('.bookmark-btn::text').extract_first() #收藏数
# match_re = re.match(".*?(\d+).*", fav_num)
# if match_re:
# fav_num = int(match_re.group(1))
# else:
# fav_num = 0
# comments_num = response.css('a[href="#article-comment"] span::text').extract_first() # 评论数
# match_re = re.match(".*?(\d+).*", comments_num) # 正则获取字符串中的数字
# if match_re:
# comments_num = int(match_re.group(1))
# else:
# comments_num = 0
# content = response.css('div.entry').extract_first() # 正文
# tag_selecter = response.css('p.entry-meta-hide-on-mobile a::text').extract()
# tag_list = [element for element in tag_selecter if not element.strip().endswith('评论')]
# tags = ",".join(tag_list) # 标签
#
# article_item = JobboleArticleItem()
# article_item["title"] = title
# try:
# create_date = datetime.strptime(create_date, '%Y/%m/%d').date()
# except Exception as e:
# create_date = datetime.now().date()
# article_item["create_date"] = create_date
# article_item["url"] = response.url
# article_item["url_object_id"] = get_md5(response.url)
# article_item["front_image_url"] = [front_image_url]
# article_item["praise_nums"] = praise_num
# article_item["comment_nums"] = comments_num
# article_item["fav_nums"] = fav_num
# article_item["tags"] = tags
# article_item["content"] = content
# 通过item loader加载item 使用自定义的loader：ArticleItemLoader 由list变成str
front_image_url = response.meta.get("front_image_url", "") # 文章封面图
item_loader = ArticleItemLoader(item=JobboleArticleItem(), response = response)
item_loader.add_css("title", ".entry-header h1::text")
item_loader.add_css("create_date","p.entry-meta-hide-on-mobile::text")
item_loader.add_value("url", response.url)
item_loader.add_value("url_object_id", get_md5(response.url))
item_loader.add_value("front_image_url", [front_image_url])
item_loader.add_css("praise_nums", ".vote-post-up h10::text")
item_loader.add_css("comment_nums", "a[href='#article-comment'] span::text")
item_loader.add_css("fav_nums", ".bookmark-btn::text")
item_loader.add_css("tags", "p.entry-meta-hide-on-mobile a::text")
item_loader.add_css("content", "div.entry")
article_item = item_loader.load_item()
yield article_item
def parse_details(self, response):
"""
提取具体字段
"""
# # 通过CSS选择器提取文章的具体字段，并添加到item中
# title = response.css('.entry-header h1::text').extract_first()
# create_date = response.css('.entry-meta-hide-on-mobile::text').extract_first().replace('·', '').strip()
# # 数据库里定义的是date对象，所以这里要处理一下
# try:
# create_date = self.pares_ymd(create_date)
# except Exception as e:
# create_date = datetime.now().date()
# tag = response.css('.entry-meta-hide-on-mobile a::text').extract()[-1]
# front_image_url = response.meta.get("front_image_url", "")
# content = response.css("div.entry").extract_first()
# fav_nums = response.css(".bookmark-btn::text").extract()[0]
# match_re = re.match(".*?(\d+).*", fav_nums)
# if match_re:
# fav_nums = int(match_re.group(1))
# else:
# fav_nums = 0
#
# # item对应字段填充值
# article_item = JobBoleArticleItem()
# article_item["title"] = title
# article_item["url"] = response.url
# article_item["create_date"] = create_date
# article_item["url_object_id"] = get_md5(response.url)
# article_item["tag"] = tag
# article_item["front_image_url"] = [front_image_url]
# article_item["content"] = content
# article_item["fav_nums"] = fav_nums
# article_item["front_image_path"] = " "
# 通过item loader加载item
# 文章封面图
front_image_url = response.meta.get("front_image_url", "")
item_loader = ArticleItemLoader(item=JobBoleArticleItem(),
response=response)
item_loader.add_css("title", ".entry-header h1::text")
item_loader.add_css("create_date", ".entry-meta-hide-on-mobile::text")
item_loader.add_css("tag", ".entry-meta-hide-on-mobile a::text")
item_loader.add_css("content", "div.entry")
item_loader.add_css("fav_nums", ".bookmark-btn::text")
item_loader.add_value("front_image_url", [front_image_url])
item_loader.add_value("url", response.url)
item_loader.add_value("url_object_id", get_md5(response.url))
article_item = item_loader.load_item()
# 调用后传递到pipelines.py
yield article_item
def parse_detail(self, response):
