爬取校园新闻首页的新闻

1. 用requests库和BeautifulSoup库，爬取校园新闻首页新闻的标题、链接、正文、show-info。

2. 分析info字符串，获取每篇新闻的发布时间，作者，来源，摄影等信息。

import requests
import string
newsurl='http://news.gzcc.cn/html/xiaoyuanxinwen/'
res = requests.get(newsurl) #返回response对象
res.encoding='utf-8'
from bs4 import BeautifulSoup
soup = BeautifulSoup(res.text,'html.parser')

def getNewsId(url):
#使用正则表达式获得新闻编号
newsId = re.findall(r'\_(.*).html', url)[0][-4:]
#生成点击次数的Request URL
clickUrl = 'http://oa.gzcc.cn/api.php?op=count&id={}&modelid=80'.format(newsId)
clickRes = requests.get(clickUrl)
# 利用正则表达式获取新闻点击次数
clickCount = int(re.search("hits').html('(.*)');", clickRes.text).group(1))
return clickCount

def getNewDetail(newsUrl):
# 读取新闻详情
resDescript = requests.get(newsUrl)
resDescript.encoding = "utf-8"
soupDescript = BeautifulSoup(resDescript.text, 'html.parser')

content = soupDescript.select(".show-content")[0].text # 正文
info = soupDescript.select(".show-info")[0].text # info相关内容
time = re.search("发布时间:(.*) xa0xa0 xa0xa0作者：", info).group(1)
author = re.search("作者：(.*)xa0xa0审核：", info).group(1)
right = re.search("审核：(.*)xa0xa0来源：", info).group(1)
resource = re.search('来源：(.*)xa0xa0xa0xa0摄影：', info).group(1)
video = re.search("摄影：(.*)xa0xa0xa0xa0点击：", info).group(1)
# 调用getNewsId()获取点击次数
count = getNewsId(newsUrl)
# 用datetime将时间字符串转换为datetime类型
dateTime = datetime.strptime(time, '%Y-%m-%d %H:%M:%S')

print('标题' + ': ' + title)
print('概要' + ': ' + description)
print('链接' + ': ' + a)
print('正文' + ' :' + content)
print('发布时间：{0} 作者：{1} 审核：{2} 来源：{3} 摄影：{4} 点击次数：{5}'.format(dateTime, author, right, resource, video,count))
print(" ")

# print(soup)
# for i in soup.select('.news-list-title'):
#     print(i)
# for k in soup.select('.news-list-description'):
#     print(k)
# for j in soup.find_all('a'):
#  print(j['href'])
# print(soup.select('li')[10].a.attrs['href'])

for news in soup.select('li'):
    if len(news.select('.news-list-title'))>0:
        t=news.select('.news-list-title')[0].text
        d=news.select('.news-list-description')[0].text
        a=news.a.attrs['href']
        res = requests.get(a)  # 返回response对象
        res.encoding = 'utf-8'
        soupd = BeautifulSoup(res.text, 'html.parser')
        c=soupd.select('#content')[0].text
        s=soupd.select('.show-info')[0].text
        date=s.lstrip('发布时间：')[:19]
        au=s[s.find('作者：'):].split()[0].lstrip('作者：')
        print(date,t,a,au)
        break