动态网页图片爬取【requests + re】

 单页下载

import requests
import re
 
url = 'http://image.baidu.com/search/index'
date = {
    'cl': '2',
    'ct': '201326592',
          'fp': 'result',
          'gsm': '1e',
          'ie': 'utf-8',
          'ipn': 'rj',
          'istype': '2',
          'lm': '-1',
          'nc': '1',
          'oe': 'utf-8',
          'pn': '30',
          'queryword': '唯美意境图片',
          'rn': '30',
          'st': '-1',
          'tn': 'resultjson_com',
          'word': '唯美意境图片'
}

headers = {
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0',
    'Accept': 'text/plain, */*; q=0.01',
    'Accept-Language': 'zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3',
    'Accept-Encoding': 'gzip, deflate',
    'X-Requested-With': 'XMLHttpRequest',
    'Referer': 'http://image.baidu.com/search/index?ct=201326592&cl=2&st=-1&lm=-1&nc=1&ie=utf-8&tn=baiduimage&ipn=r&rps=1&pv=&fm=rs3&word=%E5%94%AF%E7%BE%8E%E6%84%8F%E5%A2%83%E5%9B%BE%E7%89%87&ofr=%E9%AB%98%E6%B8%85%E6%91%84%E5%BD%B1',
    'Cookie': 'BDqhfp=%E5%94%AF%E7%BE%8E%E6%84%8F%E5%A2%83%E5%9B%BE%E7%89%87%26%26NaN-1undefined-1undefined%26%260%26%261; Hm_lvt_737dbb498415dd39d8abf5bc2404b290=1455016371,1455712809,1455769605,1455772886; PSTM=1454309602; BAIDUID=E5493FD55CFE5424BA25B1996943B3B6:FG=1; BIDUPSID=B7D6D9EFA208B7B8C7CB6EF8F827BD4E; BDUSS=VSeFB6UXBmRWc3UEdFeXhKOFRvQm4ySmVmTkVEN2N0bldnM2o5RHdyaE54ZDlXQVFBQUFBJCQAAAAAAAAAAAEAAABzhCtU3Mbj5cfl0e8AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAE04uFZNOLhWZW; H_PS_PSSID=1447_18282_17946_15479_12166_18086_10634; Hm_lpvt_737dbb498415dd39d8abf5bc2404b290=1455788775; firstShowTip=1; BDRCVFR[-pGxjrCMryR]=mk3SLVN4HKm; BDRCVFR[dG2JNJb_ajR]=mk3SLVN4HKm',
    'Connection': 'keep-alive'
}
 
 
def get_page(url, date, headers):
    page = requests.get(url, date, headers=headers).text
    return page
 
 
def get_img(page, headers):
    reg = re.compile('http://.*?\.jpg')
    imglist = re.findall(reg, page)[::3]
    for i in imglist:
        print(i)
    x = 0
    for imgurl in imglist:
        with open('C:/Users/Lenovo/Desktop/Pic/%s.jpg' % x, 'wb') as file:
            file.write(requests.get(imgurl, headers=headers).content)
            x += 1
 
if __name__ == '__main__':
    page = get_page(url, date, headers)
    get_img(page, headers)

 多页下载

# coding = utf-8
import urllib.request
import re
import  requests
 
def getDatas(keyword,pages):
    params=[]
    for i in range(30,30*pages+30,30):
        params.append({
                      'tn': 'resultjson_com',
                      'ipn': 'rj',
                      'ct': 201326592,
                      'is': '',
                      'fp': 'result',
                      'queryWord': keyword,
                      'cl': 2,
                      'lm': -1,
                      'ie': 'utf-8',
                      'oe': 'utf-8',
                      'adpicid': '',
                      'st': -1,
                      'z': '',
                      'ic': 0,
                      'word': keyword,
                      's': '',
                      'se': '',
                      'tab': '',
                      'width': '',
                      'height': '',
                      'face': 0,
                      'istype': 2,
                      'qc': '',
                      'nc': 1,
                      'fr': '',
                      'pn': i,
                      'rn': 30,
                      'gsm': '1e',
                      '1526377465547': ''
                  })
    url = 'https://image.baidu.com/search/index'
    urls = []
    for i in params:
        urls.append(requests.get(url,params=i).json().get('data'))
 