item_loader = ArticleItemLoader(item=JobBoleArticleItem(), response=response)
# 通过item loader加载item
front_image_url = response.meta.get("front_image_url", "") # 文章封面图
item_loader.add_css("title", ".entry-header h1::text")
item_loader.add_value("url", response.url)
item_loader.add_value("url_object_id", cutils.get_md5(response.url))
item_loader.add_css("create_date", "p.entry-meta-hide-on-mobile::text")
item_loader.add_value("front_image_url", [front_image_url])
item_loader.add_css("praise_nums", ".vote-post-up h10::text")
item_loader.add_css("comment_nums", "a[href='#article-comment'] span::text")
item_loader.add_css("fav_nums", ".bookmark-btn::text")
item_loader.add_css("tags", "p.entry-meta-hide-on-mobile a::text")
item_loader.add_css("content", "div.entry")
yield item_loader.load_item()
def parse_detail(self, response):
# 通过itemloder
front_image_url = response.meta.get('front_image_url', '')
item_loader = ArticleItemLoader(item=JobBoleArticleItem(),
response=response)
item_loader.add_css('title', '.entry-header h1::text')
item_loader.add_value('url_object_id', get_md5(response.url))
item_loader.add_css('create_date', '.entry-meta-hide-on-mobile::text')
item_loader.add_value('url', response.url)
item_loader.add_value('front_image_url', [front_image_url])
item_loader.add_css('praise_num', '.vote-post-up h10::text')
item_loader.add_css('fav_num', '.bookmark-btn::text')
item_loader.add_css('com_num', "a[href='#article-comment'] span::text")
item_loader.add_css('content', 'div.entry')
item_loader.add_css('tags', 'p.entry-meta-hide-on-mobile a::text')
article_item = item_loader.load_item()
yield article_item
def parse_detail(self, response):
'''
解析文章详情
:param response:
:return:
'''
# 实例化item
article_item = JobBoleArticleItem()
# 使用xpath来获取数据
# #// *[ @ id = "post-114041"] / div[1] / h1
# title = response.xpath("//*[@id='post-114041']/div/h1/text()").extract_first("")
# create_date = response.xpath("//p[@class='entry-meta-hide-on-mobile']/text()").extract_first("").strip().replace("·","").strip()
# praise_nums = response.xpath("//span[contains(@class,'vote-post-up')]/h10/text()").extract_first("")
# fav_nums = response.xpath("//span[contains(@class,'bookmark-btn')]/text()").extract_first("")
# match_re = re.match(".*?(\d+).*", fav_nums)
# if match_re:
# fav_nums = match_re.group(1)
# comment_nums = response.xpath("//a[href='#article-comment']/span/text()").extract_first("")
# match_re = re.match(".*?(\d+).*", comment_nums)
# if match_re:
# comment_nums = match_re.group(1)
# content = response.xpath("//div[class='entry']").extract()extract_first("")
# tag_list = response.xpath("//p[@class='entry-meta-hide-on-mobile']/a/text()").extract_first("")
# tag_list = [element for element in tag_list if not element.strip().endswith("评论")]
# tags = ",".join(tag_list)
# 使用css选择器来获取数据
# extract_first函数:extract返回的是一个数组，数组有可能为空，所以取第0个值得时候会报错，调用这个函数可以在取不到值得时候给一个默认值
# title = response.css(".entry-header h1::text").extract_first("")
# create_date = response.css(".entry-meta-hide-on-mobile::text").extract_first("").strip().replace("·","").strip()
# praise_nums = response.css(".vote-post-up h10::text").extract_first("")
# fav_nums = response.css(".bookmark-btn::text").extract_first("")
# match_re = re.match(".*?(\d+).*", fav_nums)
# if match_re:
# fav_nums = int(match_re.group(1))
# else:
# fav_nums = 0
# comment_nums = response.css("a[href='#article-comment'] span::text").extract_first("")
# match_re = re.match(".*?(\d+).*", comment_nums)
# if match_re:
# comment_nums = int(match_re.group(1))
# else:
# comment_nums = 0
# content = response.css("div.entry").extract_first("")
# tag_list = response.css("p.entry-meta-hide-on-mobile a::text").extract()
# tag_list = [element for element in tag_list if not element.strip().endswith("评论")]
# tags = ",".join(tag_list)
front_image_url = response.meta.get("front_image_url", "")
