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思路:

1、获取JS源代码
2、获取英雄ID
3、拼接完整路径
4、下载的位置
5、下载

import requests
import re
import json

    #获取JS源代码
def download_image():
    js_url = 'https://lol.qq/biz/hero/champion.js'
    js_html = requests.get(js_url).text
    #状态码  200:请求成功  404:页面未找到
    # print(js_html)

    # 正则表达式
    req = r'"keys":(.*?),"data"'
    hero_list = re.findall(req,js_html)
    #字符串
    hero_list = hero_list[0]
    #str-->json
    dict_hero = json.loads(hero_list)


    #获取英雄ID
    list_hero_url = []
    for hero_id in dict_hero:
        #print(hero_id)
        for i in range(20):
            i = str(i)
            if len(i) == 1:
                hero_num = "00" + i
            elif len(i) == 2:
                hero_num = "0" + i
            url = 'https://ossweb-img.qq/images/lol' \
              '/web201310/skin/big'+ hero_id + hero_num +'.jpg'
            list_hero_url.append(url)
    #print(list_hero_url)

#拼接
    file_path = []
    for hero_name in dict_hero.values():
        print(hero_name)
        path = r'C:\Users\Administrator\PycharmProjects\Test1\2018_11_16爬虫练习\LOLpic\\'
        for i in range(20):
            files = path + hero_name + str(i) + ".jpg"
            file_path.append(files)


#下载
    num = 0
    for i in list_hero_url:
        # print(i)
        if requests.get(i).status_code == 200:
            content = requests.get(i).content
            #print(content)  二进制文件

            # print("正在下载%s"%file_path[num])
            f = open(file_path[num],'wb')
            f.write(content)
            f.close()

        num += 1

def main():
    download_image()

if __name__ == '__main__':
    main()

完成效果如下图:

我这个仅供大家参考,写的还不是很完美,根据思路可以把每个步骤都写到单独的方法中去,大家去试试吧!

本文标签: 英雄官网皮肤联盟Python