入门python爬取精彩阅读网的小说 --- 2

本文来源吾爱破解论坛

本帖最后由 HaNnnng 于 2018-11-14 01:29 编辑

之前写了一篇面向过程的爬虫帖子https://www.52pojie.cn/forum.php ... &extra=#pid22524169

简单来说面向过程就是把分析出解决问题所需要的步骤，然后用函数把这些步骤一步一步实现，使用的时候一个一个依次调用就可以了。

而面向对象则是把构成问题事务分解成各个对象，建立对象的目的不是为了完成一个步骤，而是为了描叙某个事物在整个解决问题的步骤中的行为。


在我的理解就是，面向过程要手把手教电脑干活。而面向对象只要设定一个模拟问题解决的方案，就会自动教电脑干活。


我们先将之前面向过程的代码根据功能改成一个个方法，函数。如下面getHtml是获取网页信息，get_chapter_info是获取章节信息。最后再调用这个方法。
[Python] 纯文本查看 复制代码

# _*_ coding: utf_8 _*_
__author__ = 'lwh'
__date__ = '2018/11/12 19:56'

import re
import requests


# 获取网页信息
def getHtml(url):
    response = requests.get(url)
    response.encoding = 'utf-8'
    html = response.text
    return html


def get_chapter_info(url):
    html = getHtml(url)
    nover_title = re.findall(r'<meta property="og:novel:book_name" content="(.*?)"/>', html)[0]
    dl = re.findall(r'<dl class="panel-body panel-chapterlist">  <dd class="col-md-3">.*?</dl>', html, re.S)[0]
    chapter_info_list = re.findall(r'href="(.*?)">(.*?)<', dl)
    return nover_title, chapter_info_list


def get_chapter_content(chapter_url):    html = getHtml(chapter_url)
    chapter_content = re.findall(r' <div class="panel-body" id="htmlContent">(.*?)</div> ', html, re.S)[0]
    chapter_content = chapter_content.replace('<br />', '')
    chapter_content = chapter_content.replace('<br>', '')
    chapter_content = chapter_content.replace('<br />', '')
    chapter_content = chapter_content.replace('<p>', '')
    chapter_content = chapter_content.replace('</p>', '')
    chapter_content = chapter_content.replace(' ', '')

    return chapter_content


def spider(url):
    nover_title, chapter_info_list = get_chapter_info(url)

    f = open('%s.txt' % nover_title, "w", encoding='utf-8')
    # 下载各章节
    for chapter_url, chapter_title in chapter_info_list:
        chapter_url = 'http://www.jingcaiyuedu.com%s' % chapter_url
        chapter_content = get_chapter_content(chapter_url)

        f.write(chapter_title)
        f.write('\n')
        f.write(chapter_content)
        f.write('\n\n\n\n\n')
        print(chapter_url)


if __name__ == '__main__':
    nover_url = 'http://www.jingcaiyuedu.com/book/376655.html'
    spider(nover_url)

# _*_ coding: utf_8 _*_
__author__ = 'lwh'
__date__ = '2018/11/12 20:10'

import re
import requests


class Spider():
    # 获取网页信息
    def getHtml(self, url):
        response = requests.get(url)
        response.encoding = 'utf-8'
        html = response.text
        return html

    def get_chapter_info(self, url):
        html = self.getHtml(url)
        nover_title = re.findall(r'<meta property="og:novel:book_name" content="(.*?)"/>', html)[0]
        dl = re.findall(r'<dl class="panel-body panel-chapterlist">  <dd class="col-md-3">.*?</dl>', html, re.S)[0]
        chapter_info_list = re.findall(r'href="(.*?)">(.*?)<', dl)
        return nover_title, chapter_info_list
        
    def get_chapter_content(self, chapter_url):
        html = self.getHtml(chapter_url)
        chapter_content = re.findall(r' <div class="panel-body" id="htmlContent">(.*?)</div> ', html, re.S)[0]
        chapter_content = chapter_content.replace('<br />', '')
        chapter_content = chapter_content.replace('<br>', '')
        chapter_content = chapter_content.replace('<br />', '')
        chapter_content = chapter_content.replace('<p>', '')
        chapter_content = chapter_content.replace('</p>', '')
        chapter_content = chapter_content.replace(' ', '')

        return chapter_content

    def spider(self, url):
        nover_title, chapter_info_list = self.get_chapter_info(url)

        f = open('%s.txt' % nover_title, "w", encoding='utf-8')
        # 下载各章节
        for chapter_url, chapter_title in chapter_info_list:
            chapter_url = 'http://www.jingcaiyuedu.com%s' % chapter_url
            chapter_content = self.get_chapter_content(chapter_url)

            f.write(chapter_title)
            f.write('\n')
            f.write(chapter_content)
            f.write('\n\n\n\n\n')
            print(chapter_url)