Python爬虫系列之图片采集

Python爬虫系列之图片采集

代码仅供学习交流，请勿用于非法用途

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import urllib.request
import re
import time
'''
	@Author:王磊
	@Time  :2018/11/11 19:36:25
'''

'''图片起始索引'''
index = 0
'''请求头(注意：请求头里面的cookie请访问站点，F12请求头里面复制更换)'''
header = {"User-Agent": "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.221 Safari/537.36 SE 2.X MetaSr 1.0", "Cookie":"__tins__2318434=%7B%22sid%22%3A%201540469731009%2C%20%22vd%22%3A%202%2C%20%22expires%22%3A%201540471922827%7B; __51cke__=; __51laig__=2", "Host":"www.plantphoto.cn", "Upgrade-Insecure-Requests":"1"}
for i in range(1,10000):
	'''range值大小为你需要的总页数-1'''
    print("开始下载第%d页！" % i)
    page = urllib.request.Request('http://www.plantphoto.cn/ashx/getphotopage.ashx?page=' + str(i) + '&n=2&group=sp&cid=13253', headers=header)
    html_index = urllib.request.urlopen(page).read().decode('utf-8')
    reg_pid = re.compile(r"
)
    pid_list = re.findall(reg_pid, html_index)
    for pid in pid_list:
        url = "http://www.plantphoto.cn/ashx/getotherinfo.ashx?t=specimens&pid=" + pid + "&r=0.3258786330122887"
        page_second = urllib.request.Request(url, headers=header)
        html_second = urllib.request.urlopen(page_second).read().decode('utf-8')
        reg_second = re.compile(r'"pid":"(.*?)"')
        img_id = re.findall(reg_second, html_second)
        for img in img_id:
            urllib.request.urlretrieve("http://img.plantphoto.cn/image2/b/" + img + ".jpg", "C:\\Users\\asus\\Desktop\\n\\" + str(index) + ".jpg")
            print("成功下载第%d张！" % index)
            index += 1
        time.sleep(5)
    time.sleep(5)
print("over")

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