Python实战---王者荣耀皮肤爬虫

方法1

见注释

# 导入所需要的模块import urllib.requestimport jsonimport os# 获取响应头文件  response = urllib.request.urlopen("http://pvp.qq.com/web201605/js/herolist.json")# 读取英雄列表，并存入hero_json中hero_json = json.loads(response.read())hero_num = len(hero_json)# 保存路径save_dir = "Dheroskin//"# 检查路劲是否存在，不存在则创建路径if not os.path.exists(save_dir): os.mkdir(save_dir)  for i in range(hero_num):  # 获取英雄皮肤列表  skin_names = hero_json[i]["skin_name"].split("|")  for cnt in range(len(skin_names)):   save_file_name = save_dir + str(hero_json[i]["ename"]) + "-" +hero_json[i]["cname"]+ "-" +skin_names[cnt] + ".jpg"   skin_url = "http://game.gtimg.cn/images/yxzj/img201606/skin/hero-info/"+str(hero_json[i]["ename"])+ "/" +str(hero_json[i]["ename"])+"-bigskin-" + str(cnt+1) +".jpg"   print(skin_url)# 检查图片文件是否存在，如果存在则跳过下载   if not os.path.exists(save_file_name):    urllib.request.urlretrieve(skin_url, save_file_name)

效果展示如下

方法2

见注释

import requestsimport reimport jsonimport osimport time# 获取当前时间戳，用于计算爬虫爬取完毕消耗了多少时间now = lambda: time.time()# 请求头headers = {    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.36",    "Cookie": "pgv_pvid=120529985; pgv_pvi=8147644416; RK=iSx1Z7fSHW; ptcz=d094d0d03f513f6762a4c18a13ddae168782ec153f43b16b604723b27069d0a7; luin=o0894028891; lskey=000100008bc32936da345e2a5268733bf022b5be1613bd2600c10ad315c7559ff138e170f30e0dcd6a325a38; tvfe_boss_uuid=8f47030b9d8237f7; o_cookie=894028891; LW_sid=s116T01788a5f6T2U8I0j4F1K8; LW_uid=Z1q620M7a8E5G6b2m8p0R4U280; eas_sid=m1j6R057x88566P2Z8k074T2N7; eas_entry=https%3A%2F%2Fcn.bing.com%2F; pgv_si=s8425377792; PTTuserFirstTime=1607817600000; isHostDate=18609; isOsSysDate=18609; PTTosSysFirstTime=1607817600000; isOsDate=18609; PTTosFirstTime=1607817600000; pgv_info=ssid=s5339727114; ts_refer=cn.bing.com/; ts_uid=120529985; weekloop=0-0-0-51; ieg_ingame_userid=Qh3nEjEJwxHvg8utb4rT2AJKkM0fsWng; pvpqqcomrouteLine=index_herolist_herolist_herodetail_herodetail_herodetail_herodetail; ts_last=pvp.qq.com/web201605/herolist.shtml; PTTDate=1607856398243",    "referer": "https://pvp.qq.com/"}# 解析函数，返回文本或者二进制或者Nonedef parse_url(url, get_b=False):    try:        response = requests.get(url, headers=headers)        response.encoding = "gbk"        assert response.status_code == 200        if get_b == True:            return response.content        else:            return response.text    except:        print("status_code != 200(from parse_url)")        return None# 处理单个英雄def parse_hero_detail(id, name):    # 保存所有皮肤图片的本地路径    path = f"./英雄皮肤/{name}"    if not os.path.exists(path):        os.makedirs(path, exist_ok=True)    # 因为不确定每个英雄有多少个皮肤，所以假设单个英雄一共请求10张皮肤，这样就不会出现皮肤缺少的情况    for num in range(1, 11):        # 单个英雄皮肤图片的url链接        api_url = f"https://game.gtimg.cn/images/yxzj/img201606/skin/hero-info/{id}/{id}-bigskin-{num}.jpg"        # 如果返回None，则说明状态码不是200，即没有这个请求的皮肤        b_data = parse_url(api_url, get_b=True)        if b_data == None:            print(f"{name} 一共有{num - 1}个皮肤")            print("--------------------------------------------------")            # 没有新的皮肤了，立即退出循环            break        img_path = f"{path}/demo{num}.jpg"        if not os.path.exists(img_path):            try:                download_img(img_path, b_data)            except:                return            print(f"{name} 第{num}张皮肤图片 下载完毕")# 下载图片def download_img(path, b_data):    with open(path, "wb") as f:        f.write(b_data)def main():    # 含有每个英雄对应的id、英雄名称的url    api_url = "https://game.gtimg.cn/images/yxzj/web201706/js/heroid.js"    text = parse_url(api_url)    search_result = re.search("var module_exports = ({.*?})", text, re.S)    hero_info_str = search_result.group(1)    hero_info_str = re.sub(""", """, hero_info_str)    # 包含 所有英雄以及各自对应的id 的字典    hero_info_dict = json.loads(hero_info_str)    for hero in hero_info_dict:        name, id = hero_info_dict[hero], hero        print(name, id)        parse_hero_detail(id, name)if __name__ == "__main__":    start = now()                       # 记录起始时间    main()                              # 主函数    print(f"耗时: {now() - start}")     # 计算爬虫执行完毕消耗的时间