参考

可以参考：http://www.jianshu.com/p/45e13334a71f
我的是Soup版 爬取贴吧 某个帖子下面所有的图片链接

优点

1. 不用输入页面 自动匹配到总共几页。
2. 自动爬取该贴吧下的所有页的图片资源
3. 自动重命名文件。通过命名可以看到是第几页的图片

效果图如下：

tiebapachong.png

# -*- coding:utf-8 -*-
# **********************************
# ** http://weibo.com/lixiaodaoaaa #
# ****** by:lixiaodaoaaa ***********


# -*- coding: UTF-8 -*-
import urllib
import re
import sys
import json
import requests
from bs4 import BeautifulSoup, Tag
from datetime import datetime
import random
import time


def convertUrlToBeautifulSoup(url):
    getStr = requests.get(url)
    getStr.encoding = "utf-8"
    return BeautifulSoup(getStr.text, "html.parser")


def download_img(beSoup, page):
    for myImg in mySoup.select(".BDE_Image"):
        imgUrl = myImg.get("src")
        myTempStr = imgUrl.split("sign=")
        strPage = "page_%d_fileName=" % page
        strTime = "%s.jpg" % time.time()
        fileName = strPage + strTime
        print(fileName)
        urllib.request.urlretrieve(imgUrl, fileName)


def getTotalNumber(beSoup):
    page = beSoup.select(".l_reply_num")[0].select(".red")[1].text
    return int(page)


def getParaUrl(sourUrl, page):
    para = "?pn=%d" % page
    hasParaUrl = startUrl + para
    return hasParaUrl


if __name__ == '__main__':
    startUrl = input('输入网址，把pn=后面的数字去掉')
    mySoup = convertUrlToBeautifulSoup(startUrl)
    totalPage = getTotalNumber(mySoup)
    startPage = 2
    download_img(mySoup, 1)
    while startPage <= totalPage:
        tempSoup = convertUrlToBeautifulSoup(getParaUrl(startUrl, startPage))
        download_img(tempSoup, startPage)
        startPage += 1