房天下

Posted 2022-02-05 jianxiang

爬取房天下 省份 城市 小区的名字 价格 几居，这是列表 面积 行政区 是否在售 房天下的详情页面url

fang.py

import scrapy
import re
from fangtianxia.items import FangtianxiaItem
class FangSpider(scrapy.Spider):
    name = ‘fang‘
    start_urls = [‘https://www.fang.com/SoufunFamily.htm#‘]

    # 省份 城市 小区的名字 价格 几居，这是列表 面积 行政区  是否在售 房天下的详情页面url
    def parse(self, response):

        item=FangtianxiaItem()
        trs=response.xpath(‘//div[@id="c02"]//tr‘)
        for tr in trs:
            province=tr.xpath(‘./td[2]/text()‘).extract_first()
            item[‘province‘]=province
            if province==‘其他‘:
                continue
            a_list=tr.xpath(‘./td[3]/a‘)
            for a in a_list:
                city_name=a.xpath(‘./text()‘).extract_first()
                url=a.xpath(‘./@href‘).extract_first()
                url = url.split(‘.‘)[0].split(‘:‘)[1]
                #新房url
                city_url=‘https:‘+url+‘.newhouse.fang.com/house/s/‘
                item[‘city_name‘]=city_name
                item[‘city_url‘]=city_url
                yield scrapy.Request(url=city_url,callback=self.parsem,meta=‘item‘:item)
    def parsem(self,response):
        item=response.mete[‘item‘]
        li_list=response.xpath(‘//div[@class="nlcd_name"]‘)
        for a_list in li_list:
            url=a_list.xpath(‘./a/@href‘).extract_first()
            yield scrapy.Request(url=url,callback=self.get_content,meta=‘item‘:item)


            # new_url=response.url+url.split(‘/‘)[3]
    def get_content(self,response):
        item=response.meta[‘item‘]
        district_detail=response.xpath(‘//mate[@name="Description"]/@content‘).extract_first()
        yield item

# -*- coding: utf-8 -*-

# Define here the models for your scraped items
#
# See documentation in:
# https://doc.scrapy.org/en/latest/topics/items.html

import scrapy


class FangtianxiaItem(scrapy.Item):
    # define the fields for your item here like:
    # name = scrapy.Field()
    province=scrapy.Field()
    city_name=scrapy.Field()
    district_detail=scrapy.Field()

items.py

# -*- coding: utf-8 -*-

# Define here the models for your spider middleware
#
# See documentation in:
# https://doc.scrapy.org/en/latest/topics/spider-middleware.html

from scrapy import signals


class FangtianxiaSpiderMiddleware(object):
    # Not all methods need to be defined. If a method is not defined,
    # scrapy acts as if the spider middleware does not modify the
    # passed objects.

    @classmethod
    def from_crawler(cls, crawler):
        # This method is used by Scrapy to create your spiders.
        s = cls()
        crawler.signals.connect(s.spider_opened, signal=signals.spider_opened)
        return s

    def process_spider_input(self, response, spider):
        # Called for each response that goes through the spider
        # middleware and into the spider.

        # Should return None or raise an exception.
        return None

    def process_spider_output(self, response, result, spider):
        # Called with the results returned from the Spider, after
        # it has processed the response.

        # Must return an iterable of Request, dict or Item objects.
        for i in result:
            yield i

    def process_spider_exception(self, response, exception, spider):
        # Called when a spider or process_spider_input() method
        # (from other spider middleware) raises an exception.

        # Should return either None or an iterable of Response, dict
        # or Item objects.
        pass

    def process_start_requests(self, start_requests, spider):
        # Called with the start requests of the spider, and works
        # similarly to the process_spider_output() method, except
        # that it doesn’t have a response associated.

        # Must return only requests (not items).
        for r in start_requests:
            yield r

    def spider_opened(self, spider):
        spider.logger.info(‘Spider opened: %s‘ % spider.name)


class FangtianxiaDownloaderMiddleware(object):
    # Not all methods need to be defined. If a method is not defined,
    # scrapy acts as if the downloader middleware does not modify the
    # passed objects.

    @classmethod
    def from_crawler(cls, crawler):
        # This method is used by Scrapy to create your spiders.
        s = cls()
        crawler.signals.connect(s.spider_opened, signal=signals.spider_opened)
        return s

    def process_request(self, request, spider):
        # Called for each request that goes through the downloader
        # middleware.

        # Must either:
        # - return None: continue processing this request
        # - or return a Response object
        # - or return a Request object
        # - or raise IgnoreRequest: process_exception() methods of
        #   installed downloader middleware will be called
        return None

    def process_response(self, request, response, spider):
        # Called with the response returned from the downloader.

        # Must either;
        # - return a Response object
        # - return a Request object
        # - or raise IgnoreRequest
        return response

    def process_exception(self, request, exception, spider):
        # Called when a download handler or a process_request()
        # (from other downloader middleware) raises an exception.

