python-爬虫篇-英雄联盟皮肤爬图

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#!/usr/bin/env python
# -*- coding: utf-8 -*-"""
抓取英雄联盟英雄全皮肤
"""import requests
import json
from urllib import parse
import osclass GetLolSkin(object):"""抓取LOL英雄皮肤"""def __init__(self):"""初始化变量"""self.hero_url = 'https://lol.qq.com/biz/hero/champion.js'self.hero_detail_url = 'http://lol.qq.com/biz/hero/'self.skin_folder = 'skin'self.skin_url = 'https://ossweb-img.qq.com/images/lol/web201310/skin/big'@staticmethoddef get_html(url):"""下载html"""request = requests.get(url)request.encoding = 'gbk'if request.status_code == 200:return request.textelse:return "{}"def get_hero_list(self):"""获取英雄的完整信息列表"""hero_js = self.get_html(self.hero_url)# 删除左右的多余信息，得到json数据out_left = "if(!LOLherojs)var LOLherojs={};LOLherojs.champion="out_right = ';'hero_list = hero_js.replace(out_left, '').rstrip(out_right)return json.loads(hero_list)def get_hero_info(self, hero_id):"""获取英雄的详细信息"""# 获取js详情detail_url = parse.urljoin(self.hero_detail_url, hero_id + '.js')detail_js = self.get_html(detail_url)# 删除左右的多余信息，得到json数据out_left = "if(!herojs)var herojs={champion:{}};herojs['champion'][%s]=" % hero_idout_right = ';'hero_info = detail_js.replace(out_left, '').rstrip(out_right)return json.loads(hero_info)def download_skin_list(self, skin_list, hero_name):"""下载皮肤列表"""# 循环下载皮肤for skin_info in skin_list:# 拼接图片名字if skin_info['name'] == 'default':skin_name = '默认皮肤'else:if ' ' in skin_info['name']:name_info = skin_info['name'].split(' ')skin_name = name_info[0]else:skin_name = skin_info['name']hero_skin_name = hero_name + '-' + skin_name + '.jpg'self.download_skin(skin_info['id'], hero_skin_name)def download_skin(self, skin_id, skin_name):"""下载皮肤图片"""# 下载图片img_url = self.skin_url + skin_id + '.jpg'request = requests.get(img_url)if request.status_code == 200:print('downloading……%s' % skin_name)img_path = os.path.join(self.skin_folder, skin_name)with open(img_path, 'wb') as img:img.write(request.content)else:print('img error!')def make_folder(self):"""初始化，创建图片文件夹"""if not os.path.exists(self.skin_folder):os.mkdir(self.skin_folder)def run(self):# 获取英雄列表信息hero_json = self.get_hero_list()hero_keys = hero_json['keys']# 循环遍历英雄for hero_id, hero_code in hero_keys.items():hero_name = hero_json['data'][hero_code]['name']hero_info = self.get_hero_info(hero_id)if hero_info:skin_list = hero_info['result'][hero_id]['skins']# 下载皮肤self.download_skin_list(skin_list, hero_name)else:print('英雄【%s】的皮肤获取有问题……' % hero_name)# 程序执行入口
if __name__ == '__main__':lol = GetLolSkin()# 创建图片存储文件lol.make_folder()# 执行脚本lol.run()

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