requests_spider 0.0.8

Description:

requests spider 0.0.8

<div align=center><img src="./spider.png"></div>## 描述requests_spider 是一个轻量级的异步爬虫框架，基于requests_html进行二次开发，类似flask## 安装pip install requests_spider## 依赖python: > 3.6uvlooprequests_html## 用法##### 基础例子```python3import jsonfrom spider import XField, Spider, Model, Response, Requestclass Proxy(Model): ip = XField(rule='//tr[contains(@class, "odd")]/td[2]', first=False) port = XField(rule='//tr[contains(@class, "odd")]/td[3]', first=False) async def process(self, response: Response): with open('proxy1.txt', 'a+') as file: for result in self.merge(): file.write(json.dumps(result) + '\n')spider = Spider('proxy', workers=15)spider.domains = ['www.xicidaili.com']spider.init_requests = [ Request(url='http://www.xicidaili.com/nn/{}'.format(x), model=Proxy) for x in range(1, 10)]spider.async_limit = 5if __name__ == '__main__': spider.run()```爬取代理网站ip##### 中间组件```python3import randomimport refrom spider import Spider, Request, XRequest, Model, XField, RField, Response, Field, asyncio# 获取某个用户的所有的视频信息 ===> 获取aid / pagevideos_url = "https://space.bilibili.com/ajax/member/getSubmitVideos?mid={mid}" \ "&pagesize=30&tid=0&page={page}&keyword=&order=pubdate"# 某个视频推荐的视频 ===> 获取aidrecommend_url = "https://comment.bilibili.com/playtag,{cid}-{aid}?html5=1"# 用户信息 post csrf/miduser_url = "https://space.bilibili.com/ajax/member/GetInfo"# av页面，====> 获取下载视频的url、cid-aid, midav_url = "https://www.bilibili.com/video/av{aid}"class AV(Model): urls = RField(rule='"url":"(.*?)","backup_url"', first=False) cid = RField(rule='cid=(.*?)&aid=') aid = RField(rule='&aid=(.*?)&pre_ad=') mid = RField(rule='"owner":{"mid":(.*?),') async def process(self, response: Response): print(self['urls']) print(self['cid']) print(self['aid']) print(self['mid']) print(self.json()) if self['mid'] and self['aid'] and self['urls'] and self['cid']: # 推荐视频 yield Request(url=recommend_url.format(cid=self['cid'], aid=self['aid']), model=Recommend) # 用户信息 yield Request(url=user_url, method='POST', data={'csrf': '', 'mid': self['mid']}, model=UserInfo, not_filter=True) # 下载视频 for order, url in enumerate(self['urls']): yield Request(url=url.replace('http', 'https'), meta={'name': self['aid'] + '_' + str(order)}, model=Video)class UserInfo(Model): mid = Field() name = Field() sex = Field() rank = Field() face = Field() regtime = Field() birthday = Field() sign = Field() level_info = Field() async def process(self, response: Response): status = response.json().get('status') if status: data = response.json().get('data') for k in self.keys(): if k in data: self[k] = data[k] with open('user_' + str(self['mid']) + '.txt', 'w') as f: f.write(self.dumps() + '\n')class Recommend(Model): async def process(self, response: Response): for data in response.json(): yield Request(av_url.format(aid=data[1]), model=AV)class VideoInfo(Model): async def process(self, response: Response): status = response.json().get('status') if status: data = response.json().get('data') pattern = 'mid=(\d+?)&pagesize=30&tid=0&page=(\d+?)&keyword=&order=pubdate' patn = re.findall(pattern, response.url)[0] print(patn) yield Request(url=videos_url.format(mid=patn[0], page=int(patn[1]) + 1), model=VideoInfo), for v in data['vlist']: yield Request(url=av_url.format(aid=v.get('aid')), model=AV)class Video(Model): async def process(self, response: Response): file_name = response.current_request.meta.get('name') if file_name and response.status_code == 200: with open(file_name + '.mp4', 'wb') as f: for content in response.iter_content(chunk_size=512): f.write(content) f.flush()spider = Spider('bilibili', workers=5)spider.init_requests = [ Request(url=videos_url.format(mid='35789774', page=1), model=VideoInfo),]spider.async_limit = [email protected]('request')async def test(request): print(request.url) if request.url.startswith('https://space.bilibili.com/'): request.info.update({'headers': {'Referer': 'https://space.bilibili.com/'}}) else: request.info.update({'headers': {'Referer': 'https://bilibili.com/'}}) asyncio.sleep(round(random.random() * 5)) return requestif __name__ == '__main__': spider.run()```爬取bilibili用户视频，用户资料，视频资料，利用中间组件进行切换headers## API#### Spider继承requests_html的HTMLSession- **Spider.async_limit** 利用asyncio.Semaphore限制并发数量- **Spider.queue_timeout** 从队列获取数据时候超时设置- **Spider.request_depth** 请求的深度- **Spider.init_requests** 初始化请求- **Spider.domains** 爬取域名设置- **Spider.rules** 从响应的数据中获取下次请求的信息，并加入队列- **Spider.Middleware** 中间组件 Middleware('request'), request入队之前执行，返回request, response, None Middleware('response'), response入队之前，返回request, response, None##### ModelModel类似一个字典的数据模型- **Model.keys** 类似字典的keys- **Model.values** 类似字典的values- **Model.items** 类似字典的items- **Model.json** 获取所有Field的字典形式- **Model.dumps** 获取所有的Field的字符串- **Model.merge** 当所有的Field从响应数据获取的数据是列表的时候，将获取的列表合并成为json数据- **Model.process** 处理响应数据##### Field- **Field** 不处理或待处理数据项- **XField** 利用xpath从响应数据中获取数据- **CField** 利用css获取数据- **RField** 利用正则获取数据##### Request- **Request** 正常的请求- **XRequest** 利用xpath, 用于Spider.rules- **RRequest** 利用正则，用于Spider.rules## 例子examples目录下bilibili.py 爬取哔哩哔哩用户信息、视频信息和视频qidian.py 爬取起点小说月票排行包括评分proxy.py 爬取代理ip网站代理pearvideo.py 爬取梨视频网站的视频# LicenseMIT