        # Must either:
        # - return None: continue processing this exception
        # - return a Response object: stops process_exception() chain
        # - return a Request object: stops process_exception() chain
        pass

    def spider_opened(self, spider):
        spider.logger.info(‘Spider opened: %s‘ % spider.name)

middlewares.py

import pymysql
class FangtianxiaPipeline(object):
    def open_spider(self,spider):
        self.conn=pymysql.Connection(host=‘127.0.0.1‘,port=3306,password=‘123456‘,user=‘root‘,db=‘jianxiang‘)
    def process_item(self, item, spider):
        province=item[‘province‘]
        city_name=item[‘city_name‘]
        district_detail=item[‘district_detail‘]
        self.cursor=self.conn.cursor()
        sql=‘insert into fang values(%s,%s,%s)‘
        try:
            self.cursor.executemany(sql,(province,city_name,district_detail))
            self.conn.commit()
        except Exception as e:
            print(e)
            self.conn.rollback()
        return item
    def close_spider(self,spider):
        self.conn.close()

pipelines.py

# -*- coding: utf-8 -*-

# Scrapy settings for fangtianxia project
#
# For simplicity, this file contains only settings considered important or
# commonly used. You can find more settings consulting the documentation:
#
#     https://doc.scrapy.org/en/latest/topics/settings.html
#     https://doc.scrapy.org/en/latest/topics/downloader-middleware.html
#     https://doc.scrapy.org/en/latest/topics/spider-middleware.html

BOT_NAME = ‘fangtianxia‘

SPIDER_MODULES = [‘fangtianxia.spiders‘]
NEWSPIDER_MODULE = ‘fangtianxia.spiders‘


# Crawl responsibly by identifying yourself (and your website) on the user-agent
USER_AGENT = ‘Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.99 Safari/537.36‘

# Obey robots.txt rules
ROBOTSTXT_OBEY = False

# Configure maximum concurrent requests performed by Scrapy (default: 16)
#CONCURRENT_REQUESTS = 32

# Configure a delay for requests for the same website (default: 0)
# See https://doc.scrapy.org/en/latest/topics/settings.html#download-delay
# See also autothrottle settings and docs
#DOWNLOAD_DELAY = 3
# The download delay setting will honor only one of:
#CONCURRENT_REQUESTS_PER_DOMAIN = 16
#CONCURRENT_REQUESTS_PER_IP = 16

# Disable cookies (enabled by default)
#COOKIES_ENABLED = False

# Disable Telnet Console (enabled by default)
#TELNETCONSOLE_ENABLED = False

# Override the default request headers:
#DEFAULT_REQUEST_HEADERS = 
#   ‘Accept‘: ‘text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8‘,
#   ‘Accept-Language‘: ‘en‘,
#

# Enable or disable spider middlewares
# See https://doc.scrapy.org/en/latest/topics/spider-middleware.html
#SPIDER_MIDDLEWARES = 
#    ‘fangtianxia.middlewares.FangtianxiaSpiderMiddleware‘: 543,
#

# Enable or disable downloader middlewares
# See https://doc.scrapy.org/en/latest/topics/downloader-middleware.html
#DOWNLOADER_MIDDLEWARES = 
#    ‘fangtianxia.middlewares.FangtianxiaDownloaderMiddleware‘: 543,
#

# Enable or disable extensions
# See https://doc.scrapy.org/en/latest/topics/extensions.html
#EXTENSIONS = 
#    ‘scrapy.extensions.telnet.TelnetConsole‘: None,
#

# Configure item pipelines
# See https://doc.scrapy.org/en/latest/topics/item-pipeline.html
#ITEM_PIPELINES = 
#    ‘fangtianxia.pipelines.FangtianxiaPipeline‘: 300,
#

# Enable and configure the AutoThrottle extension (disabled by default)
# See https://doc.scrapy.org/en/latest/topics/autothrottle.html
#AUTOTHROTTLE_ENABLED = True
# The initial download delay
#AUTOTHROTTLE_START_DELAY = 5
# The maximum download delay to be set in case of high latencies
#AUTOTHROTTLE_MAX_DELAY = 60
# The average number of requests Scrapy should be sending in parallel to
# each remote server
#AUTOTHROTTLE_TARGET_CONCURRENCY = 1.0
# Enable showing throttling stats for every response received:
#AUTOTHROTTLE_DEBUG = False

# Enable and configure HTTP caching (disabled by default)
# See https://doc.scrapy.org/en/latest/topics/downloader-middleware.html#httpcache-middleware-settings
#HTTPCACHE_ENABLED = True
#HTTPCACHE_EXPIRATION_SECS = 0
#HTTPCACHE_DIR = ‘httpcache‘
#HTTPCACHE_IGNORE_HTTP_CODES = []
#HTTPCACHE_STORAGE = ‘scrapy.extensions.httpcache.FilesystemCacheStorage‘

settings.py