# article_item["title"] = title
# article_item["url"] = response.url
# try:
# create_date = datetime.datetime.strptime(create_date, "%Y/%m/%d").date()
# except Exception as e:
# create_date = datetime.datetime.now().date()
# article_item["create_date"] = create_date
# article_item["front_image_url"] = [front_image_url]
# article_item["praise_nums"] = praise_nums
# article_item["comment_nums"] = comment_nums
# article_item["fav_nums"] = fav_nums
# article_item["tags"] = tags
# article_item["content"] = content
# article_item["url_object_id"] = get_md5(response.url)
# article_item["front_image_path"]
#通过item loader加载item
item_loader = ArticleItemLoader(item=JobBoleArticleItem(),
response=response)
item_loader.add_css("title", ".entry-header h1::text")
item_loader.add_css("create_date", ".entry-meta-hide-on-mobile::text")
item_loader.add_css("praise_nums", ".vote-post-up h10::text")
item_loader.add_css("fav_nums", ".bookmark-btn::text")
item_loader.add_css("comment_nums",
"a[href='#article-comment'] span::text")
item_loader.add_css("tags", "p.entry-meta-hide-on-mobile a::text")
item_loader.add_css("content", "div.entry")
item_loader.add_value("url", response.url)
item_loader.add_value("url_object_id", get_md5(response.url))
item_loader.add_value("front_image_url", [front_image_url])
article_item = item_loader.load_item()
yield article_item
def parse_detail(self, response):
#提取文章具体字段(xpath)
# title = response.xpath('//*[@id="post-113789"]/div[1]/h1/text()').extract()[0]
#
# create_date = response.xpath('//*[@id="post-113789"]/div[2]/p/text()[1]').extract()[0].strip().replace('·', '').strip()
#
# praise_nums = response.xpath('//*[@id="113789votetotal"]/text()').extract()
# if praise_nums:
# praise_nums = int(praise_nums[0])
# else:
# praise_nums = 0
#
# fav_nums = response.xpath('//*[@id="post-113789"]/div[3]/div[12]/span[2]/text()').extract()[0]
# match_re = re.match(r'.*?(\d+).*', fav_nums)
# if match_re:
# fav_nums = int(match_re.group(1))
# else:
# fav_nums = 0
#
# comment_nums = response.xpath('//*[@id="post-113789"]/div[3]/div[12]/a/span/text()').extract()[0]
# match_re = re.match(r'.*?(\d+).*', comment_nums)
# if match_re:
# comment_nums = int(match_re.group(1))
# else:
# comment_nums = 0
#
# content = response.xpath('//*[@id="post-113789"]/div[3]').extract()[0]
#
# tag_list = response.xpath('//*[@id="post-113789"]/div[2]/p/a/text()').extract()
# tag_list = [element for element in tag_list if not element.strip().endswith('评论')]
# tags = ','.join(tag_list)
#以下通过css选择器提取字段
# article_item = JobboleArticleItem() #实例化
#
# front_image_url = response.meta.get('front_image_url', '') #get key=front_image_url 的值，如果没有key=front_image_url，回传''(空)
# #文章封面图
#
# title = response.css('.entry-header h1::text').extract()[0]
#
# create_date = response.css('p.entry-meta-hide-on-mobile::text').extract()[0].strip().replace('·', '').strip()
#
# praise_nums = response.css('.vote-post-up h10::text').extract_first()
# if praise_nums:
# praise_nums = int(praise_nums[0])
# else:
# praise_nums = 0
#
# fav_nums = response.css('.bookmark-btn::text').extract()[0]
# match_re = re.match(r'.*?(\d+).*', fav_nums)
# if match_re:
# fav_nums = int(match_re.group(1))
# else:
# fav_nums = 0
#
# comment_nums = response.css("a[href='#article-comment'] span::text").extract()[0]
# match_re = re.match(r'.*?(\d+).*', comment_nums)
# if match_re:
# comment_nums = int(match_re.group(1))
# else:
# comment_nums = 0
#
# content = response.css("div.entry").extract()[0]
#
# tag_list = response.css("p.entry-meta-hide-on-mobile a::text").extract()
# tag_list = [element for element in tag_list if not element.strip().endswith('评论')]
# tags = ','.join(tag_list)
#
# #填充值到items
# article_item['title'] = title
# article_item['url'] = response.url
# article_item['url_object_id'] = get_md5(response.url) #对url做MD5
#
# try: #为了将文章的创建时间写入数据库，要把str类型的create_time转换为date类型
# create_date = datetime.datetime.strptime(create_date, '%Y/%m/%d').date() #将格式为%Y/%m/%d 的str类型转换为date类型
# except Exception as e:
# create_date = datetime.datetime.now().date()
# article_item['create_date'] = create_date
#
# article_item['front_image_url'] = [front_image_url] #images需要接受一个数组
# article_item['praise_nums'] = praise_nums
# article_item['fav_nums'] = fav_nums
# article_item['comment_nums'] = comment_nums
# article_item['tags'] = tags
# article_item['content'] = content
#通过itemLoader加载item
