Python百度文库爬虫之ppt文件

Python百度文库爬虫之ppt文件

对于文件的所有类型，我都会用一篇文章进行说明，链接：

1. Python百度文库爬虫之txt文件
2. Python百度文库爬虫之doc文件
3. Python百度文库爬虫之pdf文件
4. Python百度文库爬虫之ppt文件
5. [Python百度文库爬虫之xls文件
6. Python百度文件爬虫终极版

一.网页分析

PTT文件的内容实际是图片，我们只需要把图片下载并保存

from IPython.display import Image
Image("./Images/ppt_0.png",width="600px",height="400px")

二.数据链接

我们查看链接，得知链接：https://wenku.baidu.com/browse/getbcsurl?doc_id=b906673ed1d233d4b14e852458fb770bf68a3b18&pn=1&rn=99999&type=ppt&callback=jQuery1101017633712903847765_1588032252586&_=1588032252587有我们的数据

Image("./Images/ppt_1.png",width="600px",height="400px")

查看链接，与我们数据一样：

Image("./Images/ppt_3.png",width="600px",height="400px")

三.程序调试

import requests
import json
import re
import json

session=requests.session()

url=input("请输入下载的文件URL地址：")

content=session.get(url).content.decode('gbk')
doc_id=re.findall('view/(.*?).html',url)[0]
types=re.findall(r"docType.*?:.*?'(.*?)'",content)[0]
title=re.findall(r"title.*?:.*?'(.*?)'",content)[0]

请输入下载的文件URL地址： https://wenku.baidu.com/view/b906673ed1d233d4b14e852458fb770bf68a3b18.html?fr=search

doc_id

'b906673ed1d233d4b14e852458fb770bf68a3b18'

types

'ppt'

title

'精品课件-爬虫技术'

content_url='https://wenku.baidu.com/browse/getbcsurl?doc_id='+doc_id+'&pn=1&rn=9999&type=ppt'
content=session.get(content_url).content.decode('gbk')

url_list=re.findall('{"zoom":"(.*?)","page"',content)

url_list=[addr.replace('\','') for addr in url_list]

