基于Bilibili热门视频Top100弹幕的数据爬取与分析（源代码）

网络爬虫——基于Bilibili热门视频Top100弹幕的数据爬取与分析

实验内容

目标网站：Bilibili热门视频Top100

目标网址：
https://www.bilibili.com/ranking?（每过几天都会变的哦）

任务要求

实现对于Bilibili热门视频Top100弹幕的数据爬取与分析

源码

from lxml import etree
import time
import jieba
import numpy as np
from PIL import Image
import requests
import re
from requests.exceptions import RequestException
from wordcloud import WordCloud as wc

class getUrl ():
    def __init__(self,url):
        self.url = url
        
    def getTxt(self):
        self.headers = {
            'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64)AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Safari/537.36 Edg/80.0.361.69'        
        }
        try:
            result = requests.get(self.url,headers=self.headers,timeout=30)
            result.raise_for_status()
            result.encoding = result.apparent_encoding
            return result.text
        except:
            return ""    
        
    def parsePage(self):
        res = self.getTxt()
        newhtml =etree.HTML(res,etree.HTMLParser())
        
        result=newhtml.xpath('//*[@id="app"]/div[1]/div/div[1]/div[2]/div[3]/ul/li/div[2]/div[1]/a//@href')

        return  result
    
    
class getAvNum():
    def __init__(self,url):
        self.url = url
        
    def getTxt(self):
        self.headers = {
            'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64)AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Safari/537.36 Edg/80.0.361.69'        
        }
        try:
            result = requests.get(self.url,headers=self.headers,timeout=30)
            result.raise_for_status()
            result.encoding = result.apparent_encoding
            return result.text
        except:
            return ""
        
    def parsePage(self):
        res = self.getTxt()
        newhtml =etree.HTML(res,etree.HTMLParser())
        rlist=newhtml.xpath('/html/head/meta[10]//@content')
        
        resp = requests.get(rlist[0],headers=self.headers)
        match_rule = r'cid=(.*?)&aid'
        oid = re.search(match_rule,resp.text).group().replace('cid=','').replace('&aid','')

        return  oid
    
class Bilibili():
    
    def __init__(self,oid):
        self.headers={
        'Host': 'api.bilibili.com',
        'Connection': 'keep-alive',
        'Cache-Control': 'max-age=0',
        'Upgrade-Insecure-Requests': '1',
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.92 Safari/537.36',
        'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8',
        'Accept-Encoding': 'gzip, deflate, br',
        'Accept-Language': 'zh-CN,zh;q=0.9',
        'Cookie': 'finger=edc6ecda; LIVE_BUVID=AUTO1415378023816310; stardustvideo=1; CURRENT_FNVAL=8; buvid3=0D8F3D74-987D-442D-99CF-42BC9A967709149017infoc; rpdid=olwimklsiidoskmqwipww; fts=1537803390'

        }
        self.url='https://api.bilibili.com/x/v1/dm/list.so?oid='+str(oid)
        self.barrage_reault=self.get_page()

    def get_page(self):
        try:
            time.sleep(0.5)
            response=requests.get(self.url,headers=self.headers)
        except Exception as e:
            print('获取xml内容失败,%s' % e)
            return False
        else:
            if response.status_code == 200:
                with open('bilibili.xml','wb') as f:
                    f.write(response.content)
                return True
            else:
                return False

    def param_page(self):
        time.sleep(1)
        if  self.barrage_reault:
            html=etree.parse('bilibili.xml',etree.HTMLParser())
            results=html.xpath('//d//text()')
            return results

def remove_double_barrage(resultlist):
    
    double_barrage=[]
    results=[]
    barrage=set()
    for result in resultlist:
        if result not in results:
            results.append(result)
        else:
            double_barrage.append(result)
            barrage.add(result)
    return double_barrage,results,barrage

def make_wordCould(resultlist):
    double_barrages,results,barrages=remove_double_barrage(resultlist)
    # 重词计数
    with open('barrages.txt','w', -1, 'utf-8', None, None) as f:
        for barrage in barrages:
            amount=double_barrages.count(barrage)
            stt = barrage+':'+str(amount+1)+'\n'
            f.write(stt)
                
    # 设置停用词
    stop_words=['【','】',',','.','?','!','。']
    words=[]
    if results:
        for result in results:
            for stop in stop_words:
                result=''.join(result.split(stop))
            words.append(result)
        # 列表拼接成字符串
        words=''.join(words)
        words=jieba.cut(words)
        words=''.join(words)
        luo=np.array(Image.open('洛天依.jpg'))    
        w=wc(font_path='‪C:/Windows/Fonts/SIMYOU.TTF',background_color='white',width=1600,height=1600,max_words=2000,mask=luo)
        w.generate(words)
        w.to_file('luo.jpg')
            
def main():
    url="https://www.bilibili.com/ranking?spm_id_from=333.851.b_7072696d61727950616765546162.3"
    urls = getUrl(url)
    strUrl = urls.parsePage()
    ress = []
    for i in strUrl:
        AV = getAvNum(i)
        oid = AV.parsePage()
        b=Bilibili(oid)
        for j in b.param_page():
            ress.append(j)
    make_wordCould(ress)

if __name__ == '__main__':
    main()

具体文件可以到我的github上面下载