front_image_url = response.meta.get('front_image_url', '') #get key=front_image_url 的值，如果没有key=front_image_url，回传''(空)
#item_loader = ItemLoader(item=JobboleArticleItem(), response=response) #定义ItemLoader实例
item_loader = ArticleItemLoader(item=JobboleArticleItem(), response=response) #改用自定义的 ItemLoader
# ItemLoader.add_css(self, field_name, css)
# ItemLoader.add_xpath(self, field_name, xpath)
# ItemLoader._add_value(self, field_name, value)
item_loader.add_css("title", ".entry-header h1::text")
item_loader.add_value("url", response.url)
item_loader.add_value("url_object_id", get_md5(response.url))
item_loader.add_css("create_date", "p.entry-meta-hide-on-mobile::text")
item_loader.add_value("front_image_url", [front_image_url])
item_loader.add_css("praise_nums", ".vote-post-up h10::text")
item_loader.add_css("comment_nums", "a[href='#article-comment'] span::text")
item_loader.add_css("fav_nums", ".bookmark-btn::text")
item_loader.add_css("tags", "p.entry-meta-hide-on-mobile a::text")
item_loader.add_css("content", "div.entry")
article_item = item_loader.load_item()
#调用默认的item方法的话会有两个问题：1.值都是list 2.还需要对取出的值行进处理（做re的提取等）
#-->去修改items.py #1.在items.py 的Field()里面用TakeFirst进行处理 2.在items.py 的Field()里面用MapCompose进行处理
yield article_item #调用yield之后，item会传递到pipelines.py
def parse_comment(self, response):
#上个商品的url
detail_url = response.meta.get("detail_url", "")
#上个商品的外键
uid = response.meta.get("uid", "")
self.brower.get(detail_url)
self.brower.execute_script("window.scrollTo(0,1000)")
self.brower.find_element_by_css_selector("li[data-anchor=\"#comment\"]").click()
import time
time.sleep(2)
select=Selector(text=self.brower.page_source)
#商品简介
shopItems=select.css("ul.parameter2.p-parameter-list li")
shopMes=""
for shopItem in shopItems:
text=shopItem.css("::text").extract_first()
shopMes+=text+";"
buySourse=select.xpath(".//*[@id='buy-rate']/a/text()").extract_first("无购买指数")
#累计所占比例
items=""
buyItems=select.css("ul.filter-list li a")
for index in range(len(buyItems)):
items+=buyItems[index].css("::text").extract_first()
items+=buyItems[index].css("em::text").extract_first()+";"
#商品分数
goodtext=select.css("div.comment-percent strong.percent-tit::text").extract_first("未获取到!")
source=select.xpath(".//*[@id='comment']/div[2]/div[1]/div[1]/div/text()").extract_first("100")+"%"
#商品评价分数
shopSourse=goodtext+":"+source
shopMessage=select.css("div.tag-list span")
# 商品评价具体参数
ShopParameter=""
if shopMessage:
for shopmess in shopMessage:
ShopParameter+=shopmess.css("::text").extract_first()+";"
else:
ShopParameter = "暂无评论记录"
#添加数据
items_loder=ArticleItemLoader(item=JDCommentItem(),response=response)
items_loder.add_value("uid",uid)
items_loder.add_value("shopParams",shopMes)
items_loder.add_value("buy_sourse",buySourse)
items_loder.add_value("user_comment",items)
items_loder.add_value("good_sourse",shopSourse)
items_loder.add_value("user_comment_Detail",ShopParameter)
yield items_loder.load_item()
def parse_detail(self, response):
"""
提取文章的具体字段， 回调函数
:param response:
:return:
"""
article_item = JobBoleArticleItem()
# 文章封面图
front_image_url = response.meta.get("front_image_url", "")
"""
'''
# 方法一：【通过XPath提取字段】
# 可以在浏览器inspect html里copy Xpath
# chrome return 和 firefox return 可能不一样。 有时直接copy的值无法获得数据, 因为获取的是动态html而不是原始html
# 标题
# extract_first() 就是 extract()[0]，还可以传一个default值
title = response.xpath('//div[@class="entry-header"]/h1/text()').extract_first("")
# 创建时间
create_date = response.xpath('//p[@class="entry-meta-hide-on-mobile"]/text()').extract_first("").strip().replace("·", "").strip()
# 点赞数
vote_numbers = int(response.xpath('//span[contains(@class, "vote-post-up")]/h10/text()').extract_first(""))
# 收藏数
bookmark_numbers = response.xpath('//span[contains(@class, "bookmark-btn")]/text()').extract_first("")
match_re = re.match(r".*?(\d+).*", bookmark_numbers)
if match_re:
bookmark_numbers = match_re.group(1)
# 评论数
comment_numbers = response.xpath("//a[@href='#article-comment']/span/text()").extract_first("")
match_re = re.match(r".*?(\d+).*", comment_numbers)
