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//爬虫爬取图片其实是很简单的,但是大多数同学,可能对 url的设置一直有困惑(这点本人也在研究),而本篇文章,对于想要爬取图片的小白简直是福利。你只需要将文章代码运行即可,根据报错安装对应包,然后顺利运行得到想要的结果,原作者在这里给的网址是百度图片-发现多彩世界 (baidu.com),这里面是图片的专属网站,基本上什么图片都有,你只需要根据代码提示,输入对应关键词,代码会自动识别。
- import re
- import requests
- from urllib import error
- from bs4 import BeautifulSoup
- import os
-
- num = 0
- numPicture = 0
- file = ''
- List = []
-
-
- # 根据地址去查找 对应的图片的信息
- def Find(url, A):
- global List # 保存信息的列表
- print('正在检测图片总数,请稍等.....')
- t = 0
- i = 1
- s = 0
- while t < 1000:
- # 时间戳 不简单刷新访问网址
- Url = url + str(t)
- try:
- # get获取数据
- Result = A.get(Url, timeout=7, allow_redirects=False)
- except BaseException:
- t = t + 60
- continue
- else:
- # 拿到网站的数据
- result = Result.text
- # 找到图片url
- pic_url = re.findall('"objURL":"(.*?)",', result, re.S)
- # 图片总数
- s += len(pic_url)
- if len(pic_url) == 0:
- break
- else:
- List.append(pic_url)
- t = t + 60
- return s
-
-
- # 记录相关数据
- def recommend(url):
- Re = []
- try:
- html = requests.get(url, allow_redirects=False)
- except error.HTTPError as e:
- return
- else:
- html.encoding = 'utf-8'
- # html文件解析
- bsObj = BeautifulSoup(html.text, 'html.parser')
- div = bsObj.find('div', id='topRS')
- if div is not None:
- listA = div.findAll('a')
- for i in listA:
- if i is not None:
- Re.append(i.get_text())
- return Re
-
-
- # 下载图片
- def dowmloadPicture(html, keyword):
- global num
- # 找到图片url
- pic_url = re.findall('"objURL":"(.*?)",', html, re.S)
- print('找到关键词:' + keyword + '的图片,开始下载图片....')
- for each in pic_url:
- print('正在下载第' + str(num + 1) + '张图片,图片地址:' + str(each))
- try:
- if each is not None:
- pic = requests.get(each, timeout=7)
- else:
- continue
- except BaseException:
- print('错误,当前图片无法下载')
- continue
- else:
- string = file + r'\\' + str(num) + '.jpg'
- fp = open(string, 'wb')
- fp.write(pic.content)
- fp.close()
- num += 1
- if num >= numPicture:
- return
-
-
- if __name__ == '__main__': # 主函数入口
- # 模拟浏览器 请求数据 伪装成浏览器向网页提取服务
- headers = {
- 'Accept-Language': 'zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2',
- 'Connection': 'keep-alive',
- 'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0',
- 'Upgrade-Insecure-Requests': '1'
- }
-
- # 创建一个请求的会话
- A = requests.Session()
- # 设置头部信息
- A.headers = headers
-
- word = input("输入要搜索的关键词:")
- # 拼接路径
- url = 'https://image.baidu.com/search/flip?ct=201326592&cl=2&st=-1&lm=-1&nc=1&ie=utf-8&tn=baiduimage&ipn=r&rps=1&pv=&fm=rs1&word=' + word
-
- # 根据路径去查找
- total = Find(url, A)
- # 记录相关推荐图片
- Recommend = recommend(url)
- print('经过检测%s类图片共有%d张' % (word, total))
-
- numPicture = int(input('输入要下载的数量'))
- file = input('请建立一个存储图片的文件夹,输入文件夹名称即可: ')
- y = os.path.exists(file)
- if y == 1:
- print('该文件已存在,请重新输入')
- file = input('请建立一个存储图片的文件夹,)输入文件夹名称即可: ')
- os.mkdir(file)
- else:
- os.mkdir(file)
-
- t = 0
- tmp = url
-
- while t < numPicture:
- try:
- url = tmp + str(t)
- result = requests.get(url, timeout=10)
- print(url)
- except error.HTTPError as e:
- print('网络错误,请调整网络后重试')
- t = t + 60
- else:
- dowmloadPicture(result.text, word)
- t = t + 60
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