爬取所有校园新闻

Posted 2020-10-10 XIE_97

1、获取单条新闻的#标题#链接#时间#来源#内容 #点击次数，并包装成一个函数。

import requests
from bs4 import BeautifulSoup
import re

url_main="http://news.gzcc.cn/html/xiaoyuanxinwen/"
res = requests.get(url_main)
res.encoding = \'utf-8\'

soup = BeautifulSoup(res.text,\'html.parser\')
li = soup.select(\'li\')

def gethits(url_1):
    li_id =re.search(\'_.*/(.*).html\',url_1).groups(0)[0]
    hits = requests.get(\'http://oa.gzcc.cn/api.php?op=count&id={}&modelid=80\'.format(li_id)).text.split(\'.\')[-1].rstrip(\'\'\'\');\'\'\').lstrip(\'\'\'\'html(\'\'\')
    return hits

def getpageinfo(label):
    for title_list in label:
        if len(title_list.select(\'.news-list-title\'))>0:
            href = title_list.select(\'a\')[0][\'href\']
            title = title_list.select(\'.news-list-title\')[0].text
            time = title_list.select(\'span\')[0].text
            info = title_list.select(\'span\')[1].text

            res_list = requests.get(href)
            res_list.encoding = \'utf-8\'
            soup_list = BeautifulSoup(res_list.text,\'html.parser\')
            text_list = soup_list.select(\'.show-content\')[0].text

            hits_list = gethits(href)

            print(\'时间：\',time,\'\\n标题：\',title,\'\\n链接：\',href,\'\\n来源：\',info,\'\\n点击次数：\',hits_list,\'\\n\')
            print(\'正文：\',text_list)
            break

getpageinfo(li)

结果：

2、获取一个新闻列表页的所有新闻的上述详情，并包装成一个函数。

import requests
from bs4 import BeautifulSoup
import re

url_main="http://news.gzcc.cn/html/xiaoyuanxinwen/"
res = requests.get(url_main)
res.encoding = \'utf-8\'

soup = BeautifulSoup(res.text,\'html.parser\')
li = soup.select(\'li\')

def gethits(url_1):
    li_id =re.search(\'_.*/(.*).html\',url_1).groups(0)[0]
    hits = requests.get(\'http://oa.gzcc.cn/api.php?op=count&id={}&modelid=80\'.format(li_id)).text.split(\'.\')[-1].rstrip(\'\'\'\');\'\'\').lstrip(\'\'\'\'html(\'\'\')
    return hits

def getpageinfo(label):
    for title_list in label:
        if len(title_list.select(\'.news-list-title\'))>0:
            href = title_list.select(\'a\')[0][\'href\']
            title = title_list.select(\'.news-list-title\')[0].text
            time = title_list.select(\'span\')[0].text
            info = title_list.select(\'span\')[1].text

            res_list = requests.get(href)
            res_list.encoding = \'utf-8\'
            soup_list = BeautifulSoup(res_list.text,\'html.parser\')
            text_list = soup_list.select(\'.show-content\')[0].text

            hits_list = gethits(href)

            print(\'时间：\',time,\'\\n标题：\',title,\'\\n链接：\',href,\'\\n来源：\',info,\'\\n点击次数：\',hits_list,\'\\n\')
            print(\'正文：\',text_list)
            
getpageinfo(li)

结果：

3、获取所有新闻列表页的网址，调用上述函数

import requests
from bs4 import BeautifulSoup
import re

url_main="http://news.gzcc.cn/html/xiaoyuanxinwen/"
res = requests.get(url_main)
res.encoding = \'utf-8\'

soup = BeautifulSoup(res.text,\'html.parser\')
li = soup.select(\'li\')

def gethits(url_1):
    li_id =re.search(\'_.*/(.*).html\',url_1).groups(0)[0]
    hits = requests.get(\'http://oa.gzcc.cn/api.php?op=count&id={}&modelid=80\'.format(li_id)).text.split(\'.\')[-1].rstrip(\'\'\'\');\'\'\').lstrip(\'\'\'\'html(\'\'\')
    return hits

def getpageinfo(label):
    for title_list in label:
        if len(title_list.select(\'.news-list-title\'))>0:
            href = title_list.select(\'a\')[0][\'href\']
            title = title_list.select(\'.news-list-title\')[0].text
            time = title_list.select(\'span\')[0].text
            info = title_list.select(\'span\')[1].text

            res_list = requests.get(href)
            res_list.encoding = \'utf-8\'
            soup_list = BeautifulSoup(res_list.text,\'html.parser\')
            text_list = soup_list.select(\'.show-content\')[0].text

            hits_list = gethits(href)


getpageinfo(li)

pages = int(soup.select(\'.a1\')[0].text.rstrip(\'条\'))//10+1

for i in range(2,pages+1):
    url_page = "http://news.gzcc.cn/html/xiaoyuanxinwen/{}.html".format(i)
    
    res_page = requests.get(url_page)
    res_page.encoding = \'utf-8\'

    soup_page = BeautifulSoup(res_page.text,\'html.parser\')
    list_page = soup.select(\'li\')

    getpageinfo(list_page)
    print(url_page)

结果：

4、完成所有校园新闻的爬取工作。

import requests
import re
from bs4 import BeautifulSoup
url=\'http://news.gzcc.cn/html/xiaoyuanxinwen/\'
res=requests.get(url)
res.encoding=\'utf-8\'
soup=BeautifulSoup(res.text,\'html.parser\')

#获取点击次数
def getclick(newurl):
    id=re.search(\'_(.*).html\',newurl).group(1).split(\'/\')[1]
    clickurl=\'http://oa.gzcc.cn/api.php?op=count&id={}&modelid=80\'.format(id)
    click=int(requests.get(clickurl).text.split(".")[-1].lstrip("html(\'").rstrip("\');"))
    return click

#获取网页内容
def getonpages(listurl):
    res=requests.get(listurl)
    res.encoding=\'utf-8\'
    soup=BeautifulSoup(res.text,\'html.parser\')
    
    for news in soup.select(\'li\'):
        if len(news.select(\'.news-list-title\'))>0:
            title=news.select(\'.news-list-title\')[0].text #标题
            time=news.select(\'.news-list-info\')[0].contents[0].text#时间
            url1=news.select(\'a\')[0][\'href\'] #链接
            source=news.select(\'.news-list-info\')[0].contents[1].text#来源
            description=news.select(\'.news-list-description\')[0].text #内容

            resd=requests.get(url1)
            resd.encoding=\'utf-8\'
            soupd=BeautifulSoup(resd.text,\'html.parser\')
            detail=soupd.select(\'.show-content\')[0].text

            click=getclick(url1) #调用点击次数
            print(title,url1,click)
            
count=int(soup.select(\'.a1\')[0].text.rstrip("条"))
pages=count//10+1
for i in range(2,4):
    pagesurl="http://news.gzcc.cn/html/xiaoyuanxinwen/{}.html".format(i)
    getonpages(pagesurl)

结果：