if match_re:
comment_numbers = match_re.group(1)
# 正文 (不提取text而是提取整个html结构)
content = response.xpath("//div[@class='entry']").extract_first("")
# 标签
tags = response.xpath('//p[@class="entry-meta-hide-on-mobile"]/a/text()').extract()
tags = ','.join([item for item in tags if not item.strip().endswith('评论')])
'''
# 方法二：【通过CSS选择器提取字段】
# 标题
# ::text 代表去text
title = response.css(".entry-header h1::text").extract_first("")
# 创建时间
create_date = response.css('p.entry-meta-hide-on-mobile::text').extract_first("").strip().replace("·","").strip()
# 点赞数
vote_numbers = int(response.css(".vote-post-up h10::text").extract_first(""))
# 收藏数
bookmark_numbers = response.css(".bookmark-btn::text").extract_first("")
match_re = re.match(r".*?(\d+).*", bookmark_numbers)
if match_re:
bookmark_numbers = int(match_re.group(1))
else:
bookmark_numbers = 0
# 评论数
comment_numbers = response.css("a[href='#article-comment'] span::text").extract_first("")
match_re = re.match(r".*?(\d+).*", comment_numbers)
if match_re:
comment_numbers = int(match_re.group(1))
else:
comment_numbers = 0
# 正文 (不提取text而是提取整个html结构)
content = response.css("div.entry").extract_first("")
# 标签
tags = response.css('p.entry-meta-hide-on-mobile a::text').extract()
tags = ','.join([item for item in tags if not item.strip().endswith('评论')])
# 赋值生成item
article_item['url_object_id'] = get_md5(response.url)
article_item['title'] = title
article_item['url'] = response.url
try:
create_date = datetime.datetime.strptime(create_date, "%Y/%m/%d").date()
except Exception as e:
create_date = datetime.datetime.now().date()
article_item['create_date'] = create_date
# scrapy 的image下载接受的是数组
article_item['front_image_url'] = [front_image_url]
article_item['vote_numbers'] = vote_numbers
article_item['bookmark_numbers'] = bookmark_numbers
article_item['comment_numbers'] = comment_numbers
article_item['tags'] = tags
article_item['content'] = content
"""
# 通过item loader 加载 item
# 更加简洁可配置
item_loader = ArticleItemLoader(item=JobBoleArticleItem(), response=response)
item_loader.add_css("title", ".entry-header h1::text")
item_loader.add_value("url", response.url)
item_loader.add_value("url_object_id", get_md5(response.url))
item_loader.add_css("create_date", "p.entry-meta-hide-on-mobile::text")
item_loader.add_value("front_image_url", [front_image_url])
item_loader.add_css("vote_numbers", ".vote-post-up h10::text")
item_loader.add_css("bookmark_numbers", ".bookmark-btn::text")
item_loader.add_css("comment_numbers", "a[href='#article-comment'] span::text")
item_loader.add_css("tags", "p.entry-meta-hide-on-mobile a::text")
item_loader.add_css("content", "div.entry")
article_item = item_loader.load_item()
yield article_item
def parse_detail(self, response):
article_item = JobBoleArticleItem()
#提取文章的具体字段
# title = response.xpath('//div[@class="entry-header"]/h1/text()').extract_first("")
# create_date = response.xpath("//p[@class='entry-meta-hide-on-mobile']/text()").extract()[0].strip().replace("·","").strip()
# praise_nums = response.xpath("//span[contains(@class, 'vote-post-up')]/h10/text()").extract()[0]
# fav_nums = response.xpath("//span[contains(@class, 'bookmark-btn')]/text()").extract()[0]
# match_re = re.match(".*?(\d+).*", fav_nums)
# if match_re:
# fav_nums = match_re.group(1)
#
# comment_nums = response.xpath("//a[@href='#article-comment']/span/text()").extract()[0]
# match_re = re.match(".*?(\d+).*", comment_nums)
# if match_re:
# comment_nums = match_re.group(1)
#
# content = response.xpath("//div[@class='entry']").extract()[0]
#
# tag_list = response.xpath("//p[@class='entry-meta-hide-on-mobile']/a/text()").extract()
# tag_list = [element for element in tag_list if not element.strip().endswith("评论")]
# tags = ",".join(tag_list)
#通过css选择器提取字段
