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| coding=utf-8
import requests
from retrying import retry
from lxml import etree
class Qiubai_spider():
def __init__(self):
self.url = "http://www.qiushibaike.com/8hr/page/{}/"
self.headers = {
"User-Agent":"Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1 Trident/5.0;"
}
@retry(stop_max_attempt_number=5) #调用retry，当assert出错时候，重复请求5次
def parse_url(self,url):
response = requests.get(url,timeout=10,headers=self.headers) #请求url
assert response.status_code==200 #当响应码不是200时候，做断言报错处理
print(url)
return etree.HTML(response.text) #返回etree之后的html
def parse_content(self,html):
item_temp = html.xpath("//div[@class='article block untagged mb15']")
print(len(item_temp))
for item in item_temp:
#获取用户头像地址
avatar = item.xpath("./div[1]/a[1]/img/@src")[0] if len(item.xpath("./div[1]/a[1]/img/@src"))>0 else None
#为头像地址添加前缀
if avatar is not None and not avatar.startswith("http:"):
avatar = "http:"+avatar
print(avatar)
name = item.xpath("./div[1]/a[2]/h2/text()")[0] #获取用户名
print(name)
content = item.xpath("./a[@class='contentHerf']/div/span/text()")[0] #获取内容
print(content)
star_number = item.xpath("./div[@class='stats']/span[1]/i/text()")[0] #获取点赞数
print(star_number)
comment_number = item.xpath("./div[@class='stats']/span[2]/a/i/text()")[0] #获取评论数
print(comment_number)
print("*"*100)
def run(self):
'''函数的主要逻辑实现
'''
url = self.url.format(1) #获取到url
html = self.parse_url(url) #请求url
self.parse_content(html) #解析页面内容并把内容存入内容队列
if __name__ == "__main__":
qiubai = Qiubai_spider()
qiubai.run()
|
