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文章出處：https://blog.csdn.net/sdksdk0/article/details/82381198

作者：朱培 ?????ID：sdksdk0

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本文使用scrapy框架，python3.6進行爬取，主要獲取的是攜程上河南省的景點名稱，地址，省市縣，描述，圖片地址信息等。首先通過搜索可以得到河南的網頁地址為:http://piao.ctrip.com/dest/u-_ba_d3_c4_cf/s-tickets/P1/,然后以這個頁面為起始位置開始爬取。將爬取的數據保存到mysql數據庫中。

1、創建scrapy項目

scrapy startproject ctrip

2、創建 spider,首先進入ctrip文件夾

scrapy genspider scenic “ctrip.com”

3、settings.py文件中：

BOT_NAME = 'ctrip'

SPIDER_MODULES = ['ctrip.spiders']

NEWSPIDER_MODULE = 'ctrip.spiders'

ROBOTSTXT_OBEY = False

DEFAULT_REQUEST_HEADERS = {

'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',

'Accept-Language': 'en',

}

DOWNLOADER_MIDDLEWARES = {

'ctrip.middlewares.UserAgentDownloadMiddleware': 543,

}

ITEM_PIPELINES = {

'ctrip.pipelines.DBPipeline': 300,

}

4、middlewares.py中

import random

class UserAgentDownloadMiddleware (object):

USER_AGENTS = [

"Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET CLR 2.0.50727; Media Center PC 6.0)",

"Mozilla/5.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET CLR 1.0.3705; .NET CLR 1.1.4322)",

"Mozilla/4.0 (compatible; MSIE 7.0b; Windows NT 5.2; .NET CLR 1.1.4322; .NET CLR 2.0.50727; InfoPath.2; .NET CLR 3.0.04506.30)",

"Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN) AppleWebKit/523.15 (KHTML, like Gecko, Safari/419.3) Arora/0.3 (Change: 287 c9dfb30)",

"Mozilla/5.0 (X11; U; Linux; en-US) AppleWebKit/527+ (KHTML, like Gecko, Safari/419.3) Arora/0.6",

"Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.2pre) Gecko/20070215 K-Ninja/2.1.1",

"Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9) Gecko/20080705 Firefox/3.0 Kapiko/3.0",

"Mozilla/5.0 (X11; Linux i686; U;) Gecko/20070322 Kazehakase/0.4.5"

]

def process_request(self,request,spider):

user_agent = random.choice(self.USER_AGENTS)

request.headers['User-Agent'] = user_agent

5、items.py

import scrapy

class ScenicItem(scrapy.Item):

province = scrapy.Field()

city = scrapy.Field()

county = scrapy.Field()

name = scrapy.Field()

scenic_url = scrapy.Field()

image_url = scrapy.Field()

address = scrapy.Field()

descript = scrapy.Field()

code = scrapy.Field()

6、scenic.py

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

import scrapy

import re

from ctrip.items import ScenicItem

class ScenicSpider(scrapy.Spider):

name = 'scenic'

allowed_domains = ['ctrip.com']

start_urls = ['http://piao.ctrip.com/dest/u-_ba_d3_c4_cf/s-tickets/P1/']

count = 0

def parse(self, response):

trs = response.xpath("//div[@id='searchResultContainer']//div[@class='searchresult_product04']")

for tr in trs:

ctrip_url = tr.xpath(".//div[1]/a/@href").get()

c1_url = ctrip_url.split("t/t")

scemic_num = c1_url[1].split(".")

scemic_num = scemic_num[0]

scenic_url = ""

image_url = tr.xpath(".//div[1]/a/img/@src").get()

address = tr.xpath(".//div[1]/div[@class='adress']//text()").get().strip()

address = re.sub(r"地址：", "", address)

descript = tr.xpath(".//div[1]/div[@class='exercise']//text()").get().strip()

descript = re.sub(r"特色：", "", descript)

name = tr.xpath(".//div[1]//h2/a/text()").get().strip()

cityinfo=address

province = "河南省"

city = ""

county = ""

if "省" in cityinfo:

matchObj = re.match(r'(.*)[?省](.+?)市(.+?)([縣]|[區])', cityinfo, re.M | re.I)

if matchObj:

province = matchObj.group(1) + "省"

city = matchObj.group(2) + "市"

if "縣" in cityinfo:

county = matchObj.group(3) + "縣"

else:

county = matchObj.group(3) + "區"

else:

matchObj2 = re.match(r'(.*)[?省](.+?)市(.+?)市', cityinfo, re.M | re.I)

matchObj1 = re.match(r'(.*)[?省](.+?)市', cityinfo, re.M | re.I)

if matchObj2:

city = matchObj2.group(2) + "市"

county = matchObj2.group(3) + "市"

elif matchObj1:

city = matchObj1.group(2) + "市"

else:

matchObj1 = re.match(r'(.*)[?省](.+?)([縣]|[區])', cityinfo, re.M | re.I)

if matchObj1:

if "縣" in cityinfo:

county = matchObj1.group(2) + "縣"

else:

county = matchObj1.group(2) + "區"

else:

matchObj = re.match(r'(.+?)市(.+?)([縣]|[區])', cityinfo, re.M | re.I)

if matchObj:

city = matchObj.group(1) + "市"

if "縣" in cityinfo:

county = matchObj.group(2) + "縣"

else:

county = matchObj.group(2) + "區"

else:

matchObj = re.match(r'(.+?)市', cityinfo, re.M | re.I)

if matchObj:

city = matchObj.group(1) + "市"

else:

matchObj = re.match(r'(.+?)縣', cityinfo, re.M | re.I)

if matchObj:

county = matchObj.group(1) + "縣"

self.count += 1

code = "A" + str(self.count)

item = ScenicItem(name=name,province=province,city=city,county=county,address=address,descript=descript,

scenic_url=scenic_url,image_url=image_url,code=code)

yield item

next_url = response.xpath('//*[@id="searchResultContainer"]/div[11]/a[11]/@href').get()

if next_url:

yield scrapy.Request(url=response.urljoin(next_url), callback=self.parse,meta={})

7、pipelines.py,將數據保存到mysql數據庫中

import pymysql

# 用于數據庫存儲

class DBPipeline(object):

def __init__(self):

# 連接數據庫

self.connect = pymysql.connect(

host='localhost',

port=3306,

db='edu_demo',

user='root',

passwd='123456',

charset='utf8',

use_unicode=True)

# 通過cursor執行增刪查改

self.cursor = self.connect.cursor();

def process_item(self, item, spider):

try:

# 查重處理

self.cursor.execute(

"""select * from a_scenic where ctrip_url = %s""",

item['scenic_url'])

# 是否有重復數據

repetition = self.cursor.fetchone()

# 重復

if repetition:

pass

else:

# 插入數據

self.cursor.execute(

"""insert into a_scenic(code,province, city, county, name ,description, ctrip_url,image_url,address,type)

value (%s,%s, %s, %s, %s, %s, %s, %s, %s, %s)""",

(item['code'],

item['province'],

item['city'],

item['county'],

item['name'],

item['descript'],

item['scenic_url'],

item['image_url'],

item['address'], '1'))

# 提交sql語句

self.connect.commit()

except Exception as error:

# 出現錯誤時打印錯誤日志

print(error)

return item

8、start.py

from scrapy import cmdline

cmdline.execute("scrapy crawl scenic".split())

9、運行start.py即可