# front_image_url = response.meta.get("front_image_url", "") #文章封面图
# title = response.css(".entry-header h1::text").extract()[0]
# create_date = response.css("p.entry-meta-hide-on-mobile::text").extract()[0].strip().replace("·","").strip()
# praise_nums = response.css(".vote-post-up h10::text").extract()[0]
# fav_nums = response.css(".bookmark-btn::text").extract()[0]
# match_re = re.match(".*?(\d+).*", fav_nums)
# if match_re:
# fav_nums = int(match_re.group(1))
# else:
# fav_nums = 0
#
# comment_nums = response.css("a[href='#article-comment'] span::text").extract()[0]
# match_re = re.match(".*?(\d+).*", comment_nums)
# if match_re:
# comment_nums = int(match_re.group(1))
# else:
# comment_nums = 0
#
# content = response.css("div.entry").extract()[0]
#
# tag_list = response.css("p.entry-meta-hide-on-mobile a::text").extract()
# tag_list = [element for element in tag_list if not element.strip().endswith("评论")]
# tags = ",".join(tag_list)
#
# article_item["url_object_id"] = get_md5(response.url)
# article_item["title"] = title
# article_item["url"] = response.url
# try:
# create_date = datetime.datetime.strptime(create_date, "%Y/%m/%d").date()
# except Exception as e:
# create_date = datetime.datetime.now().date()
# article_item["create_date"] = create_date
# article_item["front_image_url"] = [front_image_url]
# article_item["praise_nums"] = praise_nums
# article_item["comment_nums"] = comment_nums
# article_item["fav_nums"] = fav_nums
# article_item["tags"] = tags
# article_item["content"] = content
#通过item loader加载item
front_image_url = response.meta.get("front_image_url", "") # 文章封面图
item_loader = ArticleItemLoader(item=JobBoleArticleItem(),
response=response)
item_loader.add_css("title", ".entry-header h1::text")
item_loader.add_value("url", response.url)
item_loader.add_value("url_object_id", get_md5(response.url))
item_loader.add_css("create_date", "p.entry-meta-hide-on-mobile::text")
item_loader.add_value("front_image_url", [front_image_url])
item_loader.add_css("praise_nums", ".vote-post-up h10::text")
item_loader.add_css("comment_nums",
"a[href='#article-comment'] span::text")
item_loader.add_css("fav_nums", ".bookmark-btn::text")
item_loader.add_css("tags", "p.entry-meta-hide-on-mobile a::text")
item_loader.add_css("content", "div.entry")
article_item = item_loader.load_item()
yield article_item
def parse_detail(self, response):
self.brower.get(response.url)
self.brower.execute_script("window.scrollTo(0,document.body.scrollHeight-1000)")
import time
time.sleep(2)
selecter=Selector(text=self.brower.page_source)
#解析详细 页
sort_name = response.meta.get("name", "")
# 通过Itemloder加载item
detail_items = selecter.css(".gl-i-wrap.j-sku-item")
for detail_item in detail_items:
uid = uuid.uuid4()
item_loder=ArticleItemLoader(item=JDDetailItem(),response=response)
url=parse.urljoin(response.url,detail_item.css("div.gl-i-wrap.j-sku-item div.p-img a::attr(href)").extract_first())
price=detail_item.css("div.p-price strong i::text").extract_first("")
name=detail_item.css("div.p-name em::text").extract_first("")
commit=detail_item.css("div.p-commit span.buy-score em::text").extract_first("暂无推荐指数")
type=detail_item.css("div.p-icons.J-pro-icons i::text").extract_first("")
shopname=detail_item.css("div.p-shop span a::text").extract_first("")
item_loder.add_value("uid",uid)
item_loder.add_value("url",url)
item_loder.add_value("price",price)
item_loder.add_value("jdname",name)
item_loder.add_value("jdcommit",commit)
item_loder.add_value("jdtype",type)
item_loder.add_value("shopname",shopname)
item_loder.add_value("sort_name",sort_name)
yield item_loder.load_item()
yield Request(url=url, meta={"detail_url":url,"uid":uid}, callback=self.parse_comment, dont_filter=True)
next_url= parse.urljoin(response.url, response.css(".pn-next::attr(href)").extract_first(""))
if next_url != "":
yield Request(url=next_url, callback=self.parse_detail, meta={"name": sort_name}, dont_filter=True)
def parse(self, response):
if response.status != 200 or len(response.text) == 0:
logger.error('Current response is invalid')
return
# 解析当前响应数据的标题
ArticlePage = response.xpath(
'//div[@class="grid-8"]/div[@class="post floated-thumb"]')
if ArticlePage is not None:
logger.info(
'Current artticle list len is {0} and type is {1}'.format(
len(ArticlePage), type(ArticlePage)))
# 解析
for Article in ArticlePage:
itemloader = ArticleItemLoader(response=response,