url_list

['https://wkretype.bdimg.com/retype/zoom/0836f08558f5f61fb636661b?pn=1&o=jpg_6&md5sum=f2be3d1fed17d9e67fa325fbdfbafa6c&sign=c05e1cdb4f&png=0-487135&jpg=0-133194',
 'https://wkretype.bdimg.com/retype/zoom/0836f08558f5f61fb636661b?pn=2&o=jpg_6&md5sum=f2be3d1fed17d9e67fa325fbdfbafa6c&sign=c05e1cdb4f&png=487136-641849&jpg=133195-323627',
 'https://wkretype.bdimg.com/retype/zoom/0836f08558f5f61fb636661b?pn=3&o=jpg_6&md5sum=f2be3d1fed17d9e67fa325fbdfbafa6c&sign=c05e1cdb4f&png=641850-727977&jpg=323628-515968',
 'https://wkretype.bdimg.com/retype/zoom/0836f08558f5f61fb636661b?pn=4&o=jpg_6&md5sum=f2be3d1fed17d9e67fa325fbdfbafa6c&sign=c05e1cdb4f&png=727978-856818&jpg=515969-615553',
 'https://wkretype.bdimg.com/retype/zoom/0836f08558f5f61fb636661b?pn=5&o=jpg_6&md5sum=f2be3d1fed17d9e67fa325fbdfbafa6c&sign=c05e1cdb4f&png=856819-942946&jpg=615554-777861',
 'https://wkretype.bdimg.com/retype/zoom/0836f08558f5f61fb636661b?pn=6&o=jpg_6&md5sum=f2be3d1fed17d9e67fa325fbdfbafa6c&sign=c05e1cdb4f&png=942947-1029074&jpg=777862-946638',
 'https://wkretype.bdimg.com/retype/zoom/0836f08558f5f61fb636661b?pn=7&o=jpg_6&md5sum=f2be3d1fed17d9e67fa325fbdfbafa6c&sign=c05e1cdb4f&png=1029075-1125666&jpg=946639-1030299',
 'https://wkretype.bdimg.com/retype/zoom/0836f08558f5f61fb636661b?pn=8&o=jpg_6&md5sum=f2be3d1fed17d9e67fa325fbdfbafa6c&sign=c05e1cdb4f&png=1125667-1245334&jpg=1030300-1167061',
 'https://wkretype.bdimg.com/retype/zoom/0836f08558f5f61fb636661b?pn=9&o=jpg_6&md5sum=f2be3d1fed17d9e67fa325fbdfbafa6c&sign=c05e1cdb4f&png=1245335-1331462&jpg=1167062-1272951',
 'https://wkretype.bdimg.com/retype/zoom/0836f08558f5f61fb636661b?pn=10&o=jpg_6&md5sum=f2be3d1fed17d9e67fa325fbdfbafa6c&sign=c05e1cdb4f&png=1331463-1417590&jpg=1272952-1420059',
 'https://wkretype.bdimg.com/retype/zoom/0836f08558f5f61fb636661b?pn=11&o=jpg_6&md5sum=f2be3d1fed17d9e67fa325fbdfbafa6c&sign=c05e1cdb4f&png=1417591-1503718&jpg=1420060-1609566',
 'https://wkretype.bdimg.com/retype/zoom/0836f08558f5f61fb636661b?pn=12&o=jpg_6&md5sum=f2be3d1fed17d9e67fa325fbdfbafa6c&sign=c05e1cdb4f&png=1503719-1589846&jpg=1609567-1829614',
 'https://wkretype.bdimg.com/retype/zoom/0836f08558f5f61fb636661b?pn=13&o=jpg_6&md5sum=f2be3d1fed17d9e67fa325fbdfbafa6c&sign=c05e1cdb4f&png=1589847-1675974&jpg=1829615-1961046',
 'https://wkretype.bdimg.com/retype/zoom/0836f08558f5f61fb636661b?pn=14&o=jpg_6&md5sum=f2be3d1fed17d9e67fa325fbdfbafa6c&sign=c05e1cdb4f&png=1675975-1762102&jpg=1961047-2057806',
 'https://wkretype.bdimg.com/retype/zoom/0836f08558f5f61fb636661b?pn=15&o=jpg_6&md5sum=f2be3d1fed17d9e67fa325fbdfbafa6c&sign=c05e1cdb4f&png=1762103-1848230&jpg=2057807-2244791',
 'https://wkretype.bdimg.com/retype/zoom/0836f08558f5f61fb636661b?pn=16&o=jpg_6&md5sum=f2be3d1fed17d9e67fa325fbdfbafa6c&sign=c05e1cdb4f&png=1848231-1934358&jpg=2244792-2465213',
 'https://wkretype.bdimg.com/retype/zoom/0836f08558f5f61fb636661b?pn=17&o=jpg_6&md5sum=f2be3d1fed17d9e67fa325fbdfbafa6c&sign=c05e1cdb4f&png=1934359-2020486&jpg=2465214-2668167',
 'https://wkretype.bdimg.com/retype/zoom/0836f08558f5f61fb636661b?pn=18&o=jpg_6&md5sum=f2be3d1fed17d9e67fa325fbdfbafa6c&sign=c05e1cdb4f&png=2020487-2106614&jpg=2668168-2791205',
 'https://wkretype.bdimg.com/retype/zoom/0836f08558f5f61fb636661b?pn=19&o=jpg_6&md5sum=f2be3d1fed17d9e67fa325fbdfbafa6c&sign=c05e1cdb4f&png=2106615-2192742&jpg=2791206-2932355',
 'https://wkretype.bdimg.com/retype/zoom/0836f08558f5f61fb636661b?pn=20&o=jpg_6&md5sum=f2be3d1fed17d9e67fa325fbdfbafa6c&sign=c05e1cdb4f&png=2192743-2278870&jpg=2932356-3128420',
 'https://wkretype.bdimg.com/retype/zoom/0836f08558f5f61fb636661b?pn=21&o=jpg_6&md5sum=f2be3d1fed17d9e67fa325fbdfbafa6c&sign=c05e1cdb4f&png=2278871-2364998&jpg=3128421-3316449',
 'https://wkretype.bdimg.com/retype/zoom/0836f08558f5f61fb636661b?pn=22&o=jpg_6&md5sum=f2be3d1fed17d9e67fa325fbdfbafa6c&sign=c05e1cdb4f&png=2364999-2451126&jpg=3316450-3622711',
 'https://wkretype.bdimg.com/retype/zoom/0836f08558f5f61fb636661b?pn=23&o=jpg_6&md5sum=f2be3d1fed17d9e67fa325fbdfbafa6c&sign=c05e1cdb4f&png=2451127-2537254&jpg=3622712-3795370',
 'https://wkretype.bdimg.com/retype/zoom/0836f08558f5f61fb636661b?pn=24&o=jpg_6&md5sum=f2be3d1fed17d9e67fa325fbdfbafa6c&sign=c05e1cdb4f&png=2537255-2623382&jpg=3795371-4062675',
 'https://wkretype.bdimg.com/retype/zoom/0836f08558f5f61fb636661b?pn=25&o=jpg_6&md5sum=f2be3d1fed17d9e67fa325fbdfbafa6c&sign=c05e1cdb4f&png=2623383-&jpg=4062676-']

