爬取斗鱼直播所有房间的翻页功能的实现

前面我们已经实现了斗鱼直播单页房间数据的爬取，

具体代码实现在我的博客：https://blog.youkuaiyun.com/g_optimistic/article/details/89944897

现在只讲翻页操作，以下有两种方法：

目录

 

1.使用无界面浏览器  Selenium 与PantomJS的结合

2.ajax异步请求，重点是找到接口

---

1.使用无界面浏览器  Selenium 与PantomJS的结合

当点击下一页的时候，如下图找到的那个标签 li 的属性 aria-disabled="true"的时候，就没有下一页了。

代码实现：

from selenium import webdriver
from lxml import etree
import time


def get_data(content):
    tree = etree.HTML(content)
    li_list = tree.xpath('//ul[@class="layout-Cover-list"]/li')
    print(len(li_list))
    i = 0
    for li in li_list:
        i += 1
        print('===================第%s个房间======================' % i)
        room_name = li.xpath('.//h3[@class="DyListCover-intro"]/text()')
        print("房间名称", room_name[0])
        room_tag = li.xpath('.//span[@class="DyListCover-zone"]/text()')
        print("房间标签：", room_tag[0])
        room_player = li.xpath('.//h2[@class="DyListCover-user"]/text()')
        print("主播：", room_player[0])
        room_follows = li.xpath('.//span[@class="DyListCover-hot"]/text()')
        print("关注数：", room_follows[0])
    return tree

# 创建浏览器
driver = webdriver.PhantomJS()
# 1.访问首页
page = 1
driver.get('https://www.douyu.com/directory/all')
time.sleep(5)
# 2.解析页面
tree = get_data(driver.page_source)

while True:
    if tree.xpath('//li[@class=" dy-Pagination-next"]/@aria-disabled="true"') == 'true':
        break
    driver.find_element_by_class_name(' dy-Pagination-next').click()
    time.sleep(3)
    get_data(driver.page_source)
    page += 1
    print(page)

2.ajax异步请求，重点是找到接口

每次点击页数的时候，就会在network出现如下的XHR里面的文件，很有可能就写着和分页有关的东西

点开一个文件，看看他的请求头：得出以下规律

真正分页的接口是： 'https://www.douyu.com/gapi/rkc/directory/0_0/%s' % 页数

找到接口之后，看一下他的response的内容：

开始请求，代码如下：

import requests

page = 0
while True:
    page += 1
    print(
        '-------------------------第%s页-----------------------------------------------------------------------------------------' % page)
    url = 'https://www.douyu.com/gapi/rkc/directory/0_0/%s' % page
    headers = {
        'user-agent': 'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.109 Safari/537.36'
    }
    response = requests.get(url=url, headers=headers)
    with open('templates\\douyu1.txt', 'w', encoding='utf-8') as fp:
        fp.write(response.content.decode('utf-8'))
    data_list = response.json()['data']['rl']
    print("该页共查询到%s个房间" % len(data_list))
    i = 0
    for data in data_list:
        i += 1
        print("第%s个房间++++++++++++++++++++++++++++++++++++++++" % i)
        room_name = data['rn']
        room_tag = data['c2name']
        room_player = data['nn']
        room_follows = data['ol']
        print("房间名称：", room_name)
        print("主播：", room_player)
        print("房间标签：", room_tag)
        print("关注数：", room_follows)