item=LpythonspiderItem())
articlethumb = Article.xpath(
'./div[@class="post-thumb"]/a/img/@src').extract()
if articlethumb is None:
logger.info('cur article no cover')
itemloader.add_value('thumb', 'No cover')
else:
itemloader.add_value('thumb', articlethumb)
articletitle = Article.xpath(
'./div[@class="post-meta"]/p/a[@class="archive-title"]/text()'
).extract()
itemloader.add_value('title', articletitle)
articledate = Article.xpath(
'./div[@class="post-meta"]/p/text()').extract()
itemloader.add_value('date', articledate)
articletype = Article.xpath(
'./div[@class="post-meta"]/p/a[@rel="category tag"]/text()'
).extract()
itemloader.add_value('type', articletype)
articlesummary = Article.xpath(
'./div[@class="post-meta"]/span[@class="excerpt"]/p/text()'
).extract()
itemloader.add_value('summary', articlesummary)
articlelink = Article.xpath(
'./div[@class="post-meta"]/p/a[@class="archive-title"]/@href'
).extract()
itemloader.add_value('link', articlelink)
articleobjectid = common.get_md5(articlelink)
itemloader.add_value('object_id', articleobjectid)
yield itemloader.load_item()
if self.already_push_all_request is not True:
page_list_html_a = response.xpath(
'//div[@class="grid-8"]/div[@class="navigation margin-20"]/a[@class="page-numbers"]'
)
last_page_list_html_a = page_list_html_a[-1]
last_page_index = last_page_list_html_a.xpath(
'text()').extract_first()
print(type(last_page_index))
last_index_number = int(last_page_index)
print last_index_number
format_url = 'http://python.jobbole.com/all-posts/page/{0}/'
next_page_index = 2
while next_page_index <= last_index_number:
next_page_request_url = format_url.format(next_page_index)
print(' will lpush to redis and url is %s' %
next_page_request_url)
yield Request(url=next_page_request_url)
next_page_index += 1
self.already_push_all_request = True
def parse_detail(self, response):
article_item = JobBoleArticleItem()
# xpath选择器,提取文章的具体字段
# title = response.xpath('//div[@class="entry-header"]/h1/text()').extract_first()
# creat_data = response.xpath('//p[@class="entry-meta-hide-on-mobile"]/text()').extract_first().strip().replace("·", "")
# praise_nums = response.xpath('//span[contains(@class,"vote-post-up")]/h10/text()').extract_first()
# fav_nums = response.xpath('//span[contains(@class,"bookmark-btn ")]/text()').extract_first()
# match_re = re.match(".*?(\d+).*", "fav_nums")
# if match_re:
# fav_nums = match_re.group(1)
# comment_nums = response.xpath('//a[@href="#article-comment"]/span/text()').extract_first()
# match_re = re.match(".*?(\d+).*", "comment_nums")
# if match_re:
# comment_nums = match_re.group(1)
# content = response.xpath('//div[@class="entry"]').extract_first()
# tag_list = response.xpath('//p[@class="entry-meta-hide-on-mobile"]/a/text()').extract()
# # endswith() 方法用于判断字符串是否以指定后缀结尾，如果以指定后缀结尾返回True，否则返回False
# tag_list = [element for element in tag_list if not element.strip().endswith("评论")]
# tags = ",".join(tag_list) # .join() 连接字符串数组,将字符串、元组、列表中的元素以指定的字符(分隔符)连接生成一个新的字符串
# # css选择器
# title = response.css('.entry-header h1::text').extract_first("")
# create_data = response.css('p.entry-meta-hide-on-mobile ::text').extract_first("").strip().replace("·", "")
# praise_nums = response.css('.vote-post-up h10::text').extract_first("")
# fav_nums = response.css('.bookmark-btn ::text').extract_first("")
# match_re = re.match(".*?(\d+).*", "fav_nums")
# if match_re:
# fav_nums = int(match_re.group(1))
# else:
# fav_nums = 0
# comment_nums = response.css('a[href="#article-comment"] ::text').extract_first("")
# match_re = re.match(".*?(\d+).*", "comment_nums")
# if match_re:
# comment_nums = int(match_re.group(1))
# else:
# comment_nums = 0
#
# content = response.css('.entry').extract_first("")
# tag_list = response.css('.entry-meta-hide-on-mobile a::text').extract()
# tag_list = [element for element in tag_list if not element.strip().endswith("评论")]
# tags = ",".join(tag_list)
#
# article_item["title"] = title
# article_item["url"] = response.url
# article_item["url_object_id"] = get_md5(response.url)
# # try:
# # create_data = datetime.datetime.strptime(create_data, "%Y/%m/%d").date()
# # except Exception as e:
# # create_data = datetime.datetime.now().date()
# article_item["create_data"] = create_data
# article_item["praise_nums"] = praise_nums
# article_item["fav_nums"] = fav_nums
# article_item["front_image_url"] = [front_image_url]
# article_item["comment_nums"] = comment_nums
# article_item["content"] = content
# article_item["tags"] = tags
# 通过item loader加载item
front_image_url = response.meta.get("front_image_url", "") # 文章封面图
