一、需求分析
二、4k图片解析下载编码
#!/usr/bin/python
#需求:解析下载图片数据 http://pic.netbian.com/4kmeinv/
import requests
from lxml import etree
import os
if __name__ == "__main__":
url = 'http://pic.netbian.com/4kmeinv/'
headers = {
'User-Agent':'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2626.106 Safari/537.36'
}
response = requests.get(url=url,headers=headers)
#可以手动设定响应数据的编码格式
# response.encoding = 'utf-8'
page_text = response.text
#数据解析:src的属性值 alt属性
tree = etree.HTML(page_text)
li_list = tree.xpath('//div[@class="slist"]/ul/li')
# print(li_list)
#创建一个文件夹
if not os.path.exists('./picLibs'):
os.mkdir('./picLibs')
for li in li_list:
img_src = 'http://pic.netbian.com'+li.xpath('./a/img/@src')[0]
img_name = li.xpath('./a/img/@alt')[0]+'.jpg'
#通用处理处理中文乱码的解决方案
img_name = img_name.encode('iso-8859-1').decode('gbk')
# print(img_name,img_src)
#请求图片进行持久化存储
img_data = requests.get(url=img_src,headers=headers).content
img_path = 'picLibs/'+img_name
with open(img_path,'wb') as fp:
fp.write(img_data)
print(img_name,'下载成功!!!')