Python3 + Scrapy爬取猫眼电影排行榜

最新推荐文章于 2024-07-06 11:36:48 发布

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最新推荐文章于 2024-07-06 11:36:48 发布

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分类专栏： Pythom爬虫数据库

本文链接：https://blog.youkuaiyun.com/Mr_blueD/article/details/79470239

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本文介绍了一个针对猫眼电影排行榜的爬虫项目实现过程，包括数据抓取、解析和存储等步骤，并展示了如何使用Scrapy框架进行数据爬取，最终将数据保存到MySQL和MongoDB数据库中。

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首先抓包分析，所需的整页数据都在"main"下，再细分每一部的信息。

每一部电影的信息在"board-item-main"下。

接下来我们可以去找到目标数据并想好匹配方法了。

我们所需的四种数据就找到了，接下来可以去动手了。

一.编写Item

class MaoyanItem(scrapy.Item):

    top = scrapy.Field()
    title = scrapy.Field()
    star = scrapy.Field()
    releasetime = scrapy.Field()
    pass

二.编写Piplines

Mysql

class MycrawlPipeline(object):
    def __init__(self):
        # 连接数据库
        self.conn = pymysql.connect(host='127.0.0.1', port=3306, user='root', passwd='1likePython',
                                    db='TESTDB', charset='utf8')
        # 建立游标对象
        self.cursor.execute('truncate table Music')
        self.conn.commit()

    def process_item(self, item, spider): 
         try:
           
          self.cursor.execute("insert into Maoyan (top,title,star,releasetime) \
              VALUES (%s,%s,%s,%s)", (item['top'], item['title'], item['star'], item['releasetime']))
          self.conn.commit()
      except pymysql.Error:  
          print("Error%s,%s,%s,%s" % (item['top'], item['title'], item['star'], item['releasetime']))
return item

MongoDB

class MycrawlPipeline(object):
    def __init__(self):
        # 连接数据库
        self.client = pymongo.MongoClient(host='127.0.0.1', port=27017)
        # 建立游标对象
        self.test = self.client['TESTDB']
        self.post4 = self.test['maoyan']
    def process_item(self, item, spider):   
        data = dict(item)
        self.post4.insert(data)
        return item

三.编写Spider

import scrapy
from scrapy.selector import Selector
from scrapy.http import Request
from Mycrawl.items import MaoyanItem


class MaoyanSpider(scrapy.Spider):
    name = 'maoyan'
    # allowed_domains = ['maoyan.com']
    pagelist = [7, 6, 1, 2, 4]

    def start_requests(self):
        for i in self.pagelist:
            self.url = 'http://maoyan.com/board/{page}'.format(page=i)
        # url = 'https://movie.douban.com/top250'
            yield Request(self.url, callback=self.parse)

    def parse(self, response):
        item = MaoyanItem()
        selector = Selector(response)
        active = selector.xpath('//ul[@class="navbar"]/li/a[@class="active"]/text()').extract()
        tops = selector.xpath('//dd/i/text()').extract()
        movies = selector.xpath('//div[@class="movie-item-info"]')
        for i, content in enumerate(movies):
            title = content.xpath('p[@class="name"]/a/text()').extract()
            star = content.xpath('p[2]/text()').extract()
            releasetime = content.xpath('p[3]/text()').extract()

            item['top'] = active[-1] + '第' + tops[i]
            item['title'] = title[0]
            item['star'] = star[0].replace(' ', '').replace('\n', '')
            if releasetime:
                item['releasetime'] = releasetime[0].replace(' ', '').replace('\n', '')
            else:
                item['releasetime'] = ''
            yield item

四.结果展示