bilibili完結番劇分區數據抓取

 

 

 這是b站的完結番劇界面，它屬於b站-番劇分區-完結動畫區，今天來爬取b站的完結番劇，來了解他們的播放量和硬幣數等。

爬取方法: 

B站是一個對於爬蟲是一個很友好的網站，它對於爬蟲有專門的接口 

https://github.com/uupers/BiliSpider/wiki

這個網址中有b站各個區域的接口，由於我們爬取的是b站二級分區數據，所以我們可以在這個網頁右側的[Bilibili API 二級分區視頻分頁數據（投稿時間逆序）]鏈接中，我們可以看到b站視頻數據接口的信息。它是一個json文件。

我們需要用到的就是這部分信息，我們就轉而獲取視頻接口信息的json文件，提取出想要的文件來保存在csv文件中。

我們總的思路是獲取視頻信息的json文件->提取json數據->保存數據爲csv

具體實現：

 

這個就是我們所需要獲取的json文件的地址了

def get_url():
    url = 'http://api.bilibili.com/x/web-interface/newlist?rid=32&pn='
    for i in range(1, 328):
        urls.append(url + str(i) + '&ps=50')

得到json文件中的信息

def get_message(url):
    print(url)
    time.sleep(1)#一秒爬一次，運用了4個線程就是一秒爬4次
    try:
        r = requests.get(url, timeout=5)
        data = json.loads(r.text)['data']['archives']
        for j in range(len(data)):
            content = {}
            content['aid'] = data[j]['aid']
            content['title'] = data[j]['title']
            content['view'] = data[j]['stat']['view']
            content['danmaku'] = data[j]['stat']['danmaku']
            content['reply'] = data[j]['stat']['reply']
            content['favorite'] = data[j]['stat']['favorite']
            content['coin'] = data[j]['stat']['coin']
            comic_list.append(content)
    except Exception as e:
        print(e)

然後寫入csv文件

def write_to_file(comic_list):#寫入csv文件
    with open(r'bilibili-comic.csv', 'w', newline='', encoding='utf-8') as f:
        fieldnames = ['aid', 'title', 'view', 'danmaku', 'reply', 'favorite', 'coin']
        writer = csv.DictWriter(f, fieldnames=fieldnames)
        writer.writeheader()
        try:
            writer.writerows(comic_list)
        except Exception as e:
            print(e)

我的電腦是4核的就創建4個線程，然後調用map函數運行get_messsage函數

get_url()
pool = ThreadPool(4)
pool.map(get_message, urls)
pool.close()
write_to_file(comic_list)

整體的代碼

import requests
import json
import csv
from multiprocessing.dummy import Pool as ThreadPool#導入多線程庫
import time


comic_list = []
urls = []


def get_url():
    url = 'http://api.bilibili.com/x/web-interface/newlist?rid=32&pn='
    for i in range(1, 328):
        urls.append(url + str(i) + '&ps=50')


def get_message(url):
    print(url)
    time.sleep(1)#一秒爬一次，運用了4個線程就是一秒爬4次
    try:
        r = requests.get(url, timeout=5)
        data = json.loads(r.text)['data']['archives']
        for j in range(len(data)):
            content = {}
            content['aid'] = data[j]['aid']
            content['title'] = data[j]['title']
            content['view'] = data[j]['stat']['view']
            content['danmaku'] = data[j]['stat']['danmaku']
            content['reply'] = data[j]['stat']['reply']
            content['favorite'] = data[j]['stat']['favorite']
            content['coin'] = data[j]['stat']['coin']
            comic_list.append(content)
    except Exception as e:
        print(e)


def write_to_file(comic_list):#寫入csv文件
    with open(r'bilibili-comic.csv', 'w', newline='', encoding='utf-8') as f:
        fieldnames = ['aid', 'title', 'view', 'danmaku', 'reply', 'favorite', 'coin']
        writer = csv.DictWriter(f, fieldnames=fieldnames)
        writer.writeheader()
        try:
            writer.writerows(comic_list)
        except Exception as e:
            print(e)


get_url()
pool = ThreadPool(4)
pool.map(get_message, urls)
pool.close()
write_to_file(comic_list)

在爬取過程中，很多網站都有自己的接口，我們可以去尋找接口來讓爬取過程變得簡單