爬虫小练习：堆糖图片抓取--爬虫正式学习day1

#菠萝tang
#coding:utf-8
import urllib2
import urllib
import os
import time
import json
import jsonpath

def handle_request(url, sort, page ):
    qurey_string = '&type=feed&include_fields=top_comments%2Cis_root%2Csource_link%2Citem%2Cbuyable%2Croot_id%2Cstatus%2Clike_count%2Clike_id%2Csender%2Calbum%2Creply_count%2Cfavorite_blog_id&_type=&'
    url_use = url + sort + qurey_string + 'start=' + str(24*page)
    headers = {
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36',
    }
    request = urllib2.Request(url=url_use, headers=headers)
    return request

def download_image(content):
    unicodestr = json.loads(content)
    url_list = jsonpath.jsonpath(unicodestr, "$..path")
    for li in url_list:
        dirname = 'DuiTang'
        if not os.path.exists(dirname):
            os.mkdir(dirname)
        filename = li.split('/')[-1]
        # print(filename)
        filepath = dirname + '/' + filename
        # print(filepath)
        urllib.urlretrieve(li, filepath)
        time.sleep(1)


def main():
    url = 'https://www.duitang.com/napi/blog/list/by_search/?kw='
    start_page = int(input("请输入起始抓取位置（24个图为一个部分）："))
    end_page = int(input("请输入终止抓取位置："))
    sort = raw_input("请输入查询的种类:")

    for page in range(start_page-1, end_page):
        print('第%s部分开始下载......'%(page+1))
        request = handle_request(url, sort, page)
        content = urllib2.urlopen(request).read()
        print(content)
    #     #解析内容，提取所有图片链接，下载图片
        download_image(content)
        print('第%s部分下载完成' %(page+1))
        time.sleep(2)


if __name__ == '__main__':
    main()

#使用python2.7

#堆糖的图片显示是按照json来的，分页只是障眼法，主要参数为：kw、和start位置！

#获取json数据需要努力学习！！！

#unicodestr = json.loads(content)

#url_list = jsonpath.jsonpath(unicodestr, "$..path")