Ajax 请求分析抓取百度图片

import requests
from urllib.parse import urlencode
from multiprocessing import Pool#开启多进程
from requests.exceptions import RequestException #  
import re
import json
from hashlib import md5
def page_get(url):
    try:
        html = requests.get(url)
        if html.status_code == 200:
            return html.text
        return None
    except RequestException:
        print(‘请求失败‘)
        return None

def page_html(pn):
    data = {
        ‘tn‘: ‘resultjson_com‘,‘ipn‘: ‘rj‘,‘ct‘: 201326592,‘is‘: ‘‘,‘fp‘: ‘result‘,‘queryWord‘: ‘清晰图片‘,‘cl‘: 2,‘lm‘: -1,‘ie‘: ‘utf-8‘,‘oe‘: ‘utf-8‘,‘adpicid‘: ‘‘,‘st‘: -1,‘z‘: 0,‘ic‘: 0,‘hd‘: 0,‘latest‘: 0,‘copyright‘: 0,‘word‘: ‘清晰图片‘,‘s‘: ‘‘,‘se‘: ‘‘,‘tab‘: ‘‘,‘width‘: 1920,‘height‘: 1080,‘face‘: ‘‘,‘istype‘: ‘‘,‘qc‘: ‘‘,‘nc‘: 1,‘fr‘: ‘‘,‘expermode‘: ‘‘,‘force‘: ‘‘,‘pn‘: pn,‘rn‘: 30,‘gsm‘: ‘1e‘,‘1561179768452‘: ‘‘
    }
    url = ‘https://image.baidu.com/search/acjson?‘+ urlencode(data)
    html = page_get(url)
    for item in page_re(html):
        print(item)
def page_re(html):
    srt = re.compile(‘.*?fromPageTitle":"(.*?)",.*?thumbURL":"(.*?)",.*?middleURL":"(.*?)",.*?hoverURL":"(.*?)",‘,re.S)
    srt = re.findall(srt,html)
    for item in srt:
        wrire_to(item[1])
        yield {
            ‘名称‘:item[0],‘img‘:item[1]
        }
def wrire_to(url):
    try:
        html = requests.get(url)
        if html.status_code == 200:
            asve_img(html.content)
        return None
    except RequestException:
        print(‘请求失败‘)
        return None
def asve_img(content):
    file_path = ‘{0}/{1}.{2}‘.format(r‘C:UsersAdministratorDesktopimg‘,md5(content).hexdigest(),‘jpg‘)
    # if not os.path.exists(file_path):
    with open(file_path,‘wb‘) as f:
        f.write(content)
        f.close()
def main():
    # for i in range(10):
    #     page_html(i*30)
    pool = Pool()
    pool.map(page_html,[i*30 for i in range(10)])
    # html = page_html(30)

if __name__ == ‘__main__‘:
    main()