item_loader = ArticleItemLoader(item=JobBoleArticleItem(), response=response)
item_loader.add_css("title", ".entry-header h1::text")
item_loader.add_value("url", response.url)
item_loader.add_value("url_object_id", get_md5(response.url))
item_loader.add_css("create_data", "p.entry-meta-hide-on-mobile ::text")
item_loader.add_value("front_image_url", [front_image_url])
item_loader.add_css("praise_nums", ".vote-post-up h10::text")
item_loader.add_css("fav_nums", ".bookmark-btn ::text")
item_loader.add_css("comment_nums", "a[href='#article-comment'] ::text")
item_loader.add_css("tags", ".entry-meta-hide-on-mobile a::text")
item_loader.add_css("content", ".entry")
article_item = item_loader.load_item()
yield article_item
def parse_detail(self, response):
# 提取文章的具体字段
article_item = JobboleArticleItem()
# 图片
image = response.meta.get("front_img", "")
#
# # 标题
# title = response.xpath("//div[@class='entry-header']/h1/text()")
# title_result = title.extract_first("")
# # 创建时间
# create_date = response.xpath("//p[@class='entry-meta-hide-on-mobile']/text()")
# create_date_result = create_date.extract()[0].replace("·", "").strip()
# # 点赞数
# praise_num = response.xpath("//span[contains(@class,'vote-post-up')]/h10/text()")
# praise_num_result = int(praise_num.extract()[0])
# # 收藏数
# fav_num = response.xpath("//span[contains(@class,'bookmark-btn')]/text()")
# match_re = re.match(r".*?(\d+).*", fav_num.extract()[0])
# if match_re:
# fav_num = int(match_re.group(1))
# else:
# fav_num = 0
#
# # 评论数
# comment_num = response.xpath("//a[@href='#article-comment']/span/text()")
# match_re = re.match(".*?(\d+).*", comment_num.extract()[0])
# if match_re:
# comment_num = int(match_re.group(1))
# else:
# comment_num = 0
# # 文章内容
# # article_content=response.xpath("//")
# content = response.xpath("//div[@class='entry']//text()").extract()
# content_data = response.xpath("//p[@class='entry-meta-hide-on-mobile']/a/text()").extract()
# content_key = [content_key for content_key in content_data if not content_key.strip().endswith("评论")]
# content_keys = ','.join(content_key)
#
# article_item['url'] = response.url
# article_item['url_object_id'] = get_md5(response.url)
# article_item['front_img_url'] = [image]
# article_item['title'] = title_result
# try:
# create_date_result = datetime.datetime.strptime(create_date_result, '%Y/%m/%d').date()
# except Exception as e:
# create_date_result = datetime.datetime.now()
# article_item['create_time'] = create_date_result
# article_item['praise_num'] = praise_num_result
# article_item['fav_num'] = fav_num
# article_item['comment_num'] = comment_num
# article_item['content'] = content
# article_item['tags'] = content_keys
# 通过item loader 加载item
item_loader = ArticleItemLoader(item=JobboleArticleItem(), response=response)
item_loader.add_value('url', response.url)
item_loader.add_value("url_object_id", get_md5(response.url))
item_loader.add_value("front_img_url", [image])
item_loader.add_xpath("title", "//div[@class='entry-header']/h1/text()")
item_loader.add_xpath("create_time", "//p[@class='entry-meta-hide-on-mobile']/text()")
item_loader.add_xpath("praise_num", "//span[contains(@class,'vote-post-up')]/h10/text()")
item_loader.add_xpath("fav_num", "//span[contains(@class,'bookmark-btn')]/text()")
item_loader.add_xpath("comment_num", "//a[@href='#article-comment']/span/text()")
item_loader.add_xpath("content", "//div[@class='entry']//text()")
item_loader.add_xpath("tags", "//p[@class='entry-meta-hide-on-mobile']/a/text()")
article_item= item_loader.load_item()
yield article_item