如何使用Python抓取今日头条街拍图片数据

魁首哥

作者

如何使用Python抓取今日头条街拍图片数据

这篇文章主要介绍了如何使用Python抓取今日头条街拍图片数据，具有一定借鉴价值，感兴趣的朋友可以参考下，希望大家阅读完这篇文章之后大有收获，下面让小编带着大家一起了解一下。

（1）抓取今日头条街拍图片

（2）分析今日头条街拍图片结构

keyword:街拍pd:atlasdvpf:pcaid:4916page_num:1search_json:{"from_search_id":"20220104115420010212192151532E8188","origin_keyword":"街拍","image_keyword":"街拍"}rawJSON:1search_id:202201041159040101501341671A4749C4

可以找到规律，page_num从1开始累加，其他参数不变

（3）按功能不同编写不同方法组织代码

获取网页json格式数据

defget_page(page_num):globalheadersheaders={'Host':'so.toutiao.com',#'Referer':'https://so.toutiao.com/search?keyword=%E8%A1%97%E6%8B%8D&pd=atlas&dvpf=pc&aid=4916&page_num=0&search_json={%22from_search_id%22:%22202112272022060101510440283EE83D67%22,%22origin_keyword%22:%22%E8%A1%97%E6%8B%8D%22,%22image_keyword%22:%22%E8%A1%97%E6%8B%8D%22}','User-Agent':'Mozilla/5.0(WindowsNT10.0;WOW64)AppleWebKit/537.36(KHTML,likeGecko)Chrome/86.0.4240.198Safari/537.36','X-Requested-With':'XMLHttpRequest','Cookie':'msToken=S0DFBkZ9hmyLOGYd3_QjhhXgrm38qTyOITnkNb0t_oavfbVxuYV1JZ0tT5hLgswSfmZLFD6c2lONm_5TomUQXVXjen7CIxM2AGwbhHRYKjhg;_S_DPR=1.5;_S_IPAD=0;MONITOR_WEB_ID=7046351002275317255;ttwid=1%7C0YdWalNdIiSpIk3CvvHwV25U8drq3QAj08E8QOApXhs%7C1640607595%7C720e971d353416921df127996ed708931b4ae28a0a8691a5466347697e581ce8;_S_WIN_WH=262_623'}params={'keyword':'街拍','pd':'atlas','dvpf':'pc','aid':'4916','page_num':page_num,'search_json':'%7B%22from_search_id%22%3A%22202112272022060101510440283EE83D67%22%2C%22origin_keyword%22%3A%22%E8%A1%97%E6%8B%8D%22%2C%22image_keyword%22%3A%22%E8%A1%97%E6%8B%8D%22%7D','rawJSON':1,'search_id':'2021122721183101015104402851E3883D'}url='https://so.toutiao.com/search?'+urlencode(params)print(url)try:response=requests.get(url,headers=headers,params=params)ifresponse.status_code==200:#ifresponse.content:#print(response.json())returnresponse.json()exceptrequests.ConnectionError:returnNone

从json格式数据提取街拍图片

defget_images(json):images=json.get('rawData').get('data')forimageinimages:link=image.get('img_url')yieldlink

将街拍图片以其md5码命名并保存图片

实现一个保存图片的方法 save_image()，其中 item 就是前面 get_images() 方法返回的一个字典。在该方法中，首先根据 item 的 title 来创建文件夹，然后请求这个图片链接，获取图片的二进制数据，以二进制的形式写入文件。图片的名称可以使用其内容的 MD5 值，这样可以去除重复。相关代码如下：

defsave_image(link):data=requests.get(link).contentwithopen(f'./image/{md5(data).hexdigest()}.jpg','wb')asf:#使用data的md5码作为图片名f.write(data)

main()调用其他函数

defmain(page_num):json=get_page(page_num)forlinkinget_images(json):#print(link)save_image(link)

（4）抓取20page今日头条街拍图片数据

这里定义了分页的起始页数和终止页数，分别为 GROUP_START 和 GROUP_END，还利用了多线程的线程池，调用其 map() 方法实现多线程下载。

if__name__=='__main__':GROUP_START=1GROUP_END=20pool=Pool()groups=([xforxinrange(GROUP_START,GROUP_END+1)])#print(groups)pool.map(main,groups)pool.close()pool.join()

importrequestsfromurllib.parseimporturlencodefromhashlibimportmd5frommultiprocessing.poolimportPooldefget_page(page_num):globalheadersheaders={'Host':'so.toutiao.com',#'Referer':'https://so.toutiao.com/search?keyword=%E8%A1%97%E6%8B%8D&pd=atlas&dvpf=pc&aid=4916&page_num=0&search_json={%22from_search_id%22:%22202112272022060101510440283EE83D67%22,%22origin_keyword%22:%22%E8%A1%97%E6%8B%8D%22,%22image_keyword%22:%22%E8%A1%97%E6%8B%8D%22}','User-Agent':'Mozilla/5.0(WindowsNT10.0;WOW64)AppleWebKit/537.36(KHTML,likeGecko)Chrome/86.0.4240.198Safari/537.36','X-Requested-With':'XMLHttpRequest','Cookie':'msToken=S0DFBkZ9hmyLOGYd3_QjhhXgrm38qTyOITnkNb0t_oavfbVxuYV1JZ0tT5hLgswSfmZLFD6c2lONm_5TomUQXVXjen7CIxM2AGwbhHRYKjhg;_S_DPR=1.5;_S_IPAD=0;MONITOR_WEB_ID=7046351002275317255;ttwid=1%7C0YdWalNdIiSpIk3CvvHwV25U8drq3QAj08E8QOApXhs%7C1640607595%7C720e971d353416921df127996ed708931b4ae28a0a8691a5466347697e581ce8;_S_WIN_WH=262_623'}params={'keyword':'街拍','pd':'atlas','dvpf':'pc','aid':'4916','page_num':page_num,'search_json':'%7B%22from_search_id%22%3A%22202112272022060101510440283EE83D67%22%2C%22origin_keyword%22%3A%22%E8%A1%97%E6%8B%8D%22%2C%22image_keyword%22%3A%22%E8%A1%97%E6%8B%8D%22%7D','rawJSON':1,'search_id':'2021122721183101015104402851E3883D'}url='https://so.toutiao.com/search?'+urlencode(params)print(url)try:response=requests.get(url,headers=headers,params=params)ifresponse.status_code==200:#ifresponse.content:#print(response.json())returnresponse.json()exceptrequests.ConnectionError:returnNonedefget_images(json):images=json.get('rawData').get('data')forimageinimages:link=image.get('img_url')yieldlinkdefsave_image(link):data=requests.get(link).contentwithopen(f'./image/{md5(data).hexdigest()}.jpg','wb')asf:#使用data的md5码作为图片名f.write(data)defmain(page_num):json=get_page(page_num)forlinkinget_images(json):#print(link)save_image(link)if__name__=='__main__':GROUP_START=1GROUP_END=20pool=Pool()groups=([xforxinrange(GROUP_START,GROUP_END+1)])#print(groups)pool.map(main,groups)pool.close()pool.join()