    return urls
 
def getImg(datalist,path):
    x=0
    for list in datalist:
        for i in list:
            if i.get('thumbURL') != None:
                print('正在下载：%s' % i.get('thumbURL'))
                urllib.request.urlretrieve(i.get('thumbURL'), path+'%d.jpg'%x)
                x += 1
            else:
                print('图片链接不存在')
 
 
if __name__ == '__main__':
    search = input("输入搜索内容:")
    page_num = int(input('输入页数:'))
    datalist=getDatas(search,page_num)
    getImg(datalist,'C:/Users/Lenovo/Desktop/Pic/')

根据第一个单页改的多页爬取

import requests
import re
 
url = 'http://image.baidu.com/search/index'

headers = {
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0',
    'Accept': 'text/plain, */*; q=0.01',
    'Accept-Language': 'zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3',
    'Accept-Encoding': 'gzip, deflate',
    'X-Requested-With': 'XMLHttpRequest',
    'Referer': 'http://image.baidu.com/search/index?ct=201326592&cl=2&st=-1&lm=-1&nc=1&ie=utf-8&tn=baiduimage&ipn=r&rps=1&pv=&fm=rs3&word=%E5%94%AF%E7%BE%8E%E6%84%8F%E5%A2%83%E5%9B%BE%E7%89%87&ofr=%E9%AB%98%E6%B8%85%E6%91%84%E5%BD%B1',
    'Cookie': 'BDqhfp=%E5%94%AF%E7%BE%8E%E6%84%8F%E5%A2%83%E5%9B%BE%E7%89%87%26%26NaN-1undefined-1undefined%26%260%26%261; Hm_lvt_737dbb498415dd39d8abf5bc2404b290=1455016371,1455712809,1455769605,1455772886; PSTM=1454309602; BAIDUID=E5493FD55CFE5424BA25B1996943B3B6:FG=1; BIDUPSID=B7D6D9EFA208B7B8C7CB6EF8F827BD4E; BDUSS=VSeFB6UXBmRWc3UEdFeXhKOFRvQm4ySmVmTkVEN2N0bldnM2o5RHdyaE54ZDlXQVFBQUFBJCQAAAAAAAAAAAEAAABzhCtU3Mbj5cfl0e8AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAE04uFZNOLhWZW; H_PS_PSSID=1447_18282_17946_15479_12166_18086_10634; Hm_lpvt_737dbb498415dd39d8abf5bc2404b290=1455788775; firstShowTip=1; BDRCVFR[-pGxjrCMryR]=mk3SLVN4HKm; BDRCVFR[dG2JNJb_ajR]=mk3SLVN4HKm',
    'Connection': 'keep-alive'
}

 
def get_page(url):
    dates = []
    for i in range(1,4):#三页
        dates.append({
          'cl': '2',
          'ct': '201326592',  
          'fp': 'result',
          'gsm': '1e',
          'ie': 'utf-8',
          'ipn': 'rj',
          'istype': '2',
          'lm': '-1',
          'nc': '1',
          'oe': 'utf-8',
          'pn': 30*i,
          'queryword': '唯美意境图片',
          'rn': '30',
          'st': '-1',
          'tn': 'resultjson_com',
          'word': '唯美意境图片'
    })
    pages = []
    for i in dates:
        page = requests.get(url, i, headers=headers).text
        pages.append(page)
    return pages
 
 
def get_img(pages):
    allimglist = []
    reg = re.compile('http://.*?\.jpg')
    #imglist = re.findall(reg, page)[::3]
    for i in pages:
        l = re.findall(reg,i)[::3]
        allimglist += l

    x = 1
    for i in allimglist:
        with open('C:/Users/Lenovo/Desktop/Pic/%s.jpg' % x, 'wb') as file:
            file.write(requests.get(i, headers=headers).content)
            x += 1
    
 
if __name__ == '__main__':
    pages = get_page(url)
    get_img(pages)