oeong

  使用xpath爬取酷狗TOP500的歌曲信息, 将排名、歌手名、歌曲名、歌曲时长,提取的结果以文件形式保存下来。参考网址:http://www.kugou.com/yy/rank/home/1-8888.html

  大概步骤:谷歌F12打开开发者工具-->在Elements找到想爬取的信息-->右键Copy XPath(或是根据Network里Response的代码手动写出Xpath路径)-->对比这类信息的xpath,再定位并提取这类信息

  注意:我们获取的Network里Response的代码,Elements的html代码是经过渲染的,仅供参考

import time
import json
import requests
from lxml import etree


def get_one_page(url):
    try:
        headers = {\'User-Agent\': \'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103 Safari/537.36\'}
        response = requests.get(url, headers=headers)
        response.encoding = response.apparent_encoding
        if response.status_code == 200:
            return response.text
        else:
            return None
        return None
    except RequestException:
        return None


def parse_one_page(text, id):
    html = etree.HTML(text)
    ranking = html.xpath(\'//*[@id="rankWrap"]/div[2]/ul/li/span[3]//text()\')
    #top3的text()文本信息在strong标签下,是span的子孙节点,所以用//
    title = html.xpath(\'//*[@id="rankWrap"]/div[2]/ul/li/@title\')
    length = html.xpath(\'//*[@id="rankWrap"]/div[2]/ul/li/span[4]/span/text()\')
    if (id == 1):
        ranking = [i for i in ranking if i.strip() != \'\']
    #去除第一页提取到的空白信息
    for i in range(len(length)):
        yield {
            \'ranking\': ranking[i].strip(),
            \'singer\': title[i].split(\'-\')[0].strip(),
            #以-分割,取第0个,并去除首尾空白
            \'song\': title[i].split(\'-\')[1].strip(),
            \'length\': length[i].strip()
        }
        
        
def write_to_file(content):
    with open(\'kugou.txt\', \'a\', encoding=\'utf-8\') as f:
        f.write(json.dumps(content, ensure_ascii=False) + \'\n\')
        #ensure_ascii=False不为acsii码,为中文
        
    
def main(id):
    url = "http://www.kugou.com/yy/rank/home/" + str(id) + "-8888.html"
    text = get_one_page(url)
    for item in parse_one_page(text, id):
        print(item)
        write_to_file(item)
    
    
if __name__ == \'__main__\':
    for id in range(1,24):
        main(id)
        time.sleep(1)
  

 

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