import os
path="F:\桌面\Files"+"\"+title

if not os.path.exists(path):
    os.mkdir(path)

for index,url in enumerate(url_list):
    content=session.get(url).content
    paths=os.path.join(path,str(index)+'.jpg')
    
    with open(paths,'wb') as f:
        f.write(content)
print("图片保存在"+title+"文件夹")

图片保存在精品课件-爬虫技术文件夹

Image("./Images/ppt_4.png",width="600px",height="400px")

三.函数编程

import requests
import json
import re
import os

session=requests.session()

path="F:\桌面\Files"

if not os.path.exists(path):
    os.mkdir(path)

def parse_txt1(code,doc_id):
    
    content_url='https://wenku.baidu.com/api/doc/getdocinfo?callback=cb&doc_id='+doc_id

    content=session.get(content_url).content.decode(code)
    md5sum=re.findall('"md5sum":"(.*?)",',content)[0]
    rsign=re.findall('"rsign":"(.*?)"',content)[0]
    pn=re.findall('"totalPageNum":"(.*?)"',content)[0]
    
    content_url='https://wkretype.bdimg.com/retype/text/'+doc_id+'?rn='+pn+'&type=txt'+md5sum+'&rsign='+rsign
    content=json.loads(session.get(content_url).content.decode('gbk'))
    
    result=''

    for item in content:
        for i in item['parags']:
            result+=i['c']
            
    return result

def parse_txt2(content,code,doc_id):
    md5sum=re.findall('"md5sum":"(.*?)",',content)[0]
    rsign=re.findall('"rsign":"(.*?)"',content)[0]
    pn=re.findall('"show_page":"(.*?)"',content)[0]
    
    content_url='https://wkretype.bdimg.com/retype/text/'+doc_id+'?rn='+pn+'&type=txt'+md5sum+'&rsign='+rsign
    content=json.loads(session.get(content_url).content.decode('utf-8'))
    
    result=''

    for item in content:
        for i in item['parags']:
            result+=i['c']
            
    return result

def parse_doc(content):
    
    url_list=re.findall(r'(https.*?0.json.*?)\x22}',content)
    url_list=[addr.replace("\\\/","/") for addr in url_list]
    
    result=""

    for url in set(url_list):
        content=session.get(url).content.decode('gbk')

        y=0
        txtlists=re.findall(r'"c":"(.*?)".*?"y":(.*?),',content)
        for item in txtlists:
            # 当item[1]的值与前面不同时，代表要换行了
            if not y==item[1]:
                y=item[1]
                n='
'
            else:
                n=''
            result+=n
            result+=item[0].encode('utf-8').decode('unicode_escape','ignore')
    
    return result

def parse_pdf(content):
    
    url_list=re.findall(r'(https.*?0.json.*?)\x22}',content)
    url_list=[addr.replace("\\\/","/") for addr in url_list]
    
    result=""

    for url in set(url_list):
        content=session.get(url).content.decode('gbk')

        y=0
        txtlists=re.findall(r'"c":"(.*?)".*?"y":(.*?),',content)
        for item in txtlists:
            # 当item[1]的值与前面不同时，代表要换行了
            if not y==item[1]:
                y=item[1]
                n='
'
            else:
                n=''
            result+=n
            result+=item[0].encode('utf-8').decode('unicode_escape','ignore')
    
