05爬取约会吧美女全部照片

# 爬虫思路：首先找到约会吧的链接地址，
# 然后获取网页，从中提取出每个发消息用户的详情页，找到存放图片的详情页链接，
# 根据地址爬取图片
import requests,parsel

# 用来获取约会吧主页的函数
def get_yuehuiba_url(url,headers):
    # 通过requests库获取网页html代码
    response = requests.get(url = url,headers = headers).text
    # 通过parsel解析出我们需要的内容
    html = parsel.Selector(response)
    title_url = html.xpath('//div[@class="threadlist_lz clearfix"]/div/a/@href').getall()
    print(title_url)
    return title_url
# 用来获取每个人详情页
def get_image(headers,title_url):
    # 刚才解析出的详情页的url链接，需要加上贴吧的主页链接才可以访问
    second_url = "https://tieba.baidu.com"
    # title_url中存放的是每一个详情页的链接
    result_lists = []
    for url in title_url:
        all_url = second_url + url
        print("当前的贴子链接：",all_url)
        # 再次发送链接，进入帖子内部
        response_2 = requests.get(url = all_url,headers = headers).text
        # 第二次解析，解析出每一个妹子照片的链接，并存放在列表中
        response_2_data = parsel.Selector(response_2)
        result_list = response_2_data.xpath('//cc/div/img[@class="BDE_Image"]/@src').getall()
        result_lists.append(result_list)
        print(result_list)
    return result_lists
# 获取每张妹子粘片并保存
def save_image(result_lists,headers):
    for result_list in result_lists:
        for li in result_list:
            # 通过访问每一个详情页的链接，下载妹子的照片，
            # 这里和上边不一样，这里获取的是二进制数据
            print(li)
            img_data = requests.get(url = li,headers = headers).content
            file_name = li.split("/")[-1]
            file_name = r"D:\python\贴吧美女\{}.jpg".format(file_name)
            # 然后写入特定的文件夹
            with open(file_name,mode = 'wb') as f:
                f.write(img_data)
                print("正在保存",file_name)



if __name__ == "__main__":
    # 定义变量存放约会吧的链接地址
    yuehuiba_url = "https://tieba.baidu.com/f?ie=utf-8&kw=%E7%BA%A6%E4%BC%9A%E5%90%A7&fr=search"
    headers = {
        "User-Agent": "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0;"
    }
    title_url = get_yuehuiba_url(yuehuiba_url,headers)
    result_lists = get_image(headers,title_url)
    save_image(result_lists,headers)