爬取全部校园新闻

￡神魔★判官ぃ 2022-01-07 13:23 443阅读 0赞

0.从新闻url获取点击次数，并整理成函数

*  newsUrl
 *  newsId(re.search())
 *  clickUrl(str.format())
 *  requests.get(clickUrl)
 *  re.search()/.split()
 *  str.lstrip(),str.rstrip()
 *  int
 *  整理成函数
 *  获取新闻发布时间及类型转换也整理成函数

代码展示：

#获取新闻详情
    def annews(url):
        news={}
        res=requests.get(url)
        res.encoding='utf-8'
        soup=bs4.BeautifulSoup(res.text,'html.parser')
        news['title']=soup.select(".show-title")[0].text
        news['date']=getTime(soup.select(".show-info")[0])
        news['content']=soup.select("#content")[0].text.strip()
        news['count']=getCount(url)
        return news
        
    #获取点击数
    def getCount(url):
        newsId = re.search('/(\d+).html', url).groups(0)[0]
        countHtml=requests.get("http://oa.gzcc.cn/api.php?op=count&id={}&modelid=80".format(newsId))
        count=int(re.findall("\d+",countHtml.text.split(".html")[-1])[0])
        return count
        
    #获取时间
    def getTime(str):
        infos=str.text.split()
        datestr=infos[0]+' '+infos[1]
        return datetime.strptime(datestr,'发布时间:%Y-%m-%d %H:%M:%S')
        
    #获取指定新闻页范围的url
    def getNsUrl(url,start,end):
        urls=[]
        for i in range(start,end):
            urls.append("{}/{}.html".format(url,i))
        return urls
    
    #获取新闻页的新闻url
    def getNewsUrl(url):
        newsUrlList=[]
        res=requests.get(url)
        res.encoding='utf-8'
        soup=bs4.BeautifulSoup(res.text,'html.parser')
        alist=soup.select(".news-list a")
        for i in alist:
            newsUrlList.append(i['href'])
        return newsUrlList
    
    
    urls=getNsUrl('http://news.gzcc.cn/html/xiaoyuanxinwen',66,76)
    newsList=[]
    for page in urls:
        for url in getNewsUrl(page):
            time.sleep(1)
            newsList.append(annews(url))
    df=pd.DataFrame(newsList)
    df.to_csv("news.csv",encoding='utf-8')

运行截图：

![1481710-20190415134310619-446338567.png][]

转载于:https://www.cnblogs.com/GMUK/p/10713523.html

[1481710-20190415134310619-446338567.png]: /images/20211220/f08313dfeb7e46eab499c36eab96ef92.png