    return result


def parse_ppt(doc_id,title):
    
    content_url='https://wenku.baidu.com/browse/getbcsurl?doc_id='+doc_id+'&pn=1&rn=9999&type=ppt'
    content=session.get(content_url).content.decode('gbk')
    
    url_list=re.findall('{"zoom":"(.*?)","page"',content)
    url_list=[addr.replace('\','') for addr in url_list]
    
    path="F:\桌面\Files"+"\"+title

    if not os.path.exists(path):
        os.mkdir(path)
    
    for index,url in enumerate(url_list):
        content=session.get(url).content
        paths=os.path.join(path,str(index)+'.jpg')
    
        with open(paths,'wb') as f:
            f.write(content)
    print("图片保存在"+title+"文件夹")
    
    
def save_file(title,filename,content):
    
    with open(filename,'w',encoding='utf-8') as f:
        f.write(content)
        print("文件"+title+"保存成功")
    f.close()
    

def main():
    
    print("欢迎来到百度文库文件下载：")
    print("-----------------------
")
     
    
    while True:
        try:
            print("1.doc 
 2.txt 
 3.ppt 
 4.xls
 5.ppt
")
            types=input("请输入需要下载文件的格式(0退出)：")

            if types=="0":
                break

            if types not in ['txt','doc','pdf','ppt']:
                print("抱歉功能尚未开发")
                continue


            url=input("请输入下载的文库URL地址：")

            # 网页内容
            response=session.get(url)

            code=re.findall('charset=(.*?)"',response.text)[0]

            if code.lower()!='utf-8':
                code='gbk'

            content=response.content.decode(code)

            # 文件id
            doc_id=re.findall('view/(.*?).html',url)[0]
            # 文件类型
            #types=re.findall(r"docType.*?:.*?'(.*?)'",content)[0]
            # 文件主题
            #title=re.findall(r"title.*?:.*?'(.*?)'",content)[0]

            if types=='txt':
                md5sum=re.findall('"md5sum":"(.*?)",',content)
                if md5sum!=[]:
                    result=parse_txt2(content,code,doc_id)
                    title=re.findall(r'<title>(.*?). ',content)[0]
                    #filename=os.getcwd()+"\Files\"+title+'.txt'
                    filename=path+"\"+title+".txt"
                    save_file(title,filename,result)
                else: 
                    result=parse_txt1(code,doc_id)
                    title=re.findall(r"title.*?:.*?'(.*?)'",content)[0]
                    #filename=os.getcwd()+"\Files\"+title+'.txt'
                    filename=path+"\"+title+".txt"
                    save_file(title,filename,result)
            elif types=='doc':
                title=re.findall(r"title.*?:.*?'(.*?)'",content)[0]
                result=parse_doc(content)
                filename=path+"\"+title+".doc"
                save_file(title,filename,result)
            elif types=='pdf':
                title=re.findall(r"title.*?:.*?'(.*?)'",content)[0]
                result=parse_pdf(content)
                filename=path+"\"+title+".txt"
                save_file(title,filename,result)
            elif types=='ppt':
                title=re.findall(r"title.*?:.*?'(.*?)'",content)[0]
                parse_ppt(doc_id,title)
                
                
        except Exception as e:
            print(e)


if __name__=='__main__':
    main()

欢迎来到百度文库文件下载：
-----------------------

1.doc 
 2.txt 
 3.ppt 
 4.xls
 5.ppt



请输入需要下载文件的格式(0退出)： ppt
请输入下载的文库URL地址： https://wenku.baidu.com/view/b906673ed1d233d4b14e852458fb770bf68a3b18.html?fr=search


图片保存在精品课件-爬虫技术文件夹
1.doc 
 2.txt 
 3.ppt 
 4.xls
 5.ppt



请输入需要下载文件的格式(0退出)： ppt
请输入下载的文库URL地址： https://wenku.baidu.com/view/26f8556af021dd36a32d7375a417866fb94ac0e3.html?fr=search


图片保存在网络爬虫基本原理文件夹
1.doc 
 2.txt 
 3.ppt 
 4.xls
 5.ppt



请输入需要下载文件的格式(0退出)： 0

Image("./Images/ppt_5.png",width="600px",height="400px")

Image("./Images/ppt_6.png",width="600px",height="400px")