爬虫安居客新房

一、首先看网址

后面有全部代码

https://hf.fang.anjuke.com/loupan/baohequ/p3

这种形式很好分析，https://hf.fang.anjuke.com/loupan/+行政区域+页码

xinfang_area = ["feixixian", "baohequ", "shushanqu", "luyangqu", "yaohaiqu", "gaoxinqu","feidongxian", "zhengwuqu", "jingjikaifaqu"]  # 行政区域
url = "https://hf.fang.anjuke.com/loupan"  # 新房
new_url = f"{url}/{area}/p{n}" # 网页

我们用requests库获取页面内容，再用bs解析，获得bs对象，代码：

for area in xinfang_area:
    n = 1
    while True:
        headers = make_headers()
        if n == 1:
            new_url = f"{url}/{area}"
        else:
            new_url = f"{url}/{area}/p{n}"
        print(new_url)
        res = requests.get(new_url, headers=headers).text
        content = BeautifulSoup(res, "html.parser")
        if content is None:  # 重试
            n = 1
            continue

二、看内容

每一块的内容都是在 <div class="item-mod">标签下面

根据刚获取的页面内容（页面包含当页所有楼盘的内容），用bs的find_all根据class:item-mod获得所有块的列表，我们看看每一块的网页是什么：

根据每一块的，内容代码基本完成了：

data = content.find_all('div', attrs={'class': 'item-mod'})
for d in data:
            lp_name = d.find_next("a", attrs={"class": "lp-name"}).text
            address = d.find_next("a", attrs={"class": "address"}).text
            huxing = d.find_next("a", attrs={"class": "huxing"}).text
            tags = d.find_next("a", attrs={"class": "tags-wrap"}).text
            prices = d.find_next("a", attrs={"class": "favor-pos"}).text
            price = re.findall(r'\d+', prices)[0]  # 具体价格
            # 写入数据
            row_data = [area, lp_name, address, huxing, tags, prices, price]
            with open(file_name, 'a', encoding='utf-8') as f:
                writer = csv.writer(f)
                writer.writerow(row_data)
            m += 1
            print(area, f"第{n}页第{m}条数据")

三、换区域逻辑

不废话，直接分析

我们看到页面有下一页标签，我们对比有下一页与尾页的下一页标签的不同

这是有下一页的

这是尾页的

我们发现，如果尾页的下一页标签<span class="next-page stat-disable"> 说明是尾页了

此时我们的网页可以到下一个区域爬取了

next_page = content.find('span', attrs={'class': 'next-page stat-disable'})
if next_page is not None:  # 没有下一页
    break

四、全部代码

注意，如果没有数据可能是网页需要验证！

其他城市自己分析网页试试吧，我就不解释了

import requests
import csv
import time
import re

from bs4 import BeautifulSoup
from user_agent import make_headers




xinfang_area = ["feixixian", "baohequ", "shushanqu", "luyangqu", "yaohaiqu", "gaoxinqu",
                "feidongxian", "zhengwuqu", "jingjikaifaqu"]
url = "https://hf.fang.anjuke.com/loupan"  # 新房
file_name = 'anjuke/xinfang.csv'
headers = {"User-Agent":"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.221 Safari/537.36 SE 2.X MetaSr 1.0"}

with open(file_name, 'w', encoding='utf-8') as f:
    writer = csv.writer(f)
    # 2:写表头
    writer.writerow(['区域', '楼盘', '地址', '户型', "其他", '价格', '单价'])
for area in xinfang_area:
    n = 1
    while True:
        # headers = make_headers()
        if n == 1:
            new_url = f"{url}/{area}"
        else:
            new_url = f"{url}/{area}/p{n}"
        print(new_url)
        res = requests.get(new_url, headers=headers).text
        content = BeautifulSoup(res, "html.parser")
        if content is None:  # 重试
            n = 1
            print("正在重试")
            continue

        # 当前页和尾页判断
        next_page = content.find('span', attrs={'class': 'next-page stat-disable'})
        # 解析数据
        print(area, f"第{n}页数据")
        m = 0
        data = content.find_all('div', attrs={'class': 'item-mod'})
        for d in data:
            lp_name = d.find_next("a", attrs={"class": "lp-name"}).text
            address = d.find_next("a", attrs={"class": "address"}).text
            huxing = d.find_next("a", attrs={"class": "huxing"}).text
            tags = d.find_next("a", attrs={"class": "tags-wrap"}).text
            prices = d.find_next("a", attrs={"class": "favor-pos"}).text
            price = re.findall(r'\d+', prices)  # 具体价格
            if len(price) > 0:
                price = price[0]
            # 写入数据
            row_data = [area, lp_name, address, huxing, tags, prices, price]
            with open(file_name, 'a', encoding='utf-8') as f:
                writer = csv.writer(f)
                writer.writerow(row_data)
            m += 1
            print(area, f"第{n}页第{m}条数据")
        if next_page is not None:  # 没有下一页
            break

        n += 1
        time.sleep(2)
        new_url = None