Python爬虫练习:抓取笔趣阁小说(一)

练习使用requests BeautifulSoup 抓取一本小说存放到D盘中

速度比较慢、抓取服务器容易中断

# -*- coding:UTF-8 -*-
import requests
from bs4 import BeautifulSoup
import re

"""
获取书籍目录
"""


def getBookContents(url):
    req = requests.get(url=url)
    req.encoding = "gb2312"
    html = req.text

    dv_bf = BeautifulSoup(html, "html5lib")
    dv = dv_bf.find("div", class_="listmain")
    # dvs = dv_bf.find_all("div", class_="listmain")

    a_bf = BeautifulSoup(str(dv), "html5lib")
    a = a_bf.find_all("a")

    book_contents_list = []
    i = 0
    for content in a[13:]:
        book_title = content.string
        book_url = content.get("href")
        try:
            # 数据清洗 获取标题"章"字索引 若没有则出现异常 不记录数据
            book_title_index = str(book_title).index("章", 0)
            # print(book_title_index)
            # 通过index切片 获取新的章节标题
            new_book_title = book_title[book_title_index + 1:]
            # print(new_book_title)
            # 去除标题含有的空格
            i = i + 1
            new_book_titles = "第{}章".format(i) + new_book_title.lstrip()
            new_book_url = "http://www.biqukan.com{}".format(book_url)
            #print(new_book_titles, new_book_url)

            # 一组数据设置为字典类型
            contenets = {new_book_titles: new_book_url}
            # 存放到list
            book_contents_list.append(contenets)
        except:
            # 通过异常捕捉,出现异常是没有找到"章"字符索引
            print("*****************不是正文章节节点,不予记录****************")
            print("原标题=", book_title)
            print("原链接=", new_book_url)
    return book_contents_list


"""
通过文章链接地址获取章节内容
"""


def getConnect(url):
    target = 'http://www.biqukan.com/1_1094/5403177.html'
    req = requests.get(url=url)
    req.encoding = 'gb2312'
    html = req.text
    div_bf = BeautifulSoup(html, "html5lib")
    div = div_bf.find("div", id="content")
    # 去除script
    [s.extract() for s in div('script')]
    # print(div.text)
    return div.text


"""
将小说内容写入到文件
"""


def saveData(filepath, text):
    with open(filepath, mode="w", encoding="UTF-8") as f:
        f.writelines(text)
        f.write('

')


if __name__ == '__main__':

    book_list = getBookContents("http://www.biqukan.com/1_1094")

    for li in book_list:
            filepath = "d:\123\"
            connecturl = ""
            for aa in  li.keys():
                filepath = filepath+aa
                connecturl = li[aa]

            text = getConnect(connecturl)
            saveData(filepath,text)