python爬虫抓取头条街拍美女图片

偏执的太偏执、 2022-04-25 10:42 301阅读 0赞

开发环境：windows 7

开发工具：pycharm

python版本：python 3.7

用到的库：os，urllib，requests，hashlib

关键步骤：

1.  通过浏览器分析找到请求接口
2.  分析接口返回的内容及数据格式
3.  提取出图片链接
4.  将图片保存到本地

实现代码：

# coding = utf-8
    # author: Alvin
    
    import os
    import requests
    from urllib.parse import urlencode
    from hashlib import md5
    
    def get_page(offset):
        params = {
            'offset': offset,
            'format': 'json',
            'keyword': '街拍',
            'autoload': 'true',
            'count': '20',
            'cur_tab': '1'
        }
    
        url = 'https://www.toutiao.com/search_content/?' + urlencode(params)
        user_agent = 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like     Gecko) Chrome/68.0.3440.84 Safari/537.36'
        headers = {
        'User_Agent': user_agent
        }
    
        response = requests.get(url,headers = headers)
    
        if(response.status_code == 200):
            return response.json()
    
    def get_image(json):
        data = json.get('data')
        if data:
            for item in data:
                image_list = item.get('image_list')
                title = item.get('title')
    
                if(image_list):
                    for image in image_list:
                        yield{
                            'image': image.get('url'),
                            'title': title
                        }
    
    
    def save_image(item):
        if not os.path.exists(item.get('title')):
            os.mkdir(item.get('image'))
        
        local_image_url = item.get('image')
        response = requests.get('http:' + local_image_url)
        if response.status_code == 200:
            file_path = '{0}/{1}.{2}'.format(item.get('title'),md5(response.content).hexdigest(),'jpg')
            if not os.path.exists(file_path):
                with open(file_path,'wb') as f:
                    f.write(response.content)
    
    def main(offset):
        json = get_page(offset)
        for item in get_image(json):
            print(item)
            save_image(item)
    
    if __name__ == '__main__':
        main(5)