Django结合使用Scrapy爬取数据入库的方法示例

import os
import sys
sys.path.append(os.path.dirname(os.path.abspath('.')))
os.environ['DJANGO_SETTINGS_MODULE'] = 'django_12.settings'  # 项目名.settings
import django
django.setup()

# -*- coding: utf-8 -*-
import scrapy
from ABCkg.items import AbckgItem
 
class AbckgSpider(scrapy.Spider):
  name = 'abckg'  #爬虫名称
  allowed_domains = ['www.abckg.com'] # 允许爬取的范围
  start_urls = ['http://www.abckg.com/'] # 第一次请求的地址
  def parse(self, response):
    print('返回内容：{}'.format(response))
    """
    解析函数
    :param response: 响应内容
    :return:
    """
    listtile = response.xpath('//*[@id="container"]/div/div/h2/a/text()').extract()
    listurl = response.xpath('//*[@id="container"]/div/div/h2/a/@href').extract()
 
    for index in range(len(listtile)):
      item = AbckgItem()
      item['title'] = listtile[index]
      item['url'] = listurl[index]
      yield scrapy.Request(url=listurl[index],callback=self.parse_content,method='GET',dont_filter=True,meta={'item':item})
    # 获取下一页
    nextpage = response.xpath('//*[@id="container"]/div[1]/div[10]/a[last()]/@href').extract_first()
    print('即将请求:{}'.format(nextpage))
    yield scrapy.Request(url=nextpage,callback=self.parse,method='GET',dont_filter=True)
    # 获取详情页
  def parse_content(self,response):
    item = response.meta['item']
    item['content'] = response.xpath('//*[@id="post-1192"]/dd/p').extract()
    print('内容为：{}'.format(item))
    yield item

 pip install scrapy-djangoitem

from app1 import models
from scrapy_djangoitem import DjangoItem

class AbckgItem(DjangoItem):
  # define the fields for your item here like:
  # name = scrapy.Field()      # 普通scrapy爬虫写法
  # title = scrapy.Field()
  # url = scrapy.Field()
  # content = scrapy.Field()
  django_model = models.ABCkg   # 注入django项目的固定写法，必须起名为django_model =django中models.ABCkg表

import json
from pymongo import MongoClient
# 用于接收parse函数发过来的item
class AbckgPipeline(object):
  # i = 0
  def open_spider(self,spider):
    # print('打开文件')
    if spider.name == 'abckg':
      self.f = open('abckg.json',mode='w')
  def process_item(self, item, spider):
    # # print('ABC管道接收：{}'.format(item))
    # if spider.name == 'abckg':
    #   self.f.write(json.dumps(dict(item),ensure_ascii=False))
    # # elif spider.name == 'cctv':
    # #   img = requests.get(item['img'])
    # #   if img != '':
    # #     with open('图片\%d.png'%self.i,mode='wb')as f:
    # #       f.write(img.content)
    # #   self.i += 1
    item.save()
    return item  # 将item传给下一个管道执行
  def close_spider(self,spider):
    # print('关闭文件')
    self.f.close()

class ABCkg(models.Model):
  title = models.CharField(max_length=30,verbose_name='标题')
  url = models.CharField(max_length=100,verbose_name='网址')
  content = models.CharField(max_length=200,verbose_name='内容')
  class Meta:
    verbose_name_plural = '爬虫ABCkg'
  def __str__(self):
    return self.title